ProSnippets GeometryEngine
Language: C#
Subject: GeometryEngine
Contributor: ArcGIS Pro SDK Team <[email protected]>
Organization: esri, http://www.esri.com
Date: 10/22/2024
ArcGIS Pro: 3.4
Visual Studio: 2022
.NET Target Framework: .Net 8
// Use acceleration to speed up relational operations. Accelerate your source geometry only if you are going to test many other geometries against it.
// Acceleration is applicable for polylines and polygons only. Note that accelerated geometries take more memory so if you aren't going to get any
// benefit from accelerating it, don't do it.
// The performance of the following GeometryEngine functions are the only ones which can be improved with an accelerated geometry.
// GeometryEngine.Instance.Contains
// GeometryEngine.Instance.Crosses
// GeometryEngine.Instance.Disjoint
// GeometryEngine.Instance.Disjoint3D
// GeometryEngine.Instance.Equals
// GeometryEngine.Instance.Intersects
// GeometryEngine.Instance.Relate
// GeometryEngine.Instance.Touches
// GeometryEngine.Instance.Within
// methods need to run on the MCT
ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
{
// accelerate the geometry to test
var acceleratedPoly = GeometryEngine.Instance.AccelerateForRelationalOperations(polygon);
// loop through all the geometries to test against
foreach (var testPolygon in testPolygons)
{
bool contains = GeometryEngine.Instance.Contains(acceleratedPoly, testPolygon);
bool within = GeometryEngine.Instance.Within(acceleratedPoly, testPolygon);
bool crosses = GeometryEngine.Instance.Crosses(acceleratedPoly, testPolygon);
}
});var g1 = PolygonBuilderEx.FromJson("{\"rings\": [ [ [0, 0], [10, 0], [10, 10], [0, 10] ] ] }");
double d = GeometryEngine.Instance.Area(g1);
// d = -100.0 //negative due to wrong ring orientation
d = GeometryEngine.Instance.Area(GeometryEngine.Instance.SimplifyAsFeature(g1));
// d = 100.0 // feature has been simplifed; ring orientation is correct// create a donut polygon. Must use the PolygonBuilderEx object
List<Coordinate2D> outerPts = new List<Coordinate2D>();
outerPts.Add(new Coordinate2D(10.0, 10.0));
outerPts.Add(new Coordinate2D(10.0, 20.0));
outerPts.Add(new Coordinate2D(20.0, 20.0));
outerPts.Add(new Coordinate2D(20.0, 10.0));
List<Coordinate2D> innerPts = new List<Coordinate2D>();
innerPts.Add(new Coordinate2D(13.0, 13.0));
innerPts.Add(new Coordinate2D(17.0, 13.0));
innerPts.Add(new Coordinate2D(17.0, 17.0));
innerPts.Add(new Coordinate2D(13.0, 17.0));
Polygon donut = null;
// add the outer points
PolygonBuilderEx pb = new PolygonBuilderEx(outerPts);
// add the inner points (note they are defined anticlockwise)
pb.AddPart(innerPts);
// get the polygon
donut = pb.ToGeometry();
// get the boundary
Geometry g = GeometryEngine.Instance.Boundary(donut);
Polyline boundary = g as Polyline;// buffer a point
MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84);
Geometry ptBuffer = GeometryEngine.Instance.Buffer(pt, 5.0);
Polygon buffer = ptBuffer as Polygon;// create the circular arc
MapPoint fromPt = MapPointBuilderEx.CreateMapPoint(2, 1);
MapPoint toPt = MapPointBuilderEx.CreateMapPoint(1, 2);
Coordinate2D interiorPt = new Coordinate2D(1 + Math.Sqrt(2) / 2, 1 + Math.Sqrt(2) / 2);
EllipticArcSegment circularArc = EllipticArcBuilderEx.CreateCircularArc(fromPt, toPt, interiorPt);
// buffer the arc
Polyline polyline = PolylineBuilderEx.CreatePolyline(circularArc);
Geometry lineBuffer = GeometryEngine.Instance.Buffer(polyline, 10);// creates a buffer around each MapPoint
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
Geometry ptsBuffer = GeometryEngine.Instance.Buffer(pts, 0.25);
Polygon bufferResult = ptsBuffer as Polygon; // bufferResult will have 4 partsList<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(1, 2), new Coordinate2D(3, 4), new Coordinate2D(4, 2),
new Coordinate2D(5, 6), new Coordinate2D(7, 8), new Coordinate2D(8, 4),
new Coordinate2D(9, 10), new Coordinate2D(11, 12), new Coordinate2D(12, 8),
new Coordinate2D(10, 8), new Coordinate2D(12, 12), new Coordinate2D(14, 10)
};
List<Geometry> manyGeometries = new List<Geometry>
{
MapPointBuilderEx.CreateMapPoint(coords[9]),
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[0], coords[1], coords[2]}, SpatialReferences.WGS84),
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[3], coords[4], coords[5]}),
PolygonBuilderEx.CreatePolygon(new List<Coordinate2D>(){coords[6], coords[7], coords[8]})
};
Geometry manyGeomBuffer = GeometryEngine.Instance.Buffer(manyGeometries, 0.25);List<Coordinate3D> coords2 = new List<Coordinate3D>()
{
new Coordinate3D(0, 0, 0),
new Coordinate3D(0, 1000, double.NaN),
new Coordinate3D(1000, 1000, 50),
new Coordinate3D(1000, 1000, 76),
new Coordinate3D(0, 1000, double.NaN),
new Coordinate3D(0, 0, 0)
};
SpatialReference sr = SpatialReferences.WebMercator;
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords2, sr);
// polyline.HasZ = true
// polyline.Points[1].HasZ = true
// polyline.Points[1].Z = NaN
// polyline.Points[4].HasZ = true
// polyline.Points[4].Z = NaN
Polyline polylineNoNaNZs = GeometryEngine.Instance.CalculateNonSimpleZs(polyline, 0) as Polyline;
// polylineNoNaNZs.Points[1].HasZ = true
// polylineNoNaNZs.Points[1].Z = 25 (halfway between 0 and 50)
// polylineNoNaNZs.Points[4].HasZ = true
// polylineNoNaNZs.Points[4].Z = 38 (halfway between 76 and 0)List<MapPoint> coords = new List<MapPoint>()
{
MapPointBuilderEx.CreateMapPoint(0, 0, 0, 0),
MapPointBuilderEx.CreateMapPoint(0, 1000),
MapPointBuilderEx.CreateMapPoint(1000, 1000, 10, 50)
};
SpatialReference sr = SpatialReferences.WebMercator;
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords, sr);
// polygon.HasM = true
// polygon.Points[1].HasM = true
// polygon.Points[1].M = NaN
Polygon polygonNoNaNMs = GeometryEngine.Instance.CalculateNonSimpleMs(polygon, 0) as Polygon;
// polygonNoNaNMs.Points[1].HasM = true
// polygonNoNaNMs.Points[1].M = 25 (halfway between 0 and 50)Envelope env = EnvelopeBuilderEx.CreateEnvelope(1.0, 1.0, 5.0, 5.0);
Envelope centered = GeometryEngine.Instance.CenterAt(env, 2.0, 2.0);
// centered.Center.X = 2.0
// centered.Center.Y = 2.0
// centered.XMin = 0
// centered.YMin = 0
// centered.XMax = 4
// centered.YMax = 4
centered = env.CenterAt(4.0, 3.0);
// centered.Center.X == 4.0
// centered.Center.Y == 3.0
// centered.XMin == 2.0
// centered.YMin == 1.0
// centered.XMax == 6.0
// centered.YMax == 5.0// simple polygon
List<Coordinate2D> list2D = new List<Coordinate2D>();
list2D.Add(new Coordinate2D(0, 0));
list2D.Add(new Coordinate2D(0, 2));
list2D.Add(new Coordinate2D(2, 2));
list2D.Add(new Coordinate2D(2, 0));
Polygon polygon = PolygonBuilderEx.CreatePolygon(list2D, SpatialReferences.WGS84);
// verify it is simple
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polygon);
// find the centroid
MapPoint centroid = GeometryEngine.Instance.Centroid(polygon);
// centroid.X = 1
// centroid.Y = 1
// map Point
MapPoint pt1 = MapPointBuilderEx.CreateMapPoint(1, 2, 3, 4, SpatialReferences.WGS84);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(5, 2, double.NaN, 7);
// pt1.HasZ = true
// pt1.HasM = true
centroid = GeometryEngine.Instance.Centroid(pt1);
// centroid.HasZ = true
// centroid.HasM = true
// pt1.IsEqual(centroid) = true
// multipoint
List<MapPoint> list = new List<MapPoint>() { pt1, pt2 };
Multipoint multipoint = MultipointBuilderEx.CreateMultipoint(list);
// multipoint.HasZ = true
// multipoint.HasM = true
centroid = GeometryEngine.Instance.Centroid(multipoint);
// centroid.X = 3
// centroid.Y = 2
// centroid.HasZ = false
// centroid.HasM = false// clip a polyline by an envelope
Envelope env = EnvelopeBuilderEx.CreateEnvelope(2.0, 2.0, 4.0, 4.0);
LineSegment line = LineBuilderEx.CreateLineSegment(new Coordinate2D(0, 3), new Coordinate2D(5.0, 3.0));
Polyline polyline = PolylineBuilderEx.CreatePolyline(line);
Geometry clipGeom = GeometryEngine.Instance.Clip(polyline, env);// clip a polyline by a polygon
List<Coordinate2D> list = new List<Coordinate2D>();
list.Add(new Coordinate2D(1.0, 1.0));
list.Add(new Coordinate2D(1.0, 4.0));
list.Add(new Coordinate2D(4.0, 4.0));
list.Add(new Coordinate2D(4.0, 1.0));
Polygon polygon = PolygonBuilderEx.CreatePolygon(list, SpatialReferences.WGS84);
LineSegment crossingLine = LineBuilderEx.CreateLineSegment(MapPointBuilderEx.CreateMapPoint(0, 3), MapPointBuilderEx.CreateMapPoint(5.0, 3.0));
Polyline p = PolylineBuilderEx.CreatePolyline(crossingLine);
Geometry geometry = GeometryEngine.Instance.Clip(p, polygon.Extent);var sr = SpatialReferenceBuilder.CreateSpatialReference(4326);
var mapPoint = MapPointBuilderEx.CreateMapPoint(15, 60, sr);
// calculate
var polylineGeodetic = GeometryEngine.Instance.ConstructGeodeticLineFromDistance(GeodeticCurveType.Loxodrome, mapPoint, 5000000, 45, null, CurveDensifyMethod.ByLength, 300000);var sr = SpatialReferenceBuilder.CreateSpatialReference(4326);
var pt1 = MapPointBuilderEx.CreateMapPoint(60, 180, sr);
var pt2 = MapPointBuilderEx.CreateMapPoint(60, 0, sr);
// densify by length
var gl = GeometryEngine.Instance.ConstructGeodeticLineFromPoints(GeodeticCurveType.Geodesic, pt1, pt2, null, CurveDensifyMethod.ByLength, -3.356);
// densify by deviation
gl = GeometryEngine.Instance.ConstructGeodeticLineFromPoints(GeodeticCurveType.Geodesic, pt1, pt2, null, CurveDensifyMethod.ByDeviation, -0.0026);MapPoint inPoint = MapPointBuilderEx.CreateMapPoint(3, 4);
double angle = 0;
double distance = 10;
MapPoint outPoint = GeometryEngine.Instance.ConstructPointFromAngleDistance(inPoint, angle, distance);
// outPoint.X = 13
// outPoint.Y = 4
SpatialReference sr = SpatialReferences.WGS84;
inPoint = MapPointBuilderEx.CreateMapPoint(0, 0, sr);
angle = Math.PI;
distance = 1;
outPoint = GeometryEngine.Instance.ConstructPointFromAngleDistance(inPoint, angle, distance, sr);
// outPoint.X = -1
// outPoint.Y = 0List<Coordinate2D> firstLinePts = new List<Coordinate2D>();
firstLinePts.Add(new Coordinate2D(1.0, 1.0));
firstLinePts.Add(new Coordinate2D(1.0, 4.0));
List<Coordinate2D> secondLinePts = new List<Coordinate2D>();
secondLinePts.Add(new Coordinate2D(4.0, 4.0));
secondLinePts.Add(new Coordinate2D(4.0, 1.0));
List<Coordinate2D> thirdLinePts = new List<Coordinate2D>();
thirdLinePts.Add(new Coordinate2D(0.0, 2.0));
thirdLinePts.Add(new Coordinate2D(5.0, 2.0));
List<Coordinate2D> fourthLinePts = new List<Coordinate2D>();
fourthLinePts.Add(new Coordinate2D(0.0, 3.0));
fourthLinePts.Add(new Coordinate2D(5.0, 3.0));
// build the polylines
List<Polyline> polylines = new List<Polyline>();
polylines.Add(PolylineBuilderEx.CreatePolyline(firstLinePts));
polylines.Add(PolylineBuilderEx.CreatePolyline(secondLinePts));
polylines.Add(PolylineBuilderEx.CreatePolyline(thirdLinePts));
polylines.Add(PolylineBuilderEx.CreatePolyline(fourthLinePts));
// construct polygons from the polylines
var polygons = GeometryEngine.Instance.ConstructPolygonsFromPolylines(polylines);
// polygons.Count = 1
// polygon coordinates are (1.0, 2.0), (1.0, 3.0), (4.0, 3.0), (4.0, 2.0)// build a polygon
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
Polygon poly = PolygonBuilderEx.CreatePolygon(pts);
// test if an inner point is contained
MapPoint innerPt = MapPointBuilderEx.CreateMapPoint(1.5, 1.5);
bool contains = GeometryEngine.Instance.Contains(poly, innerPt); // contains = true
// test a point on a boundary
contains = GeometryEngine.Instance.Contains(poly, poly.Points[0]); // contains = false
// test an interior line
MapPoint innerPt2 = MapPointBuilderEx.CreateMapPoint(1.25, 1.75);
List<MapPoint> innerLinePts = new List<MapPoint>();
innerLinePts.Add(innerPt);
innerLinePts.Add(innerPt2);
// test an inner polyline
Polyline polyline = PolylineBuilderEx.CreatePolyline(innerLinePts);
contains = GeometryEngine.Instance.Contains(poly, polyline); // contains = true
// test a line that crosses the boundary
MapPoint outerPt = MapPointBuilderEx.CreateMapPoint(3, 1.5);
List<MapPoint> crossingLinePts = new List<MapPoint>();
crossingLinePts.Add(innerPt);
crossingLinePts.Add(outerPt);
polyline = PolylineBuilderEx.CreatePolyline(crossingLinePts);
contains = GeometryEngine.Instance.Contains(poly, polyline); // contains = false
// test a polygon in polygon
Envelope env = EnvelopeBuilderEx.CreateEnvelope(innerPt, innerPt2);
contains = GeometryEngine.Instance.Contains(poly, env); // contains = true//
// convex hull around a point - returns a point
//
MapPoint pt = MapPointBuilderEx.CreateMapPoint(2.0, 2.0);
Geometry hull = GeometryEngine.Instance.ConvexHull(pt);
MapPoint hullPt = hull as MapPoint;
// nullPt.X = 2
// hullPt.Y = 2
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0));
list.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0));
list.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
//
// convex hull around a multipoint - returns a polygon
//
// build a multiPoint
Multipoint multiPoint = MultipointBuilderEx.CreateMultipoint(list);
hull = GeometryEngine.Instance.ConvexHull(multiPoint);
Polygon hullPoly = hull as Polygon;
// hullPoly.Area = 1
// hullPoly.PointCount = 5
//
// convex hull around a line - returns a polyline or polygon
//
List<MapPoint> polylineList = new List<MapPoint>();
polylineList.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
polylineList.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0));
// 2 point straight line
Polyline polyline = PolylineBuilderEx.CreatePolyline(polylineList);
hull = GeometryEngine.Instance.ConvexHull(polyline);
Polyline hullPolyline = hull as Polyline;
// hullPolyline.Length = Math.Sqrt(2)
// hullPolyline.PointCount = 2
// 3 point angular line
polylineList.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
polyline = PolylineBuilderEx.CreatePolyline(polylineList);
hull = GeometryEngine.Instance.ConvexHull(polyline);
hullPoly = hull as Polygon;
// hullPoly.Length = 2 + Math.Sqrt(2)
// hullPoly.Area = 0.5
// hullPoly.PointCount = 4
//
// convex hull around a polygon - returns a polygon
//
// simple polygon
Polygon poly = PolygonBuilderEx.CreatePolygon(list);
hull = GeometryEngine.Instance.ConvexHull(poly);
hullPoly = hull as Polygon;
// hullPoly.Length = 4.0
// hullPoly.Area = 1.0
// hullPoly.PointCount = 5
// polygon with concave angles
List<MapPoint> funkyList = new List<MapPoint>();
funkyList.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
funkyList.Add(MapPointBuilderEx.CreateMapPoint(1.5, 1.5));
funkyList.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0));
funkyList.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0));
funkyList.Add(MapPointBuilderEx.CreateMapPoint(1.5, 1.5));
funkyList.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
funkyList.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
Polygon funkyPoly = PolygonBuilderEx.CreatePolygon(funkyList);
hull = GeometryEngine.Instance.ConvexHull(funkyPoly);
hullPoly = hull as Polygon;
// hullPoly.Length = 4.0
// hullPoly.Area = 1.0
// hullPoly.PointCount = 5
// hullPoly.Points[0] = 1.0, 1.0
// hullPoly.Points[1] = 1.0, 2.0
// hullPoly.Points[2] = 2.0, 2.0
// hullPoly.Points[3] = 2.0, 1.0
// hullPoly.Points[4] = 1.0, 1.0//
// pt on pt
//
MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2.0, 2.0);
bool crosses = GeometryEngine.Instance.Crosses(pt, pt2); // crosses = false
crosses = GeometryEngine.Instance.Crosses(pt, pt); // crosses = false
//
// pt and line
//
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
list.Add(MapPointBuilderEx.CreateMapPoint(3.0, 3.0));
list.Add(MapPointBuilderEx.CreateMapPoint(5.0, 1.0));
Polyline line1 = PolylineBuilderEx.CreatePolyline(list);
crosses = GeometryEngine.Instance.Crosses(line1, pt2); // crosses = false
crosses = GeometryEngine.Instance.Crosses(pt2, line1); // crosses = false
// end pt of line
crosses = GeometryEngine.Instance.Crosses(line1, pt); // crosses = false
//
// pt and polygon
//
List<MapPoint> polyPts = new List<MapPoint>();
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 2.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 2.0));
Polygon poly1 = PolygonBuilderEx.CreatePolygon(polyPts);
crosses = GeometryEngine.Instance.Crosses(poly1, pt); // crosses = false
crosses = GeometryEngine.Instance.Crosses(pt, poly1); // crosses = false
//
// line and line
//
List<MapPoint> list2 = new List<MapPoint>();
list2.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(5.0, 3.0));
Polyline line2 = PolylineBuilderEx.CreatePolyline(list2);
crosses = GeometryEngine.Instance.Crosses(line1, line2); // crosses = true
//
// line and polygon
//
crosses = GeometryEngine.Instance.Crosses(poly1, line1); // crosses = true
//
// polygon and polygon
//
Envelope env = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(1.0, 1.0), MapPointBuilderEx.CreateMapPoint(4, 4));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env);
crosses = GeometryEngine.Instance.Crosses(poly1, poly2); // crosses = falseSpatialReference sr = SpatialReferences.WGS84;
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, sr));
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 4.0, sr));
list.Add(MapPointBuilderEx.CreateMapPoint(4.0, 4.0, sr));
list.Add(MapPointBuilderEx.CreateMapPoint(4.0, 1.0, sr));
List<Geometry> cutGeometries;
LineSegment line = LineBuilderEx.CreateLineSegment(MapPointBuilderEx.CreateMapPoint(0, 0, sr), MapPointBuilderEx.CreateMapPoint(3, 6, sr));
Polyline cutter = PolylineBuilderEx.CreatePolyline(line);
// polyline
Polyline polyline = PolylineBuilderEx.CreatePolyline(list);
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polyline);
cutGeometries = GeometryEngine.Instance.Cut(polyline, cutter) as List<Geometry>;
Polyline leftPolyline = cutGeometries[0] as Polyline;
Polyline rightPolyline = cutGeometries[1] as Polyline;
// leftPolyline.Points[0] = 1, 2
// leftPolyline.Points[1] = 1, 4
// leftPolyline.Points[2] = 2, 4
// rightPolyline.Points.Count = 5
// rightPolyline.Parts.Count = 2
ReadOnlySegmentCollection segments0 = rightPolyline.Parts[0];
// segments0[0].StartCoordinate = 1, 1
// segments0[0].EndCoordinate = 1, 2
ReadOnlySegmentCollection segments1 = rightPolyline.Parts[1];
// segments1.Count = 2
// segments1[0].StartCoordinate = 2, 4
// segments1[0].EndCoordinate = 4, 4
// segments1[1].StartCoordinate = 4, 4
// segments1[1].EndCoordinate = 4, 1
// polygon
Polygon polygon = PolygonBuilderEx.CreatePolygon(list);
isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polygon);
cutGeometries = GeometryEngine.Instance.Cut(polygon, cutter) as List<Geometry>;// densify a line segment
MapPoint startPt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0);
MapPoint endPt = MapPointBuilderEx.CreateMapPoint(1, 21);
LineSegment line = LineBuilderEx.CreateLineSegment(startPt, endPt);
Polyline polyline = PolylineBuilderEx.CreatePolyline(line);
Geometry geom = GeometryEngine.Instance.DensifyByLength(polyline, 2);
Polyline result = geom as Polyline;
// densify a circular arc
MapPoint fromPt = MapPointBuilderEx.CreateMapPoint(2, 1);
MapPoint toPt = MapPointBuilderEx.CreateMapPoint(1, 2);
Coordinate2D interiorPt = new Coordinate2D(1 + Math.Sqrt(2) / 2, 1 + Math.Sqrt(2) / 2);
EllipticArcBuilderEx cab = new EllipticArcBuilderEx(fromPt, toPt, interiorPt);
EllipticArcSegment circularArc = cab.ToSegment();
polyline = PolylineBuilderEx.CreatePolyline(circularArc);
geom = GeometryEngine.Instance.DensifyByLength(polyline, 2);
result = geom as Polyline;List<MapPoint> polyPts = new List<MapPoint>();
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 2.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 2.0));
Polygon poly1 = PolygonBuilderEx.CreatePolygon(polyPts);
Envelope env = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(1.0, 1.0), MapPointBuilderEx.CreateMapPoint(4, 4));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env);
Geometry result = GeometryEngine.Instance.Difference(poly1, poly2);
Polygon polyResult = result as Polygon;
// polyResult.Area = 10.0
result = GeometryEngine.Instance.Difference(poly2, poly1);
polyResult = result as Polygon;
// polyResult.Area = 7.0//
// pt on pt
//
MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2.0, 2.5);
bool disjoint = GeometryEngine.Instance.Disjoint(pt, pt2); // result is true
MultipointBuilderEx mpb = new MultipointBuilderEx();
mpb.AddPoint(pt);
mpb.AddPoint(pt2);
Multipoint multiPoint = mpb.ToGeometry();
disjoint = GeometryEngine.Instance.Disjoint(multiPoint, pt); // result is false
//
// pt and line
//
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
list.Add(MapPointBuilderEx.CreateMapPoint(3.0, 3.0));
list.Add(MapPointBuilderEx.CreateMapPoint(5.0, 1.0));
Polyline line1 = PolylineBuilderEx.CreatePolyline(list);
disjoint = GeometryEngine.Instance.Disjoint(line1, pt2); // result is true
disjoint = GeometryEngine.Instance.Disjoint(pt2, line1); // result is true
// end pt of line
disjoint = GeometryEngine.Instance.Disjoint(line1, pt); // result is false
//
// pt and polygon
//
List<MapPoint> polyPts = new List<MapPoint>();
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 2.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 2.0));
Polygon poly1 = PolygonBuilderEx.CreatePolygon(polyPts);
disjoint = GeometryEngine.Instance.Disjoint(poly1, pt); // result is true
disjoint = GeometryEngine.Instance.Disjoint(pt, poly1); // result is true
//
// line and line
//
List<MapPoint> list2 = new List<MapPoint>();
list2.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(5.0, 3.0));
Polyline line2 = PolylineBuilderEx.CreatePolyline(list2);
disjoint = GeometryEngine.Instance.Disjoint(line1, line2); // result is false
//
// line and polygon
//
disjoint = GeometryEngine.Instance.Disjoint(poly1, line1); // result is false
disjoint = GeometryEngine.Instance.Disjoint(line1, poly1); // result is false
//
// polygon and polygon
//
Envelope env = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(1.0, 1.0), MapPointBuilderEx.CreateMapPoint(4, 4));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env);
disjoint = GeometryEngine.Instance.Disjoint(poly1, poly2); // result is false
// disjoint3D
SpatialReference sr = SpatialReferences.WGS84;
MapPoint pt3D_1 = MapPointBuilderEx.CreateMapPoint(1, 1, 1, sr);
MapPoint pt3D_2 = MapPointBuilderEx.CreateMapPoint(2, 2, 2, sr);
MapPoint pt3D_3 = MapPointBuilderEx.CreateMapPoint(1, 1, 2, sr);
MultipointBuilderEx mpbEx = new MultipointBuilderEx();
mpbEx.AddPoint(pt3D_1);
mpbEx.AddPoint(pt3D_2);
mpbEx.HasZ = true;
multiPoint = mpbEx.ToGeometry();
disjoint = GeometryEngine.Instance.Disjoint3D(multiPoint, pt3D_2); // disjoint = false
disjoint = GeometryEngine.Instance.Disjoint3D(multiPoint, pt3D_3); // disjoint = trueMapPoint pt1 = MapPointBuilderEx.CreateMapPoint(1.0, 1.0);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2.0, 2.0);
MapPoint pt3 = MapPointBuilderEx.CreateMapPoint(4.0, 2.0);
//
// pt and pt
//
double d = GeometryEngine.Instance.Distance(pt1, pt2); // d = Math.Sqrt(2)
//
// pt and multipoint
//
List<MapPoint> multiPts = new List<MapPoint>();
multiPts.Add(pt2);
multiPts.Add(pt3);
Multipoint multiPoint = MultipointBuilderEx.CreateMultipoint(multiPts);
d = GeometryEngine.Instance.Distance(pt1, multiPoint); // d = Math.Sqrt(2)
//
// pt and envelope
//
Envelope env = EnvelopeBuilderEx.CreateEnvelope(pt1, pt2);
d = GeometryEngine.Instance.Distance(pt1, env); // d = 0
//
// pt and polyline
//
List<MapPoint> polylinePts = new List<MapPoint>();
polylinePts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
polylinePts.Add(pt2);
Polyline polyline = PolylineBuilderEx.CreatePolyline(polylinePts);
d = GeometryEngine.Instance.Distance(pt1, polyline); // d = 1.0
//
// pt and polygon
//
Envelope env2 = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(3.0, 3.0), MapPointBuilderEx.CreateMapPoint(5.0, 5.0));
Polygon poly = PolygonBuilderEx.CreatePolygon(env2);
d = GeometryEngine.Instance.Distance(pt1, poly); // d = Math.Sqrt(8)
//
// envelope and polyline
//
d = GeometryEngine.Instance.Distance(env, polyline); // d = 0
//
// polyline and polyline
//
List<MapPoint> polylineList = new List<MapPoint>();
polylineList.Add(MapPointBuilderEx.CreateMapPoint(4, 3));
polylineList.Add(MapPointBuilderEx.CreateMapPoint(4, 4));
Polyline polyline2 = PolylineBuilderEx.CreatePolyline(polylineList);
d = GeometryEngine.Instance.Distance(polyline, polyline2); // d = Math.Sqrt(5)
//
// polygon and polygon
//
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env);
d = GeometryEngine.Instance.Distance(poly, poly2); // d = Math.Sqrt(2)// between points
MapPoint pt1 = MapPointBuilderEx.CreateMapPoint(1, 1, 1);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2, 2, 2);
MapPoint pt3 = MapPointBuilderEx.CreateMapPoint(10, 2, 1);
// pt1 to pt2
double d = GeometryEngine.Instance.Distance3D(pt1, pt2); // d = Math.Sqrt(3)
// pt1 to pt3
d = GeometryEngine.Instance.Distance3D(pt1, pt3); // d = Math.Sqrt(82)
// pt2 to pt3
d = GeometryEngine.Instance.Distance3D(pt2, pt3); // d = Math.Sqrt(65)
// intersecting lines
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, 1.0));
list.Add(MapPointBuilderEx.CreateMapPoint(3.0, 3.0, 1.0));
list.Add(MapPointBuilderEx.CreateMapPoint(5.0, 1.0, 1.0));
Polyline line1 = PolylineBuilderEx.CreatePolyline(list);
List<MapPoint> list2 = new List<MapPoint>();
list2.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0, 1.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0, 1.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(5.0, 3.0, 1.0));
Polyline line2 = PolylineBuilderEx.CreatePolyline(list2);
bool intersects = GeometryEngine.Instance.Intersects(line1, line2); // intersects = true
d = GeometryEngine.Instance.Distance3D(line1, line2); // d = 0 (distance is 0 when geomtries intersect)Envelope env = EnvelopeBuilderEx.CreateEnvelope(100.0, 100.0, 500.0, 500.0);
// env.HasZ = false
Envelope result = GeometryEngine.Instance.Expand(env, 0.5, 0.5, true);
// result.Center = 300, 300
// result.XMin = 200
// result.YMin = 200
// result.XMax = 400
// result.YMax = 400
result = GeometryEngine.Instance.Expand(env, 100, 200, false);
// result.Center = 300, 300
// result.XMin = 0
// result.YMin = -100
// result.XMax = 600
// result.YMax = 700
try
{
// expand in 3 dimensions
result = GeometryEngine.Instance.Expand(env, 0.5, 0.5, 0.5, true);
}
catch (InvalidOperationException e)
{
// the geometry is not Z-Aware
}
// expand a 3d envelope
MapPoint pt1 = MapPointBuilderEx.CreateMapPoint(100, 100, 100);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(200, 200, 200);
env = EnvelopeBuilderEx.CreateEnvelope(pt1, pt2);
// env.HasZ = true
result = GeometryEngine.Instance.Expand(env, 0.5, 0.5, 0.5, true);
// result.Center = 150, 150, 150
// result.XMin = 125
// result.YMin = 125
// result.ZMin = 125
// result.XMax = 175
// result.YMax = 175
// result.ZMax = 175// build a polyline
var polyline = PolylineBuilderEx.CreatePolyline(new[]
{
MapPointBuilderEx.CreateMapPoint(1, 1, 10, 20),
MapPointBuilderEx.CreateMapPoint(0, 0, 10, 20),
MapPointBuilderEx.CreateMapPoint(1, -1, 10, 20)
});
// build the extender line
var extender = PolylineBuilderEx.CreatePolyline(new[]
{
MapPointBuilderEx.CreateMapPoint(2, 2),
MapPointBuilderEx.CreateMapPoint(2, -2),
});
// extend
var result = GeometryEngine.Instance.Extend(polyline, extender, ExtendFlags.KeepEndAttributes);
Polyline extendedLine = result as Polyline;
// result.Parts[0].Points[0] = 2, 2, 10, 20
// result.parts[0].Points[1] = 1, 1, 10, 20
// result.Parts[0].Points[2] = 0, 0, 10, 20
// result.Parts[0].Points[3] = 1, -1, 10, 20
// result.Parts[0].Points[4] = 2, -2, 10, 20
// change the flags
result = GeometryEngine.Instance.Extend(polyline, extender, ExtendFlags.NoEndAttributes);
extendedLine = result as Polyline;
// result.Parts[0].Points[0] = 2, 2, 0
// result.parts[0].Points[1] = 1, 1, 10, 20
// result.Parts[0].Points[2] = 0, 0, 10, 20
// result.Parts[0].Points[3] = 1, -1, 10, 20
// result.Parts[0].Points[4] = 2, -2, 0
// extend
result = GeometryEngine.Instance.Extend(polyline, extender, ExtendFlags.KeepEndAttributes | ExtendFlags.NoExtendAtTo);
extendedLine = result as Polyline;
// result.Parts[0].Points[0] = 2, 2, 10, 20
// result.parts[0].Points[1] = 1, 1, 10, 20
// result.Parts[0].Points[2] = 0, 0, 10, 20
// result.Parts[0].Points[3] = 1, -1, 10, 20
// extend with no intersection
polyline = PolylineBuilderEx.CreatePolyline(new[]
{
MapPointBuilderEx.CreateMapPoint(1, 1),
MapPointBuilderEx.CreateMapPoint(3, 1)
});
extender = PolylineBuilderEx.CreatePolyline(new[]
{
MapPointBuilderEx.CreateMapPoint(1, 4),
MapPointBuilderEx.CreateMapPoint(3, 4)
});
result = GeometryEngine.Instance.Extend(polyline, extender, ExtendFlags.Default);
// result = nullPolyline generalizedPolyline = GeometryEngine.Instance.Generalize(polylineWithZ, 200) as Polyline;
// generalizedPolyline.HasZ = true
Polygon generalized3DPolyline = GeometryEngine.Instance.Generalize3D(polylineWithZ, 200) as Polygon;
// generalized3DPolyline.HasZ = true
// note that generalized3DPolyline and generalizedPolyline will have different definitions
// ie generalizedPolyline.IsEqual(generalized3DPolyline) = falsevar polygon = PolygonBuilderEx.CreatePolygon(new[]
{
MapPointBuilderEx.CreateMapPoint(-10018754.1713946, 10018754.1713946),
MapPointBuilderEx.CreateMapPoint(10018754.1713946, 10018754.1713946),
MapPointBuilderEx.CreateMapPoint(10018754.1713946, -10018754.1713946),
MapPointBuilderEx.CreateMapPoint(-10018754.1713946, -10018754.1713946)
}, SpatialReferences.WebMercator);
var area = GeometryEngine.Instance.GeodesicArea(polygon);
// area is close to 255032810857732.31
area = GeometryEngine.Instance.GeodesicArea(polygon, AreaUnit.SquareKilometers);
// area is close to 255032810.85953, // buffer a point
MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84);
Polygon outPolygon = GeometryEngine.Instance.GeodesicBuffer(pt, 5) as Polygon;
double delta = SpatialReferences.WGS84.XYTolerance * 2 * Math.Sqrt(2);
ReadOnlyPointCollection points = outPolygon.Points;
foreach (MapPoint p in points)
{
double d = GeometryEngine.Instance.GeodesicDistance(pt, p);
// d = 5 (+- delta)
}
// specify a unit for the distance
outPolygon = GeometryEngine.Instance.GeodesicBuffer(pt, 5000, LinearUnit.Millimeters) as Polygon;
// buffer of 0 distance produces an empty geometry
Geometry g = GeometryEngine.Instance.GeodesicBuffer(pt, 0);
// g.IsEmpty = true
// buffer many points
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84));
list.Add(MapPointBuilderEx.CreateMapPoint(10.0, 20.0));
list.Add(MapPointBuilderEx.CreateMapPoint(40.0, 40.0));
list.Add(MapPointBuilderEx.CreateMapPoint(60.0, 60.0));
outPolygon = GeometryEngine.Instance.GeodesicBuffer(list, 10000) as Polygon;
// outPolygon.PartCount = 4
// buffer different geometry types
List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(1, 2), new Coordinate2D(10, 20), new Coordinate2D(20, 30),
new Coordinate2D(50, 60), new Coordinate2D(70, 80), new Coordinate2D(80, 40),
new Coordinate2D(90, 10), new Coordinate2D(110, 15), new Coordinate2D(120, 30),
new Coordinate2D(10, 40), new Coordinate2D(-10, 40), new Coordinate2D(-10, 50)
};
List<Geometry> manyGeometries = new List<Geometry>
{
MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84),
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[0], coords[1], coords[2]}, SpatialReferences.WGS84),
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[3], coords[4], coords[5]}),
PolygonBuilderEx.CreatePolygon(new List<Coordinate2D>(){coords[9], coords[10], coords[11]})
};
outPolygon = GeometryEngine.Instance.GeodesicBuffer(manyGeometries, 20000) as Polygon;
// specify unit types
outPolygon = GeometryEngine.Instance.GeodesicBuffer(manyGeometries, 20, LinearUnit.Miles) as Polygon;
var point1 = MapPointBuilderEx.CreateMapPoint(-170, 45, SpatialReferences.WGS84);
var point2 = MapPointBuilderEx.CreateMapPoint(170, 45, SpatialReferences.WGS84);
var distances_meters = GeometryEngine.Instance.GeodesicDistance(point1, point2);
// distance is approximately 1572912.2066940258 in meters
var distance_feet = GeometryEngine.Instance.GeodesicDistance(point1, point2, LinearUnit.Feet);
// distance is approximately 5160473.11904786 in feetGeodesicEllipseParameter param = new GeodesicEllipseParameter();
param.AxisDirection = 4 * Math.PI / 3;
param.Center = new Coordinate2D(-120, 60);
param.LinearUnit = LinearUnit.Meters;
param.OutGeometryType = GeometryType.Polyline;
param.SemiAxis1Length = 6500000;
param.SemiAxis2Length = 1500000;
param.VertexCount = 800;
Geometry geometry = GeometryEngine.Instance.GeodesicEllipse(param, SpatialReferences.WGS84);
// geometry.IsEmpty = false
Polyline polyline = geometry as Polyline;
// polyline.PointCount = 801
// polyline.PartCount = 1var polyline = PolylineBuilderEx.CreatePolyline(new[]
{
MapPointBuilderEx.CreateMapPoint(-10018754.1713946, 10018754.1713946),
MapPointBuilderEx.CreateMapPoint(10018754.1713946, 10018754.1713946)
}, SpatialReferences.WebMercator);
var length = GeometryEngine.Instance.GeodesicLength(polyline);
// length is approx 5243784.5551844323 in meters
length = GeometryEngine.Instance.GeodesicLength(polyline, LinearUnit.Miles);
// length is approx 3258.33666089067 in miles
var polyline2 = GeometryEngine.Instance.Project(polyline, SpatialReferences.WGS84);
length = GeometryEngine.Instance.GeodesicLength(polyline2);
// length is approx 5243784.55518443 in meters after projectingGeodesicSectorParameter param = new GeodesicSectorParameter();
param.ArcVertexCount = 50;
param.AxisDirection = Math.PI / 4;
param.Center = new Coordinate2D(0, 0);
param.LinearUnit = LinearUnit.Meters;
param.OutGeometryType = GeometryType.Polygon;
param.RadiusVertexCount = 10;
param.SectorAngle = 5 * Math.PI / 3;
param.SemiAxis1Length = 100000;
param.SemiAxis2Length = 20000;
param.StartDirection = 11 * Math.PI / 6;
Geometry geometry = GeometryEngine.Instance.GeodesicSector(param, SpatialReferences.WGS84);
// geometry.IsEmpty = false
Polygon polygon = geometry as Polygon;
// polygon.PointCount = 68
// polygon.PartCount = 1List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(-80, 0),
new Coordinate2D(-20, 60),
new Coordinate2D(40, 20),
new Coordinate2D(0, -20),
new Coordinate2D(-80, 0)
};
SpatialReference sr = SpatialReferences.WGS84;
// create a polyline
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
// densify in km
Polyline geodesicPolyline = GeometryEngine.Instance.GeodeticDensifyByDeviation(polyline, 200, LinearUnit.Kilometers, GeodeticCurveType.Geodesic) as Polyline;
// densify in m
geodesicPolyline = GeometryEngine.Instance.GeodeticDensifyByDeviation(polyline, 200, LinearUnit.Meters, GeodeticCurveType.Geodesic) as Polyline;
// Change curve type to Loxodrome
Polyline loxodromePolyline = GeometryEngine.Instance.GeodeticDensifyByDeviation(polyline, 200, LinearUnit.Meters, GeodeticCurveType.Loxodrome) as Polyline;List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(-80, 0),
new Coordinate2D(-20, 60),
new Coordinate2D(40, 20),
new Coordinate2D(0, -20),
new Coordinate2D(-80, 0)
};
SpatialReference sr = SpatialReferences.WGS84;
// create a polygon
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords, sr);
// get the geodesic lengths of the polygon segments
ReadOnlySegmentCollection segments = polygon.Parts[0];
List<Double> geoLengths = new List<Double>(segments.Count);
foreach (Segment s in segments)
{
Polyline line = PolylineBuilderEx.CreatePolyline(s, sr);
double geoLen = GeometryEngine.Instance.GeodesicLength(line);
geoLengths.Add(geoLen);
}
// find the max length
geoLengths.Sort();
double maxLen = geoLengths[geoLengths.Count - 1];
// densify the polygon (in meters)
Polygon densifiedPoly = GeometryEngine.Instance.GeodeticDensifyByLength(polygon, maxLen, LinearUnit.Meters, GeodeticCurveType.Geodesic) as Polygon;
// densify the polygon (in km)
double maxSegmentLength = maxLen / 10000;
densifiedPoly = GeometryEngine.Instance.GeodeticDensifyByLength(polygon, maxSegmentLength, LinearUnit.Kilometers, GeodeticCurveType.Geodesic) as Polygon;SpatialReference sr = SpatialReferences.WGS84;
MapPoint p1 = MapPointBuilderEx.CreateMapPoint(111, 55, sr);
MapPoint p2 = MapPointBuilderEx.CreateMapPoint(95.5845, 64.2285, sr);
double distance, az12, az21;
distance = GeometryEngine.Instance.GeodeticDistanceAndAzimuth(p1, p2, GeodeticCurveType.Geodesic, out az12, out az21);
// distance - 1339728.0303777338
// az12 - 326.235780421405
// az21 - 132.87425637913955
distance = GeometryEngine.Instance.GeodeticDistanceAndAzimuth(p1, p2, GeodeticCurveType.Loxodrome, out az12, out az21);
// distance - 1342745.9687172563
// az12 - 319.966400332104
// az21- 139.96640033210397
distance = GeometryEngine.Instance.GeodeticDistanceAndAzimuth(p1, p2, GeodeticCurveType.GreatElliptic, out az12, out az21);
// distance - 1339728.038837946
// az12 - 326.22479262335418
// az21 - 132.88558894347742
MapPoint p3 = MapPointBuilderEx.CreateMapPoint(0, 0, sr);
MapPoint p4 = MapPointBuilderEx.CreateMapPoint(1, 0, sr);
distance = GeometryEngine.Instance.GeodeticDistanceAndAzimuth(p3, p4, GeodeticCurveType.Geodesic, out az12, out az21);
// distance - 111319.49079327342
// az12 - 90
// az21 - 270
distance = GeometryEngine.Instance.GeodeticDistanceAndAzimuth(p3, p4, GeodeticCurveType.Geodesic, LinearUnit.Miles, out az12, out az21);
// distance - 69.1707247134693
// az12 - 90
// az21 - 270SpatialReference sr = SpatialReferences.WebMercator;
var points = new[] { MapPointBuilderEx.CreateMapPoint(0, 0, sr) };
double distance = 10;
double azimuth = Math.PI / 2;
var resultPoints = GeometryEngine.Instance.GeodeticMove(points, sr, distance, LinearUnit.Meters, azimuth, GeodeticCurveType.Geodesic);
// resultPoints.First().X = 10
// resultPoints.First().Y = 0
// resultPoints.First().SpatialReference.Wkid = sr.Wkid
// Change LinearUnit to Miles
resultPoints = GeometryEngine.Instance.GeodeticMove(points, sr, distance, LinearUnit.Miles, azimuth, GeodeticCurveType.Geodesic);
// resultPoints.First().X = 16093.44
// resultPoints.First().Y = 0
// Change curve type
resultPoints = GeometryEngine.Instance.GeodeticMove(points, sr, distance, LinearUnit.Miles, azimuth, GeodeticCurveType.Loxodrome);
// resultPoints.First().X = 16093.44
// resultPoints.First().Y = 0// get all the geographic coordinate systems
IReadOnlyList<CoordinateSystemListEntry> gcs_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.GeographicCoordinateSystem);
// get the projected coordinate systems
IReadOnlyList<CoordinateSystemListEntry> proj_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.ProjectedCoordinateSystem);
// get the vertical coordinate systems
IReadOnlyList<CoordinateSystemListEntry> vert_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.VerticalCoordinateSystem);
// get geographic and projected coordinate systems
IReadOnlyList<CoordinateSystemListEntry> combined_list = GeometryEngine.Instance.GetPredefinedCoordinateSystemList(CoordinateSystemFilter.GeographicCoordinateSystem | CoordinateSystemFilter.ProjectedCoordinateSystem);
// investigate one of the entries
CoordinateSystemListEntry entry = gcs_list[0];
int wkid = entry.Wkid;
string category = entry.Category;
string name = entry.Name;// a geographic transformation is the definition of how to project from one spatial reference to another
IReadOnlyList<GeographicTransformationListEntry> list = GeometryEngine.Instance.GetPredefinedGeographicTransformationList();
// a GeographicTransformationListEntry consists of Name, Wkid, the From SpatialReference Wkid, the To SpatialReference Wkid
GeographicTransformationListEntry entry = list[0];
int fromWkid = entry.FromSRWkid;
int toWkid = entry.ToSRWkid;
int wkid = entry.Wkid;
string name = entry.Name;SpatialReference sr = SpatialReferences.WGS84;
List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(-111, 72),
new Coordinate2D(-108, 68),
new Coordinate2D(-114, 68)
};
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
Polyline subCurve = GeometryEngine.Instance.GetSubCurve(polyline, 0, 5, AsRatioOrLength.AsLength);
// subCurve.PartCount = 1
// subCurve.PointCount = 2
ReadOnlyPointCollection points = subCurve.Points;
// points[0] = -111, 72
// points[1] = -108, 68
subCurve = GeometryEngine.Instance.GetSubCurve(polyline, 0, 0.5, AsRatioOrLength.AsRatio);
// subCurve.PointCount = 3
points = subCurve.Points;
// points[0] = -111, 72
// points[1] = -108, 68
// points[2] = -108.5, 68
List<Coordinate3D> coords3D = new List<Coordinate3D>()
{
new Coordinate3D(0, 0, 0),
new Coordinate3D(0, 1, 1),
new Coordinate3D(1, 1, 2),
new Coordinate3D(1, 0, 3)
};
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords3D, sr);
subCurve = GeometryEngine.Instance.GetSubCurve3D(polygon, 0, 1, AsRatioOrLength.AsLength);
// subCurve.HasZ = true
points = subCurve.Points;
// points.Count = 2
// points[0] = 0, 0, 0
// points[1] = 0, 0.70710678118654746, 0.70710678118654746// mitered join and butt caps
SpatialReference sr = SpatialReferenceBuilder.CreateSpatialReference(102010);
List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(1400,6200),
new Coordinate2D(1600,6300),
new Coordinate2D(1800,6200)
};
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
Polygon polygon = GeometryEngine.Instance.GraphicBuffer(polyline, 50, LineJoinType.Miter, LineCapType.Butt, 10, 0, -1) as Polygon;
// bevelled join and round caps
Envelope envelope = EnvelopeBuilderEx.CreateEnvelope(0, 0, 10000, 10000, SpatialReferences.WebMercator);
Polygon outPolygon = GeometryEngine.Instance.GraphicBuffer(envelope, 1000, LineJoinType.Bevel, LineCapType.Round, 4, 0, 96) as Polygon;// round join and round caps
MapPoint point1 = MapPointBuilderEx.CreateMapPoint(0, 0);
MapPoint point2 = MapPointBuilderEx.CreateMapPoint(1, 1, SpatialReferences.WGS84);
MapPoint point3 = MapPointBuilderEx.CreateMapPoint(1000000, 1200000, SpatialReferences.WebMercator);
List<MapPoint> points = new List<MapPoint>() { point1, point2, point3 };
IReadOnlyList<Geometry> geometries = GeometryEngine.Instance.GraphicBuffer(points, 5, LineJoinType.Round, LineCapType.Round, 0, 0, 3000);// determine intersection between two polylines
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(5.0, 1.0));
Polyline line1 = PolylineBuilderEx.CreatePolyline(pts);
List<MapPoint> pts2 = new List<MapPoint>();
pts2.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0));
pts2.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0));
pts2.Add(MapPointBuilderEx.CreateMapPoint(5.0, 3.0));
Polyline line2 = PolylineBuilderEx.CreatePolyline(pts2);
bool intersects = GeometryEngine.Instance.Intersects(line1, line2); // intersects = true
Geometry g = GeometryEngine.Instance.Intersection(line1, line2, GeometryDimensionType.EsriGeometry0Dimension);
Multipoint resultMultipoint = g as Multipoint;
// result is a multiPoint that intersects at (2,2) and (4,2)// determine intersection between two polygons
Envelope env1 = EnvelopeBuilderEx.CreateEnvelope(new Coordinate2D(3.0, 2.0), new Coordinate2D(6.0, 6.0));
Polygon poly1 = PolygonBuilderEx.CreatePolygon(env1);
Envelope env2 = EnvelopeBuilderEx.CreateEnvelope(new Coordinate2D(1.0, 1.0), new Coordinate2D(4.0, 4.0));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env2);
Polygon polyResult = GeometryEngine.Instance.Intersection(poly1, poly2) as Polygon;// create a polygon
List<Coordinate2D> list2D = new List<Coordinate2D>();
list2D.Add(new Coordinate2D(1.0, 1.0));
list2D.Add(new Coordinate2D(1.0, 2.0));
list2D.Add(new Coordinate2D(2.0, 2.0));
list2D.Add(new Coordinate2D(2.0, 1.0));
Polygon polygon = PolygonBuilderEx.CreatePolygon(list2D);
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polygon);
MapPoint pt = GeometryEngine.Instance.LabelPoint(polygon);MapPoint c1 = MapPointBuilderEx.CreateMapPoint(1, 2, 3);
MapPoint c2 = MapPointBuilderEx.CreateMapPoint(4, 2, 4);
// line segment
LineSegment line = LineBuilderEx.CreateLineSegment(c1, c2);
double len = line.Length; // = 3
double len3D = line.Length3D; // = Math.Sqrt(10)
// polyline
Polyline p = PolylineBuilderEx.CreatePolyline(line);
double p_len = p.Length; // = len = 3
double p_len3D = p.Length3D; // = len3D = Math.Sqrt(10)
double ge_len = GeometryEngine.Instance.Length(p); // = p_len = len = 3
double ge_len3d = GeometryEngine.Instance.Length3D(p); // = p_len3D = len3D = Math.Sqrt(10)string json = "{\"hasM\":true,\"rings\":[[[-3000,-2000,10],[-2000,-2000,15],[-1000,-2000,20],[0,-2000,0],[1000,-2000,-20],[2000,-2000,-30],[3000,-2000,10],[4000,-2000,5]]],\"spatialReference\":{\"wkid\":3857}}";
Polygon polygon = PolygonBuilderEx.FromJson(json);
double minM, maxM;
GeometryEngine.Instance.GetMinMaxM(polygon, out minM, out maxM);
// minM = -30
// maxM = 20
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,null],[-1000,-2000,null]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
GeometryEngine.Instance.GetMinMaxM(polyline, out minM, out maxM);
// minM = 10
// maxM = 10
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,null],[-2000,-2000,null],[-1000,-2000,null]]]}";
polyline = PolylineBuilderEx.FromJson(json);
GeometryEngine.Instance.GetMinMaxM(polyline, out minM, out maxM);
// minM = double.Nan
// maxM = double.Nanstring json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,15],[-1000,-2000,20]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
MonotonicType monotonic = GeometryEngine.Instance.GetMMonotonic(polyline);
// monotonic = Monotonic.Ascending
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,5],[-1000,-2000,0]]]}";
polyline = PolylineBuilderEx.FromJson(json);
monotonic = GeometryEngine.Instance.GetMMonotonic(polyline);
// monotonic = Monotonic.Descending
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,15],[-1000,-2000,0]]]}";
polyline = PolylineBuilderEx.FromJson(json);
monotonic = GeometryEngine.Instance.GetMMonotonic(polyline);
// monotonic = Monotonic.NotMonotonicGet a multipoint corresponding to the locations where the specified M values occur along the geometry - GetPointsAtM
string json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,15],[-1000,-2000,20],[0,-2000,0],[1000,-2000,20],[2000,-2000,30],[3000,-2000,10],[4000,-2000,5]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Multipoint multipoint = GeometryEngine.Instance.GetPointsAtM(polyline, 10, 500);
// multiPoint.PointCount = 4
// multipoint.Points[0] X= -3000, Y= -2500 M= 10
// multipoint.Points[1] X= -500, Y= -2500 M= 10
// multipoint.Points[2] X= 500, Y= -2500 M= 10
// multipoint.Points[3] X= 3000, Y= -2500 M= 10string json = "{\"hasM\":true,\"paths\":[[[-2000,0,1],[-1000,1000,2],[-1000,0,3],[1000,1000,4],[2000,1000,5],[2000,2000,6],[3000,2000,7],[4000,0,8]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline subCurve = GeometryEngine.Instance.GetSubCurveBetweenMs(polyline, 2, 6);
// subCurve.PointCount = 5
// subCurve.Points[0] X= --1000, Y= 1000 M= 2
// subCurve.Points[1] X= --1000, Y= 0 M= 3
// subCurve.Points[2] X= 1000, Y= 1000 M= 4
// subCurve.Points[3] X= 2000, Y= -1000 M= 5
// subCurve.Points[4] X= 2000, Y= -2000 M= 6
subCurve = GeometryEngine.Instance.GetSubCurveBetweenMs(polyline, double.NaN, 5);
// subCurve.PointCount = 0
// subCurve.IsEmpty = trueGet line segments corresponding to the normal at the locations where the specified M values occur along the geometry - GetNormalsAtM
IList<MapPoint> inPoints = new List<MapPoint>()
{
MapPointBuilderEx.CreateMapPoint(-3000, -2000, 0, 100),
MapPointBuilderEx.CreateMapPoint(-3000, 0, 0, 200),
MapPointBuilderEx.CreateMapPoint(-1000, 0, 0, 300),
MapPointBuilderEx.CreateMapPoint(-1000, 2000, 0, 100),
MapPointBuilderEx.CreateMapPoint(3000, 2000, 0, 200),
MapPointBuilderEx.CreateMapPoint(3000, 0, 0, 300),
MapPointBuilderEx.CreateMapPoint(1000, 0, 0, 100),
MapPointBuilderEx.CreateMapPoint(1000, -2000, 0, 200),
MapPointBuilderEx.CreateMapPoint(-3000, -2000, 0, 300)
};
Polygon polygon = PolygonBuilderEx.CreatePolygon(inPoints);
// polygon.HasM = true
Polyline polyline = GeometryEngine.Instance.GetNormalsAtM(polygon, 150, 100);
// polyline.PartCount = 5
// polyline.PointCount = 10
// polyline.HasM = false
ReadOnlyPartCollection parts = polyline.Parts;
ReadOnlySegmentCollection segments = parts[0];
LineSegment line = segments[0] as LineSegment;
// line.StartCoordinate = (-3000, -1000)
// line.EndCoordinate = (-2900, -1000)
segments = parts[1];
line = segments[0] as LineSegment;
// line.StartCoordinate = (-1000, 1500)
// line.EndCoordinate = (-900, 1500)
segments = parts[2];
line = segments[0] as LineSegment;
// line.StartCoordinate = (1000, 2000)
// line.EndCoordinate = (1000, 1900)
segments = parts[3];
line = segments[0] as LineSegment;
// line.StartCoordinate = (1500, 0)
// line.EndCoordinate = (1500, 100)
segments = parts[4];
line = segments[0] as LineSegment;
// line.StartCoordinate = (1000, -1000)
// line.EndCoordinate = (900, -1000)string json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,-3],[-2000,-2000,-2]],[[-2000,-2000,1],[-2000,1000,2]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
// polyline has 2 parts
double m1, m2;
GeometryEngine.Instance.GetMsAtDistance(polyline, 0, AsRatioOrLength.AsLength, out m1, out m2);
// m1 = -3
// m2 = NaN
GeometryEngine.Instance.GetMsAtDistance(polyline, 500, AsRatioOrLength.AsLength, out m1, out m2);
// m1 = -2.5
// m2 = NaN
GeometryEngine.Instance.GetMsAtDistance(polyline, 1000, AsRatioOrLength.AsLength, out m1, out m2);
// m1 = -2
// m2 = 1 // m2 has a value because distance 1000 is at the end of the first part, beginning of the second partstring json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,-3],[-2000,-2000,-2],[-1000,-2000,null]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
bool splitHappened;
int partIndex, segmentIndex;
// A point already exists at the given distance
double m = -1;
double distance = 2000;
bool createNewPart = false;
Polyline outputPolyline = GeometryEngine.Instance.InsertMAtDistance(polyline, m, distance, AsRatioOrLength.AsLength, createNewPart, out splitHappened, out partIndex, out segmentIndex) as Polyline;
// splitHappened = false, partIndex = 0, segmentIndex = 2
// outputPolyline.Points[2].M = -1
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,-3],[-2000,-2000,-2],[-1000,-2000,-1]],[[0,0,0],[0,1000,0],[0,2000,2]]],\"spatialReference\":{\"wkid\":3857}}";
polyline = PolylineBuilderEx.FromJson(json);
// A point already exists at the given distance, but createNewPart = true
m = 1;
distance = 3000;
createNewPart = true;
outputPolyline = GeometryEngine.Instance.InsertMAtDistance(polyline, m, distance, AsRatioOrLength.AsLength, createNewPart, out splitHappened, out partIndex, out segmentIndex) as Polyline;
string outputJson = outputPolyline.ToJson();
// splitHappened = true, partIndex = 2, segmentIndex = 0
// outputJson = {"hasM":true,"paths":[[[-3000,-2000,-3],[-2000,-2000,-2],[-1000,-2000,-1]],[[0,0,0],[0,1000,1]],[[0,1000,1],[0,2000,2]]]}}
// A new part has been created and the M values for outputPolyline.Points[4] and outputPolyline.Points[5] have been modified
// A point does not exist at the given distance
m = 1;
distance = 3500;
createNewPart = false;
outputPolyline = GeometryEngine.Instance.InsertMAtDistance(polyline, m, distance, AsRatioOrLength.AsLength, createNewPart, out splitHappened, out partIndex, out segmentIndex) as Polyline;
outputJson = outputPolyline.ToJson();
// splitHappened = true even though createNewPart = false because a new point was created
// partIndex = 1, segmentIndex = 2
// outputJson = {"hasM":true,"paths":[[[-3000,-2000,-3],[-2000,-2000,-2],[-1000,-2000,-1]],[[0,0,0],[0,1000,0],[0,1500,1],[0,2000,2]]]}
// A new point has been inserted (0, 1500, 1) by interpolating the X and Y coordinates and M value set to the input M value.string json = "{\"hasM\":true,\"paths\":[[[0,0,-1],[1,0,0],[1,1,1],[1,2,2],[3,1,3],[5,3,4],[9,5,5],[7,6,6]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
// Interpolate using points (0, 0, 17), (1, 0, 42), (7, 6, 18)
List<MapPoint> updatePoints = new List<MapPoint>(3);
MapPointBuilderEx builder = new MapPointBuilderEx(0, 0);
builder.M = 17;
updatePoints.Add(builder.ToGeometry() as MapPoint);
builder.X = 1;
builder.M = 42;
updatePoints.Add(builder.ToGeometry() as MapPoint);
builder.X = 7;
builder.Y = 6;
builder.M = 18;
updatePoints.Add(builder.ToGeometry() as MapPoint);
// Calibrate all the points in the polyline
double cutOffDistance = polyline.Length;
Polyline updatedPolyline = GeometryEngine.Instance.CalibrateByMs(polyline, updatePoints, UpdateMMethod.Interpolate, cutOffDistance) as Polyline;
// The points in the updated polyline are
// (0, 0, 17 ), ( 1, 0, 42 ), ( 1, 1, 38 ), ( 1, 2, 34 ), ( 3, 1, 30 ), ( 5, 3, 26 ), ( 9, 5, 22 ), ( 7, 6, 18 )
// ExtrapolateBefore using points (1, 2, 42), (9, 5, 18)
builder.X = 1;
builder.Y = 2;
builder.M = 42;
updatePoints[0] = builder.ToGeometry() as MapPoint;
builder.X = 9;
builder.Y = 5;
builder.M = 18;
updatePoints[1] = builder.ToGeometry() as MapPoint;
updatePoints.RemoveAt(2);
updatedPolyline = GeometryEngine.Instance.CalibrateByMs(polyline, updatePoints, UpdateMMethod.ExtrapolateBefore, cutOffDistance) as Polyline;
// The points in the updated polyline are
// ( 0, 0, 66 ), ( 1, 0, 58 ), ( 1, 1, 50 ), ( 1, 2, 42 ), ( 3, 1, 3 ), ( 5, 3, 4 ), ( 9, 5, 18 ), ( 7, 6, 6 )
// ExtrapolateAfter using points (0, 0, 17), (1, 2, 42)
builder.X = 0;
builder.Y = 0;
builder.M = 17;
updatePoints.Insert(0, builder.ToGeometry() as MapPoint);
updatePoints.RemoveAt(2);
updatedPolyline = GeometryEngine.Instance.CalibrateByMs(polyline, updatePoints, UpdateMMethod.ExtrapolateAfter, cutOffDistance) as Polyline;
// The points in the updated polyline are
// ( 0, 0, 17 ), ( 1, 0, 0 ), ( 1, 1, 1 ), ( 1, 2, 42 ), ( 3, 1, 50.333333333333333 ), ( 5, 3, 58.666666666666671 ), ( 9, 5, 67 ), ( 7, 6, 75.333333333333343 )
// ExtrapolateAfter and Interpolate using points (0, 0, 17), (1, 2, 42)
updatedPolyline = GeometryEngine.Instance.CalibrateByMs(polyline, updatePoints, UpdateMMethod.ExtrapolateAfter | UpdateMMethod.Interpolate, cutOffDistance) as Polyline;
// The points in the updated polyline are
// (0,0,17),(1,0,25.333333333333336),(1,1,33.666666666666671),(1,2,42),(3,1,50.333333333333336),(5,3,58.666666666666671),(9,5,67),(7,6,75.333333333333343)List<MapPoint> points = new List<MapPoint>();
MapPointBuilderEx pointBuilder = new MapPointBuilderEx(0, 0);
pointBuilder.HasM = true;
pointBuilder.M = 0;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 8);
pointBuilder.M = 12;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 18);
pointBuilder.M = 10;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 28);
pointBuilder.M = 14;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 32);
pointBuilder.M = 20;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 38);
pointBuilder.M = 26;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 50);
pointBuilder.M = 30;
points.Add(pointBuilder.ToGeometry());
Polyline polyline = PolylineBuilderEx.CreatePolyline(points, AttributeFlags.HasM);
// The points in the polyline are (0, 0, 0), (0, 8, 12), (0, 18, 10), (0, 28, 14), (0, 32, 20), (0, 38, 26), (0, 50, 30)
// Calibrate Ms using points (0, 8, 15), (0, 28, 30), (0, 38, 20)
points.Clear();
pointBuilder.SetValues(0, 8);
pointBuilder.M = 15;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 28);
pointBuilder.M = 30;
points.Add(pointBuilder.ToGeometry());
pointBuilder.SetValues(0, 38);
pointBuilder.M = 20;
points.Add(pointBuilder.ToGeometry());
double cutOffDistance = polyline.Length;
// ExtrapolateBefore
Polyline updatedPolyline = GeometryEngine.Instance.CalibrateMsByDistance(polyline, points, UpdateMMethod.ExtrapolateBefore, true, cutOffDistance) as Polyline;
// The points in the updated polyline are
// (0, 0, 9), (0, 8, 15), (0, 18, 10), (0, 28, 30), (0, 32, 20), (0, 38, 20), (0, 50, 30)
// Interpolate
updatedPolyline = GeometryEngine.Instance.CalibrateMsByDistance(polyline, points, UpdateMMethod.Interpolate, true, cutOffDistance) as Polyline;
// The points in the updated polyline are
// (0, 0, 0), (0, 8, 15), (0, 18, 22.5), (0, 28, 30), (0, 32, 26), (0, 38, 20), (0, 50, 30)
// ExtrapolateAfter
updatedPolyline = GeometryEngine.Instance.CalibrateMsByDistance(polyline, points, UpdateMMethod.ExtrapolateAfter, true, cutOffDistance) as Polyline;
// The points in the updated polyline are
// (0, 0, 0), (0, 8, 15), (0, 18, 10), (0, 28, 30), (0, 32, 20), (0, 38, 20), (0, 50, 8)
// ExtrapolateBefore and Interpolate and ExtrapolateAfter
updatedPolyline = GeometryEngine.Instance.CalibrateMsByDistance(polyline, points, UpdateMMethod.ExtrapolateAfter, true, cutOffDistance) as Polyline;
// The points in the updated polyline are
// (0, 0, 9), (0, 8, 15), (0, 18, 22.5), (0, 28, 30), (0, 32, 26), (0, 38, 20), (0, 50, 8)string json = "{\"hasM\":true,\"paths\":[[[-4,2,1],[-4,5,2],[-2,5,3],[-2,7,4],[2,7,5]],[[4,1,-1],[2,1,-2],[2,-2,-3],[-3,-2,-4],[-3,0,-5]]]}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.DropMs(polyline) as Polyline;
// outputPolyline.HasM = true. Every M-value is NaN.
// outputPolyline.ToJson() = {"hasM":true,"paths":[[[-4,2,null],[-4,5,null],[-2,5,null],[-2,7,null],[2,7,null]],[[4,1,-null],[2,1,null],[2,-2,null],[-3,-2,null],[-3,0,null]]]}
string json = "{\"hasM\":true,\"paths\":[[[2,0,50],[2,1,40],[3,1,30],[3,5,60],[7,5,12],[7,1,20],[9,1,28],[9,3,10]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
// Extrapolate M-values from part 0, point 3 to part 0, point 5
Polyline outPolyline = GeometryEngine.Instance.ExtrapolateMs(polyline, ExtrapolateMMethod.ExtrapolateBefore, 0, 3, 0, 5) as Polyline;
// The points in outPolyline are (x, y, m):
// ( 2, 0, 90 ), ( 2, 1, 85 ), ( 3, 1, 80 ), ( 3, 5, 60 ), ( 7, 5, 12 ), ( 7, 1, 20 ), ( 9, 1, 28 ), ( 9, 3, 10 )
json = "{\"hasM\":true,\"paths\":[[[2,0,50],[2,1,40],[3,1,30],[3,5,60],[7,5,12],[7,1,20],[9,1,28],[9,3,10]],[[5,-4,-10],[5,-2,-40],[10,-2,-60],[10,-6,-50],[8,-6,-40],[8,-4,-80],[6,-4,-90]]],\"spatialReference\":{\"wkid\":4326}}";
polyline = PolylineBuilderEx.FromJson(json);
// Extrapolate M-values from part 0, point 5 to part1, point 1
outPolyline = GeometryEngine.Instance.ExtrapolateMs(polyline, ExtrapolateMMethod.ExtrapolateAfter, 0, 5, 1, 1) as Polyline;
// The points in part 0 of outPolyline don't change. They are (x, y, m):
// ( 2, 0, 50 ), ( 2, 1, 40 ), ( 3, 1, 30 ), ( 3, 5, 60 ), ( 7, 5, 12 ), ( 7, 1, 20 ), ( 9, 1, 28 ), ( 9, 3, 10 )
// The points in part 1 of outPolyline are (x, y, m):
// ( 5, -4, -10 ), ( 5, -2, -40 ), ( 10, -2, -90 ), ( 10, -6, -130 ), ( 8, -6, -150 ), ( 8, -4, -170 ), ( 6, -4, -190 )string json = "{\"hasM\":true,\"paths\":[[[-4,1,1],[-4,3,2],[-2,3,3],[-2,5,1]],[[3,5,1],[3,2,2],[6,2,3],[6,-2,2]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
// Get the distances as length measured from the start of the multipart
IReadOnlyList<double> distances = GeometryEngine.Instance.GetDistancesAtM(polyline, AsRatioOrLength.AsLength, 2);
// distances.Count = 4
// distances[0] = 2 measured to the point (-4, 3, 2)
// distances[1] = 5 measured to the point (-2, 4, 2). Its M-value is interpolated from the segment (-2, 3, 3) -> (-2, 5, 1)
// distances[2] = 9 measured to the point (3, 2, 2)
// distances[3] = 16 measured to the point (6, -2, 2)
// Get the distances as a ratio of the distance measured from the start of the multipart and the total length of the multipart
distances = GeometryEngine.Instance.GetDistancesAtM(polyline, AsRatioOrLength.AsRatio, 2);
// distances.Count = 4;
// distances are { 0.125, 0.3125, 0.5625, 1 }Get a polyline and other details corresponding to the subcurve(s) between the specified M-values - GetSubCurveBetweenMsEx
string json = "{\"hasM\":true,\"paths\":[[[-2000,0,1],[-1000,1000,-1],[-1000,0,3],[1000,1000,4],[2000,1000,5],[2000,2000,6],[3000,2000,7],[4000,0,8]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
// Get the subcurve between M-values 2 and 6
MSubCurveRelation fromDetail, toDetail;
Polyline subCurve = GeometryEngine.Instance.GetSubCurveBetweenMsEx(polyline, 2, 6, out fromDetail, out toDetail);
// The subcurve has one part and five points. The subcurve points are (x, y, m):
// (-1000, 250, 2), (-1000, 0, 3), (1000, 1000, 4), (2000, 1000, 5), (2000, 2000, 6)
// fromDetail = toDetail = MSubCurveRelation.MBetweenMinMax
// Get the subcurve between M-values -2 and 3.5
subCurve = GeometryEngine.Instance.GetSubCurveBetweenMsEx(polyline, -2, 3.5, out fromDetail, out toDetail);
// The subcurve has two parts and five points.
// The subcurve points in part 0 are (x, y, m): (-1000, 1000, -1), (-2000, 0, 1)
// The subcurve points in part 1 are (x, y, m): (-1000, 1000, -1), (-1000, 0, 3), (0, 500, 3.5)
// fromDetail = MSubCurveRelation.MBelowMin, toDetail = MSubCurveRelation.MBetweenMinMaxGet a combination of monotonicity values that describes all trends in the M-values over the length of the multipart - GetMMonotonicity
string json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,5],[-1000,-2000,0]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Monotonicity monotonicity = GeometryEngine.Instance.GetMMonotonicity(polyline);
// monotonicity = Monotonicity.ValueDecreases
// Create a polygon from the polyline
Polygon polygon = PolygonBuilderEx.CreatePolygon(polyline);
monotonicity = GeometryEngine.Instance.GetMMonotonicity(polygon);
// monotonicity = ValueIncreases | ValueDecreases
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,10],[-2000,-2000,10],[-1000,-2000,10]]]}";
polyline = PolylineBuilderEx.FromJson(json);
monotonicity = GeometryEngine.Instance.GetMMonotonicity(polygon);
// monotonicity = Monotonicity.ValueLevel
json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,null],[-2000,-2000,5],[-1000,-2000,10]]]}";
polyline = PolylineBuilderEx.FromJson(json);
monotonicity = GeometryEngine.Instance.GetMMonotonicity(polyline);
// monotonicity = ValueIncreases | ValueEmpty
// Create an empty polyline
Polyline emptyPolyline = PolylineBuilderEx.FromJson("{\"hasM\":true,\"paths\":[]}");
monotonicity = GeometryEngine.Instance.GetMMonotonicity(emptyPolyline);
// monotonicity = Monotonicity.Nonestring json = "{\"hasM\":true,\"paths\":[[[0,0,-1],[1,0,0],[1,1,1],[1,2,2],[3,1,3],[5,3,4],[9,5,5],[7,6,6]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
// Interpolate between points 2 and 6
Polyline outPolyline = GeometryEngine.Instance.InterpolateMsBetween(polyline, 0, 2, 0, 6) as Polyline;
// The points of the output polyline are
// (0, 0, -1), (1, 0, 0), (1, 1, 1), (1, 2, 1.3796279833912741), (3, 1, 2.2285019604153242), (5, 3, 3.3022520459518998), (9, 5, 5), (7, 6, 6)Coordinate2D[] coords = { new Coordinate2D(-2, 2), new Coordinate2D(3, 5), new Coordinate2D(7, 2) };
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords); // polyline.HasM = false
bool isMSimple = GeometryEngine.Instance.IsMSimple(polyline); // isMSimple = false
PolylineBuilderEx polylineBuilder = new PolylineBuilderEx(polyline);
polylineBuilder.HasM = true;
polyline = polylineBuilder.ToGeometry();
isMSimple = GeometryEngine.Instance.IsMSimple(polyline); // isMSimple = false
MapPoint point1 = MapPointBuilderEx.CreateMapPoint(-2, 2, -1, 1);
MapPoint point2 = MapPointBuilderEx.CreateMapPoint(3, 5, -2, 2);
MapPoint[] points = { point1, point2 };
polyline = PolylineBuilderEx.CreatePolyline(points, AttributeFlags.HasM);
isMSimple = GeometryEngine.Instance.IsMSimple(polyline); // isMSimple = true// Create a multipoint and multiply M-values by 6
Coordinate2D[] coords = new Coordinate2D[] { new Coordinate2D(-4, 4), new Coordinate2D(-1, 1), new Coordinate2D(2, 6),
new Coordinate2D(-8, 2), new Coordinate2D(5, -3), new Coordinate2D(7, 2), new Coordinate2D(5, 3), new Coordinate2D(3, -1) };
double[] ms = new double[] { 1, 2, 3, 4, 5, 6, 7, 8 };
MultipointBuilderEx builder = new MultipointBuilderEx(coords);
builder.Ms = ms;
builder.HasM = true;
Multipoint multipoint = builder.ToGeometry();
Multipoint outMultipoint = GeometryEngine.Instance.MultiplyMs(multipoint, 6) as Multipoint;
// The xy-values of the points in outMultipoint are the same as the points in the input multipoint.
// The M-values in outMultipoint are { 6, 12, 18, 24, 30, 36, 42, 48 }// Create a polyline and add an offset of 2 to each of the M-values
MapPointBuilderEx pointBuilder = new MapPointBuilderEx(0, 0);
pointBuilder.M = 1;
MapPoint point1 = pointBuilder.ToGeometry();
pointBuilder.SetValues(2, 2);
pointBuilder.M = 3;
MapPoint point2 = pointBuilder.ToGeometry();
Polyline polyline = PolylineBuilderEx.CreatePolyline(new MapPoint[] { point1, point2 }, AttributeFlags.HasM); ;
Polyline outPolyline = GeometryEngine.Instance.OffsetMs(polyline, 2) as Polyline;
// The xy-values of the points in outPolyline are the same as the points in the input polyline.
// The M-values in outPolyline are { 3, 5 }
// Create an envelope and add an offset of 25 to each of the M-values
EnvelopeBuilderEx envelopeBuilder = new EnvelopeBuilderEx(-5, 1, 2, 4);
envelopeBuilder.MMin = 10;
envelopeBuilder.MMax = 20;
Envelope envelope = envelopeBuilder.ToGeometry();
Envelope outEnvelope = GeometryEngine.Instance.OffsetMs(envelope, 25) as Envelope;
// The xy-values of the points in outEnvelope are the same as the points in the input envelope.
// outEnvelope.MMin = 35, outEnvelope.MMax = 45
// Add a negative offset to the M-values of the envelope
outEnvelope = GeometryEngine.Instance.OffsetMs(envelope, -10) as Envelope;
// The xy-values of the points in outEnvelope are the same as the points in the input envelope.
// outEnvelope.MMin = 0, outEnvelope.MMax = 10string json = "{\"hasM\":true,\"paths\":[[[0,0,1],[0,1,0],[1,1,-1],[1,0,-2]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.OrientByMs(polyline);
// The points of outputPolyline are (x, y, m): (1, 0, -2), (1, 1, -1), (0, 1, 0), (0, 0, 1)
// M-values of second part is not monotonic, so it won't change. The first part will change.
json = "{\"hasM\":true,\"paths\":[[[0,0,1],[0,1,0],[1,1,-1],[1,0,-2]],[[5,4,6],[6,4,5],[8,6,7]]]}";
polyline = PolylineBuilderEx.FromJson(json);
outputPolyline = GeometryEngine.Instance.OrientByMs(polyline);
// The points of part 0 of outputPolyline are (x, y, m): (1, 0, -2), (1, 1, -1), (0, 1, 0), (0, 0, 1)
// The points of part 1 of outputPolyline are (x, y, m): (5, 4, 6), (6, 4, 5), (8, 6, 7)
string json = "{\"hasM\":true,\"paths\":[[[5,4,6],[6,4,5],[8,6,7]],[[0,0,1],[0,1,0],[1,1,-1],[1,0,-2]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
double firstM, lastM;
GeometryEngine.Instance.QueryFirstLastM(polyline, out firstM, out lastM);
// firstM = 6, lastM = -2
json = "{\"hasM\":true,\"paths\":[[[5,4,null],[6,4,5],[8,6,7]],[[0,0,1],[0,1,0],[1,1,-1],[1,0,null]]]}";
polyline = PolylineBuilderEx.FromJson(json);
GeometryEngine.Instance.QueryFirstLastM(polyline, out firstM, out lastM);
// firstM = 5, lastM = -1
json = "{\"hasM\":true,\"paths\":[[[5,4,null],[6,4,null],[8,6,null]],[[0,0,null],[0,1,null],[1,1,null],[1,0,null]]]}";
polyline = PolylineBuilderEx.FromJson(json);
GeometryEngine.Instance.QueryFirstLastM(polyline, out firstM, out lastM);
// firstM and lastM are NaN
json = "{\"hasM\":true,\"paths\":[]}";
polyline = PolylineBuilderEx.FromJson(json);
GeometryEngine.Instance.QueryFirstLastM(polyline, out firstM, out lastM);
// firstM and lastM are NaNstring json = "{\"hasM\":true,\"paths\":[[[5,4,6],[6,4,5],[8,6,7]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.ReverseMs(polyline) as Polyline;
// The xy-coordinates in outputPolyline are not changed.
// The M-values in outputPolyline are: { 7, 5, 6 }Set Ms at the beginning and end of the geometry and interpolate M-values between the two values - SetAndInterpolateMsBetween
string json = "{\"hasM\":true,\"paths\":[[[-3000,-2000],[-2000,-2000],[-1000,-2000],[0,-2000],[1000,-2000],[2000,-2000],[3000,-2000],[4000,-2000]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outPolyline = GeometryEngine.Instance.SetAndInterpolateMsBetween(polyline, 100, 800) as Polyline;
ReadOnlyPointCollection outPoints = outPolyline.Points;
// outPoints M values are { 100, 200, 300, 400, 500, 600, 700, 800 };string json = "{\"hasM\":true,\"paths\":[[[-3000,-2000,1],[-2000,-2000,2],[-1000,-2000,3],[0,-2000,null],[1000,-2000,4],[2000,-2000,5],[3000,-2000,10],[4000,-2000,11],[5000,-2000,12],[6000,-2000,13],[7000,-2000,14]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outPolyline = GeometryEngine.Instance.SetMsAsDistance(polyline, AsRatioOrLength.AsLength) as Polyline;
// The xy-coordinates don't change.
// The M-values of the vertices in outPolyline are (x, y, m):
// { 0, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000 }
json = "{\"hasM\":true,\"rings\":[[[0,0],[0,3000],[4000,3000],[4000,0],[0,0]]],\"spatialReference\":{\"wkid\":3857}}";
Polygon polygon = PolygonBuilderEx.FromJson(json);
Polygon outPolygon = GeometryEngine.Instance.SetMsAsDistance(polygon, AsRatioOrLength.AsLength) as Polygon;
// The M-values of the vertices in outPolygon are (x, y, m): { 0, 3000, 7000, 10000, 14000 };Set the M-values of the vertices as scaled and offset distances measured along a polyline - SetMsAsDistance
string json = "{\"hasM\":true,\"paths\":[[[0,0,1],[3,0,2],[3,6,3],[7,6,4]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Coordinate2D origin = new Coordinate2D(0, 0);
Polyline outputPolyline = GeometryEngine.Instance.SetMsAsDistance(polyline, origin, 0.5, 1, true) as Polyline;
// The xy-coordinates of the polyline don't change.
// The points of outputPolyline are (x, y, m):
// (0, 0, 1), (3, 0, 2.5), (3, 6, 5.5), (7, 6, 7.5)
// Measurements will start at the end of the polyline, point (7, 6)
origin = new Coordinate2D(4, 6);
outputPolyline = GeometryEngine.Instance.SetMsAsDistance(polyline, origin, 0.5, 1, true) as Polyline;
// The points of outputPolyline are (x, y, m):
// (0, 0, 7.5), (3, 0, 6), (3, 6, 3), (7, 6, 1)SpatialReference sr = SpatialReferences.WebMercator; // precision = 1 / MScale = 0.0001
// MapPoint
MapPointBuilderEx pointBuilder = new MapPointBuilderEx(3, 4, sr);
pointBuilder.M = 5.00006;
MapPoint point = pointBuilder.ToGeometry();
MapPoint outputPoint = GeometryEngine.Instance.SnapMsToSpatialReference(point) as MapPoint;
// outputPoint.M = 5.0001
// Multipoint
pointBuilder = new MapPointBuilderEx(-3, -4, sr);
pointBuilder.M = -5.000007;
MapPoint point2 = pointBuilder.ToGeometry();
Multipoint multipoint = MultipointBuilderEx.CreateMultipoint(new MapPoint[] { point, point2 }, AttributeFlags.HasM, sr);
Multipoint outputMultipoint = GeometryEngine.Instance.SnapMsToSpatialReference(multipoint) as Multipoint;
// outputMultipoint.Points[0].M = 5.0001, outputMultipoint.Points[1].M = -5
// Polyline
string json = "{\"hasM\":true,\"paths\":[[[3,2,10.00065],[3,4,15.000325],[5,4,20],[5,2,15.000325],[3,2,10.00065]]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.SnapMsToSpatialReference(polyline) as Polyline;
// The M-values for the vertices in outputPolyline are { 10.0007, 15.0003, 20, 15.0003, 10.0007 }Set the M-values of the vertices as scaled and offset M distances measured along a polyline - UpdateAllMsByMs
string json = "{\"hasM\":true,\"paths\":[[[-8,2,1],[-8,5,8],[-5,5,0],[-5,7,12]],[[3,2,20],[7,2,30],[7,4,10],[13,4,5]]]}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Coordinate2D origin = new Coordinate2D(-5, 6);
Polyline outputPolyline = GeometryEngine.Instance.UpdateAllMsByMs(polyline, origin, 1, 0, true);
// The xy-coordinates don't change.
// The M-values of the vertices in part 0 of outputPolyline are { 27, 20, 12, 0 }
// The M-values of the vertices in part 1 of outputPolyline are { 27, 37, 57, 62 }
outputPolyline = GeometryEngine.Instance.UpdateAllMsByMs(polyline, origin, 2, 4, true);
// The M-values of the vertices in part 0 of outputPolyline are { 58, 44, 28, 4 }
// The M-values of the vertices in part 1 of outputPolyline are { 58, 78, 118, 128 }string json = "{\"hasM\":true,\"paths\":[[[-8,2,1],[-8,5,8],[-5,5,0],[-5,7,12]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.UpdateMsByDistance(polyline, 0, 0, 0, 2, 10, 20, UpdateMMethod.Interpolate, true);
// The xy-coordinates don't change.
// The M-values of the vertices in outputPolyline are { 10, 15, 20, 12 }
json = "{\"hasM\":true,\"paths\":[[[-8,2,1],[-8,5,8],[-5,5,0],[-5,7,12]],[[3,2,20],[7,2,30],[7,4,10],[13,4,5]]]}";
polyline = PolylineBuilderEx.FromJson(json);
outputPolyline = GeometryEngine.Instance.UpdateMsByDistance(polyline, 0, 2, 1, 1, 10, 20, UpdateMMethod.ExtrapolateBefore, true);
// The M-values of the vertices in part 0 of outputPolyline are { -5, 2.5, 10, 5 }
// The M-values of the vertices in part 1 of outputPolyline are { 20, 20, 10, 5 }Update M-values with the interpolation ratio determined by existing M-values and the input M-values - UpdateMsByMs
string json = "{\"hasM\":true,\"paths\":[[[-8,2,1],[-8,5,8],[-5,5,0],[-5,7,12]]],\"spatialReference\":{\"wkid\":4326}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
Polyline outputPolyline = GeometryEngine.Instance.UpdateMsByMs(polyline, 0, 1, 0, 3, -2, 14, UpdateMMethod.Interpolate);
// The xy-coordinates don't change.
// The M-values of the vertices in outputPolyline are (x, y, m): { 1, -2, 30, 14 }MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0);
MapPoint ptResult = GeometryEngine.Instance.Move(pt, -3.5, 2.5) as MapPoint;
// ptResult is (-2.5, 5.5)MapPoint zPt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0, 2.0);
MapPoint zPtResult = GeometryEngine.Instance.Move(zPt, 4, 0.25, 0.5) as MapPoint;
// zPtResult is (5.0, 3.25, 2.5);List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 3.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3, 2, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(4.0, 2.0, 3.0));
Polyline polyline = PolylineBuilderEx.CreatePolyline(pts);
Geometry geometry = GeometryEngine.Instance.Move(polyline, 3, 2);
Polyline polylineResult = geometry as Polyline;
// polylineResult.Points[0] = 4.0, 3.0, 3.0
// polylineResult.Points[1] = 6.0, 5.0, 3.0
// polylineResult.Points[2] = 6.0, 4.0, 3.0
// polylineResult.Points[3] = 7.0, 4.0, 3.0LineSegment line = LineBuilderEx.CreateLineSegment(MapPointBuilderEx.CreateMapPoint(0, 3), MapPointBuilderEx.CreateMapPoint(5.0, 3.0));
Polyline polyline = PolylineBuilderEx.CreatePolyline(line);
bool simple = GeometryEngine.Instance.IsSimpleAsFeature(polyline);
// ratio = false
MapPoint pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 1.0, false, 0.0, SegmentExtensionType.NoExtension);
// pt = 1.0, 3.0
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 1.0, false, -1.0, SegmentExtensionType.NoExtension);
// pt = 1.0, 4.0
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 1.0, false, 2.0, SegmentExtensionType.NoExtension);
// pt = 1.0, 1.0
// ratio = true
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 0.5, true, 0, SegmentExtensionType.NoExtension);
// pt = 2.5, 3.0
// move past the line
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 7, false, 0, SegmentExtensionType.NoExtension);
// pt = 5.0, 3.0
// move past the line with extension at "to" point
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 7, false, 0, SegmentExtensionType.ExtendEmbeddedAtTo);
// pt = 7.0, 3.0
// negative distance with extension at "from" point
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, -2, false, 0, SegmentExtensionType.ExtendEmbeddedAtFrom);
// pt = -2.0, 3.0
// ratio = true
pt = GeometryEngine.Instance.MovePointAlongLine(polyline, 0.5, true, 0, SegmentExtensionType.NoExtension);
// pt = 2.5, 3.0
// line with Z
List<Coordinate3D> coords3D = new List<Coordinate3D> { new Coordinate3D(0, 0, 0), new Coordinate3D(1113195, 1118890, 5000) };
Polyline polylineZ = PolylineBuilderEx.CreatePolyline(coords3D, SpatialReferences.WebMercator);
// polylineZ.HasZ = true
// ratio = true, no offset
pt = GeometryEngine.Instance.MovePointAlongLine(polylineZ, 0.5, true, 0, SegmentExtensionType.NoExtension);
// pt.X = 556597.5
// pt.Y = 559445
// pt.Z = 2500
// ratio = true, past the line with "to" extension, no offset
pt = GeometryEngine.Instance.MovePointAlongLine(polylineZ, 1.5, true, 0, SegmentExtensionType.ExtendEmbeddedAtTo);
// pt.X = 1669792.5
// pt.Y = 1678335
// pt.Z = 7500
// ratio = true, negative distance past the line with no extension, no offset
pt = GeometryEngine.Instance.MovePointAlongLine(polylineZ, -1.5, true, 0, SegmentExtensionType.NoExtension);
// pt.X = 0
// pt.Y = 0
// pt.Z = -7500
// polyline with Z but 2d distance = 0
MapPoint pt3 = MapPointBuilderEx.CreateMapPoint(5, 5, 0);
MapPoint pt4 = MapPointBuilderEx.CreateMapPoint(5, 5, 10);
List<MapPoint> pts = new List<MapPoint>() { pt3, pt4 };
polyline = PolylineBuilderEx.CreatePolyline(pts);
// polyline.HasZ = true
// polyline.Length3D = 10
// polyline.Length = 0
MapPoint result = GeometryEngine.Instance.MovePointAlongLine(polyline, 2, false, 0, SegmentExtensionType.NoExtension);
// result = 5, 5, 2
// polyline with length2d = 0 and length3d = 0
MapPoint pt5 = MapPointBuilderEx.CreateMapPoint(5, 5, 10);
MapPoint pt6 = MapPointBuilderEx.CreateMapPoint(5, 5, 10);
pts.Clear();
pts.Add(pt5);
pts.Add(pt6);
polyline = PolylineBuilderEx.CreatePolyline(pts);
// polyline.HasZ = true
// polyline.Length3D = 0
// polyline.Length = 0
result = GeometryEngine.Instance.MovePointAlongLine(polyline, 3, true, 0, SegmentExtensionType.NoExtension);
// result = 5, 5, 10
result = GeometryEngine.Instance.MovePointAlongLine(polyline, 3, true, 0, SegmentExtensionType.ExtendEmbeddedAtFrom);
// result = 5, 5, 10
// polyline with Z and M
List<MapPoint> inputPoints = new List<MapPoint>()
{
MapPointBuilderEx.CreateMapPoint(1, 2, 3, 4),
MapPointBuilderEx.CreateMapPoint(1, 2, 33, 44),
};
Polyline polylineZM = PolylineBuilderEx.CreatePolyline(inputPoints, SpatialReferences.WGS84);
// polylineZM.HasZ = true
// polylineZM.HasM = true
// ratio = true, no offset
MapPoint pointAlong = GeometryEngine.Instance.MovePointAlongLine(polylineZM, 0.5, true, 0, SegmentExtensionType.NoExtension);
// pointAlong = 1, 2, 18, 24
// ratio = true with offset
pointAlong = GeometryEngine.Instance.MovePointAlongLine(polylineZM, 0.2, true, 2.23606797749979, SegmentExtensionType.NoExtension);
// pointAlong = 1, 2, 9, 12List<Coordinate2D> coords2D = new List<Coordinate2D>()
{
new Coordinate2D(0, 0),
new Coordinate2D(1, 4),
new Coordinate2D(2, 7),
new Coordinate2D(-10, 3)
};
Multipoint multipoint = MultipointBuilderEx.CreateMultipoint(coords2D, SpatialReferences.WGS84);
IReadOnlyList<Geometry> result = GeometryEngine.Instance.MultipartToSinglePart(multipoint);
// result.Count = 4,
// 'explode' a multipart polygon
result = GeometryEngine.Instance.MultipartToSinglePart(multipartPolygon);
// create a bag of geometries
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords2D, SpatialReferences.WGS84);
//At 2.x - GeometryBag bag = GeometryBagBuilder.CreateGeometryBag(new List<Geometry>() { multipoint, polygon });
var bag = GeometryBagBuilderEx.CreateGeometryBag(new List<Geometry>() { multipoint, polygon });
// bag.PartCount = =2
result = GeometryEngine.Instance.MultipartToSinglePart(bag);
// result.Count == 2
// result[0] is MultiPoint
// result[1] is PolygonSpatialReference sr = SpatialReferences.WGS84;
MapPoint pt = MapPointBuilderEx.CreateMapPoint(5, 5, sr);
List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(10, 1),
new Coordinate2D(10, -4),
new Coordinate2D(0, -4),
new Coordinate2D(0, 1),
new Coordinate2D(10, 1)
};
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords);
// find the nearest point in the polygon geomtry to the pt
ProximityResult result = GeometryEngine.Instance.NearestPoint(polygon, pt);
// result.Point = 5, 1
// result.SegmentIndex = 3
// result.PartIndex = 0
// result.PointIndex = null
//result.Distance = 4
//result.RightSide = false
// find the nearest vertex in the polgyon geometry to the pt
result = GeometryEngine.Instance.NearestVertex(polygon, pt);
// result.Point = 10, 1
// result.PointIndex = 0
// result.SegmentIndex = null
// result.PartIndex = 0
// result.Distance = Math.Sqrt(41)
// result.RightSide = falseMapPoint pt1 = MapPointBuilderEx.CreateMapPoint(1, 1, 1);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2, 2, 2);
MapPoint pt3 = MapPointBuilderEx.CreateMapPoint(10, 2, 1);
//
// test pt1 to pt2
//
ProximityResult result = GeometryEngine.Instance.NearestPoint3D(pt1, pt2);
// result.Point = 1,1,1
// result.Distance = Math.Sqrt(3)
// result.SegmentIndex = null
// result.PartIndex = 0
// result.PointIndex = 0
// result.RightSide = false
//
// multipoint built from pt1, pt2. should be closer to pt2
//
Multipoint multipoint = MultipointBuilderEx.CreateMultipoint(new List<MapPoint>() { pt1, pt2 });
result = GeometryEngine.Instance.NearestPoint3D(multipoint, pt3);
// result.Point = 2, 2, 2
// result.Distance = Math.Sqrt(65)
// result.SegmentIndex = null
// result.PartIndex = 1
// result.PointIndex = 1
// result.RightSide = falseList<MapPoint> linePts = new List<MapPoint>();
linePts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84));
linePts.Add(MapPointBuilderEx.CreateMapPoint(10.0, 1.0, SpatialReferences.WGS84));
Polyline polyline = PolylineBuilderEx.CreatePolyline(linePts);
Geometry g = GeometryEngine.Instance.Offset(polyline, 10, OffsetType.Square, 0);
Polyline gResult = g as Polyline;
// gResult.PointCount = 2
// gResult.Points[0] = (1, -9)
// gResult.Points[1] = (10, -9)
g = GeometryEngine.Instance.Offset(polyline, -10, OffsetType.Round, 0.5);
gResult = g as Polyline;
// gResult.PointCount = 2
// gResult.Points[0] = (1, -11
// gResult.Points[1] = (10, 11)
//
// elliptic arc curve
//
Coordinate2D fromPt = new Coordinate2D(2, 1);
Coordinate2D toPt = new Coordinate2D(1, 2);
Coordinate2D interiorPt = new Coordinate2D(1 + Math.Sqrt(2) / 2, 1 + Math.Sqrt(2) / 2);
EllipticArcSegment circularArc = EllipticArcBuilderEx.CreateCircularArc(fromPt.ToMapPoint(), toPt.ToMapPoint(), interiorPt);
polyline = PolylineBuilderEx.CreatePolyline(circularArc);
g = GeometryEngine.Instance.Offset(polyline, -0.25, OffsetType.Miter, 0.5);
gResult = g as Polyline;
g = GeometryEngine.Instance.Offset(polyline, 0.25, OffsetType.Bevel, 0.5);
gResult = g as Polyline;
//
// offset for a polygon
//
List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(10.0, 10.0, SpatialReferences.WGS84));
list.Add(MapPointBuilderEx.CreateMapPoint(10.0, 20.0, SpatialReferences.WGS84));
list.Add(MapPointBuilderEx.CreateMapPoint(20.0, 20.0, SpatialReferences.WGS84));
list.Add(MapPointBuilderEx.CreateMapPoint(20.0, 10.0, SpatialReferences.WGS84));
Polygon polygon = PolygonBuilderEx.CreatePolygon(list);
g = GeometryEngine.Instance.Offset(polygon, 2, OffsetType.Square, 0);
Polygon gPolygon = g as Polygon;
g = GeometryEngine.Instance.Offset(polygon, -2, OffsetType.Round, 0.3);
gPolygon = g as Polygon;
g = GeometryEngine.Instance.Offset(polygon, -0.5, OffsetType.Miter, 0.6);
gPolygon = g as Polygon;MapPoint pt1 = MapPointBuilderEx.CreateMapPoint(1.5, 1.5);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(1.25, 1.75);
MapPoint pt3 = MapPointBuilderEx.CreateMapPoint(3, 1.5);
MapPoint pt4 = MapPointBuilderEx.CreateMapPoint(1.5, 2);
//
// point and point overlap
//
bool overlaps = GeometryEngine.Instance.Overlaps(pt1, pt2); // overlaps = false
overlaps = GeometryEngine.Instance.Overlaps(pt1, pt1); // overlaps = false
// Two geometries overlap if the region of their intersection is of the same dimension as the geometries involved and
// is not equivalent to either of the geometries.
List<MapPoint> pts = new List<MapPoint>();
pts.Add(pt1);
pts.Add(pt2);
pts.Add(pt3);
List<MapPoint> pts2 = new List<MapPoint>();
pts2.Add(pt2);
pts2.Add(pt3);
pts2.Add(pt4);
//
// pt and line overlap
//
Polyline polyline = PolylineBuilderEx.CreatePolyline(pts);
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polyline); // isSimple = true
overlaps = GeometryEngine.Instance.Overlaps(polyline, pt1); // overlaps = false
//
// line and line
//
Polyline polyline2 = PolylineBuilderEx.CreatePolyline(pts2);
isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polyline2); // isSimple = true
overlaps = GeometryEngine.Instance.Overlaps(polyline, polyline2); // overlaps = trueMapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0, SpatialReferences.WGS84);
Geometry result = GeometryEngine.Instance.Project(pt, SpatialReferences.WebMercator);
MapPoint projectedPt = result as MapPoint;// create the polygon
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0, SpatialReferences.WGS84));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0, SpatialReferences.WGS84));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0, SpatialReferences.WGS84));
Polygon polygon = PolygonBuilderEx.CreatePolygon(pts);
// ensure it is simple
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polygon);
// create the spatial reference to project to
SpatialReference northPole = SpatialReferenceBuilder.CreateSpatialReference(102018); // north pole stereographic
// project
Geometry geometry = GeometryEngine.Instance.Project(polygon, northPole);string json = "{\"curvePaths\":[[[-13046586.8335,4036570.6796000004]," +
"{\"c\":[[-13046645.107099999,4037152.5873000026]," +
"[-13046132.776277589,4036932.1325614937]]}]],\"spatialReference\":{\"wkid\":3857}}";
Polyline polyline = PolylineBuilderEx.FromJson(json);
EllipticArcSegment arc = polyline.Parts[0][0] as EllipticArcSegment;
// No extension, distanceAlongCurve = 0.5
// use the polyline
Polyline poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.NoExtension, 0.5, AsRatioOrLength.AsRatio, 1000);
// or a segment
LineSegment seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.NoExtension, 0.5, AsRatioOrLength.AsRatio, 1000);
// TangentAtFrom, distanceAlongCurve = -1.2
poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.ExtendTangentAtFrom, -1.2, AsRatioOrLength.AsRatio, 1000);
seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.ExtendTangentAtFrom, -1.2, AsRatioOrLength.AsRatio, 1000);
// TangentAtTo (ignored because distanceAlongCurve < 0), distanceAlongCurve = -1.2
poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.ExtendTangentAtTo, -1.2, AsRatioOrLength.AsRatio, 1000);
seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.ExtendTangentAtTo, -1.2, AsRatioOrLength.AsRatio, 1000);
// TangentAtTo, distanceAlongCurve = 1.2
poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.ExtendTangentAtTo, 1.2, AsRatioOrLength.AsRatio, 1000);
seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.ExtendTangentAtTo, 1.2, AsRatioOrLength.AsRatio, 1000);
// TangentAtFrom (ignored because distanceAlongCurve > 0), distanceAlongCurve = 1.2
poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.ExtendTangentAtFrom, 1.2, AsRatioOrLength.AsRatio, 1000);
seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.ExtendTangentAtFrom, 1.2, AsRatioOrLength.AsRatio, 1000);
// EmbeddedAtTo, distanceAlongCurve = 1.2
poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.ExtendEmbeddedAtTo, 1.2, AsRatioOrLength.AsRatio, 1000);
seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.ExtendEmbeddedAtTo, 1.2, AsRatioOrLength.AsRatio, 1000);
// EmbeddedAtFrom, distanceAlongCurve = -0.2
poly_normal = GeometryEngine.Instance.QueryNormal(polyline, SegmentExtensionType.ExtendEmbeddedAtFrom, -0.2, AsRatioOrLength.AsRatio, 1000);
seg_normal = GeometryEngine.Instance.QueryNormal(arc, SegmentExtensionType.ExtendEmbeddedAtFrom, -0.2, AsRatioOrLength.AsRatio, 1000);SpatialReference sr = SpatialReferences.WGS84;
// Horizontal line segment
Coordinate2D start = new Coordinate2D(1, 1);
Coordinate2D end = new Coordinate2D(11, 1);
LineSegment line = LineBuilderEx.CreateLineSegment(start, end, sr);
Polyline polyline = PolylineBuilderEx.CreatePolyline(line);
// Don't extend the segment
MapPoint outPoint = GeometryEngine.Instance.QueryPoint(polyline, SegmentExtensionType.NoExtension, 1.0, AsRatioOrLength.AsLength);
// outPoint = (2, 1)
// or the segment
MapPoint outPoint_seg = GeometryEngine.Instance.QueryPoint(line, SegmentExtensionType.NoExtension, 1.0, AsRatioOrLength.AsLength);
// outPoint_seg = (2, 1)
// Extend infinitely in both directions
outPoint = GeometryEngine.Instance.QueryPoint(polyline, SegmentExtensionType.ExtendTangents, 1.5, AsRatioOrLength.AsRatio);
// outPoint = (16, 1)
outPoint_seg = GeometryEngine.Instance.QueryPoint(line, SegmentExtensionType.ExtendTangents, 1.5, AsRatioOrLength.AsRatio);
// outPoint_seg = (16, 1)// Horizontal line segment
List<MapPoint> linePts = new List<MapPoint>();
linePts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84));
linePts.Add(MapPointBuilderEx.CreateMapPoint(11.0, 1.0, SpatialReferences.WGS84));
Polyline polyline = PolylineBuilderEx.CreatePolyline(linePts);
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polyline);
// Don't extent the segment
SegmentExtensionType extension = SegmentExtensionType.NoExtension;
// A point on the line segment
MapPoint inPoint = MapPointBuilderEx.CreateMapPoint(2, 1, SpatialReferences.WGS84);
double distanceAlongCurve, distanceFromCurve;
LeftOrRightSide whichSide;
AsRatioOrLength asRatioOrLength = AsRatioOrLength.AsLength;
MapPoint outPoint = GeometryEngine.Instance.QueryPointAndDistance(polyline, extension, inPoint, asRatioOrLength, out distanceAlongCurve, out distanceFromCurve, out whichSide);
// outPoint = 2, 1
// distanceAlongCurve = 1
// distanceFromCurve = 0
// whichSide = GeometryEngine.Instance.LeftOrRightSide.LeftSide
// Extend infinitely in both directions
extension = SegmentExtensionType.ExtendTangents;
// A point on the left side
inPoint = MapPointBuilderEx.CreateMapPoint(16, 6, SpatialReferences.WGS84);
asRatioOrLength = AsRatioOrLength.AsRatio;
outPoint = GeometryEngine.Instance.QueryPointAndDistance(polyline, extension, inPoint, asRatioOrLength, out distanceAlongCurve, out distanceFromCurve, out whichSide);
// outPoint = 16, 1
// distanceAlongCurve = 1.5
// distanceFromCurve = 5
// whichSide = GeometryEngine.Instance.LeftOrRightSide.LeftSideLineSegment line = LineBuilderEx.CreateLineSegment(new Coordinate2D(0, 0), new Coordinate2D(1, 0));
// No extension, distanceAlongCurve = 0.5
LineSegment tangent = GeometryEngine.Instance.QueryTangent(line, SegmentExtensionType.NoExtension, 0.5, AsRatioOrLength.AsRatio, 1);
// tangent.StartCoordinate = (0.5, 0.0)
// tangent.EndCoordinate = (1.5, 0.0)
tangent = GeometryEngine.Instance.QueryTangent(line, SegmentExtensionType.NoExtension, 1.5, AsRatioOrLength.AsLength, 1);
// tangent.StartCoordinate = (1.0, 0.0)
// tangent.EndCoordinate = (2.0, 0.0)
tangent = GeometryEngine.Instance.QueryTangent(line, SegmentExtensionType.ExtendTangentAtTo, 1.5, AsRatioOrLength.AsLength, 1);
// tangent.StartCoordinate = (1.5, 0.0)
// tangent.EndCoordinate = (2.5, 0.0)
tangent = GeometryEngine.Instance.QueryTangent(line, SegmentExtensionType.ExtendTangentAtFrom, -1.5, AsRatioOrLength.AsLength, 1);
// tangent.StartCoordinate = (-1.5, 0.0)
// tangent.EndCoordinate = (-0.5, 0.0)
tangent = GeometryEngine.Instance.QueryTangent(line, SegmentExtensionType.ExtendTangentAtFrom, -0.5, AsRatioOrLength.AsRatio, 1);
// tangent.StartCoordinate = (-0.5, 0.0)
// tangent.EndCoordinate = (0.5, 0.0)SpatialReference sr = SpatialReferences.WGS84;
Coordinate2D start = new Coordinate2D(0, 0);
Coordinate2D end = new Coordinate2D(4, 4);
LineSegment line = LineBuilderEx.CreateLineSegment(start, end, sr);
Coordinate2D[] coords = new Coordinate2D[]
{
new Coordinate2D(-1, 2),
new Coordinate2D(-1, 4),
new Coordinate2D(1, 4),
new Coordinate2D(-1, 2)
};
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords, sr);
// reflect a polygon about the line
Polygon reflectedPolygon = GeometryEngine.Instance.ReflectAboutLine(polygon, line) as Polygon;
// reflectedPolygon points are
// (2, -1), (4, -1), (4, 1), (2, -1)// set up some geometries
// points
MapPoint point0 = MapPointBuilderEx.CreateMapPoint(0, 0, SpatialReferences.WGS84);
MapPoint point1 = MapPointBuilderEx.CreateMapPoint(1, 1, SpatialReferences.WGS84);
MapPoint point2 = MapPointBuilderEx.CreateMapPoint(-5, 5, SpatialReferences.WGS84);
// multipoint
List<MapPoint> points = new List<MapPoint>() { point0, point1, point2 };
Multipoint multipoint = MultipointBuilderEx.CreateMultipoint(points, SpatialReferences.WGS84);
// polygon
List<Coordinate2D> polygonCoords = new List<Coordinate2D>()
{
new Coordinate2D(-10, 0),
new Coordinate2D(0, 10),
new Coordinate2D(10, 0),
new Coordinate2D(-10, 0)
};
Polygon polygon = PolygonBuilderEx.CreatePolygon(polygonCoords, SpatialReferences.WGS84);
// polylines
Polyline polyline1 = PolylineBuilderEx.CreatePolyline(LineBuilderEx.CreateLineSegment(new Coordinate2D(-9.1, 0.1), new Coordinate2D(0, 9)), SpatialReferences.WGS84);
Polyline polyline2 = PolylineBuilderEx.CreatePolyline(LineBuilderEx.CreateLineSegment(new Coordinate2D(-5, 5), new Coordinate2D(0, 5)), SpatialReferences.WGS84);
Polyline polyline3 = PolylineBuilderEx.CreatePolyline(LineBuilderEx.CreateLineSegment(new Coordinate2D(2.09, -2.04), new Coordinate2D(5, 10)), SpatialReferences.WGS84);
Polyline polyline4 = PolylineBuilderEx.CreatePolyline(LineBuilderEx.CreateLineSegment(new Coordinate2D(10, -5), new Coordinate2D(10, 5)), SpatialReferences.WGS84);
List<Segment> segments = new List<Segment>()
{
LineBuilderEx.CreateLineSegment(new Coordinate2D(5.05, -2.87), new Coordinate2D(6.35, 1.57)),
LineBuilderEx.CreateLineSegment(new Coordinate2D(6.35, 1.57), new Coordinate2D(4.13, 2.59)),
LineBuilderEx.CreateLineSegment(new Coordinate2D(4.13, 2.59), new Coordinate2D(5, 5))
};
Polyline polyline5 = PolylineBuilderEx.CreatePolyline(segments, SpatialReferences.WGS84);
segments.Add(LineBuilderEx.CreateLineSegment(new Coordinate2D(5, 5), new Coordinate2D(10, 10)));
Polyline polyline6 = PolylineBuilderEx.CreatePolyline(segments, SpatialReferences.WGS84);
Polyline polyline7 = PolylineBuilderEx.CreatePolyline(polyline5);
Polyline polyline8 = PolylineBuilderEx.CreatePolyline(LineBuilderEx.CreateLineSegment(new Coordinate2D(5, 5), new Coordinate2D(10, 10)), SpatialReferences.WGS84);
segments.Clear();
segments.Add(LineBuilderEx.CreateLineSegment(new Coordinate2D(0.6, 3.5), new Coordinate2D(0.7, 7)));
segments.Add(LineBuilderEx.CreateLineSegment(new Coordinate2D(0.7, 7), new Coordinate2D(3, 9)));
Polyline polyline9 = PolylineBuilderEx.CreatePolyline(segments, SpatialReferences.WGS84);
// now do the Related tests
// Interior/Interior Intersects
string scl = "T********";
bool related = GeometryEngine.Instance.Relate(polygon, polyline1, scl); // related = true
related = GeometryEngine.Instance.Relate(point0, point1, scl); // related = false
related = GeometryEngine.Instance.Relate(point0, multipoint, scl); // related = true
related = GeometryEngine.Instance.Relate(multipoint, polygon, scl); // related = true
related = GeometryEngine.Instance.Relate(multipoint, polyline1, scl); // related = false
related = GeometryEngine.Instance.Relate(polyline2, point2, scl); // related = false
related = GeometryEngine.Instance.Relate(point1, polygon, scl); // related = true
// Interior/Boundary Intersects
scl = "*T*******";
related = GeometryEngine.Instance.Relate(polygon, polyline2, scl); // related = true
related = GeometryEngine.Instance.Relate(polygon, polyline3, scl); // related = false
related = GeometryEngine.Instance.Relate(point1, polygon, scl); // related = false
// Boundary/Boundary Interior intersects
scl = "***T*****";
related = GeometryEngine.Instance.Relate(polygon, polyline4, scl); // related = true
// Overlaps Dim1
scl = "1*T***T**";
related = GeometryEngine.Instance.Relate(polygon, polyline5, scl); // related = true
// Crosses Area/Line (LineB crosses PolygonA)
scl = "1020F1102";
related = GeometryEngine.Instance.Relate(polygon, polyline6, scl); // related = false
related = GeometryEngine.Instance.Relate(polygon, polyline9, scl); // related = true
// Boundary/Boundary Touches
scl = "F***T****";
related = GeometryEngine.Instance.Relate(polygon, polyline7, scl); // related = false
related = GeometryEngine.Instance.Relate(polygon, polyline8, scl); // related = trueList<Coordinate3D> coordsZ = new List<Coordinate3D>()
{
new Coordinate3D(1, 2, double.NaN),
new Coordinate3D(4, 5, 3),
new Coordinate3D(7, 8, double.NaN)
};
Polygon polygon = PolygonBuilderEx.CreatePolygon(coordsZ);
// polygon.HasZ = true
Polygon polygonZReplaced = GeometryEngine.Instance.ReplaceNaNZs(polygon, -1) as Polygon;
// polygonZReplaced.Points[0].Z = -1
// polygonZReplaced.Points[1].Z = 3
// polygonZReplaced.Points[2].Z = -1List<Coordinate2D> polygon1Coords = new List<Coordinate2D>()
{
new Coordinate2D(0, -11000),
new Coordinate2D(1000, -11000),
new Coordinate2D(1000, -12000),
new Coordinate2D(0, -12000),
new Coordinate2D(0, -11000)
};
// reshaper coordinates intersect the polygon
List<Coordinate2D> reshaperCoords = new List<Coordinate2D>()
{
new Coordinate2D(1500, -11800),
new Coordinate2D(-2600, -11800)
};
SpatialReference sr = SpatialReferenceBuilder.CreateSpatialReference(102010);
Polygon polygon1 = PolygonBuilderEx.CreatePolygon(polygon1Coords, sr);
Polyline reshaper = PolylineBuilderEx.CreatePolyline(reshaperCoords, sr);
Polygon outPolygon = GeometryEngine.Instance.Reshape(polygon1, reshaper) as Polygon;
// outPolygon.PartCount = 1
ReadOnlySegmentCollection segments = outPolygon.Parts[0];
// segments.Count = 4
// outPolygon.PointCount = 5
string json = GeometryEngine.Instance.ExportToJson(JsonExportFlags.JsonExportSkipCRS, outPolygon);
// json = "{\"rings\":[[[0,-11800],[0,-11000],[1000,-11000],[1000,-11800],[0,-11800]]]}";
// example where the Reshaper polyline doesn't intersect the input
reshaperCoords.Clear();
reshaperCoords.Add(new Coordinate2D(1000, 1000));
reshaperCoords.Add(new Coordinate2D(2000, 1000));
reshaper = PolylineBuilderEx.CreatePolyline(reshaperCoords, sr);
outPolygon = GeometryEngine.Instance.Reshape(polygon1, reshaper) as Polygon;
// outPolygon = nullList<Coordinate2D> list2D = new List<Coordinate2D>();
list2D.Add(new Coordinate2D(1.0, 1.0));
list2D.Add(new Coordinate2D(1.0, 2.0));
list2D.Add(new Coordinate2D(2.0, 2.0));
list2D.Add(new Coordinate2D(2.0, 1.0));
Polygon polygon = PolygonBuilderEx.CreatePolygon(list2D);
Geometry g = GeometryEngine.Instance.ReverseOrientation(polygon);
Polygon gPolygon = g as Polygon;
// gPolygon.Points[0] = 1.0, 1.0
// gPolygon.Points[1] = 2.0, 1.0
// gPolygon.Points[2] = 2.0, 2.0
// gPolygon.Points[3] = 1.0, 2.0
// gPolygon.Points[4] = 1.0, 1.0
// gPolygon.Area = -1 * polygon.AreaMapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0);
MapPoint rotatePt = MapPointBuilderEx.CreateMapPoint(3.0, 3.0);
Geometry result = GeometryEngine.Instance.Rotate(pt, rotatePt, Math.PI / 2);
// result point is (3, 1)// rotate a polyline
MapPoint fixedPt = MapPointBuilderEx.CreateMapPoint(3.0, 3.0);
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 5.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(5, 5));
pts.Add(MapPointBuilderEx.CreateMapPoint(5.0, 1.0));
Polyline polyline = PolylineBuilderEx.CreatePolyline(pts);
Polyline rotated = GeometryEngine.Instance.Rotate(polyline, fixedPt, Math.PI / 4) as Polyline; // rotate 45 degList<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3, 3, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0, 3.0));
MapPoint midPt = MapPointBuilderEx.CreateMapPoint(1.5, 1.5);
// polyline
Polyline polyline = PolylineBuilderEx.CreatePolyline(pts);
// polyline.Length = 6
// polyline.Length3D = 0
Geometry g = GeometryEngine.Instance.Scale(polyline, midPt, 0.5, 0.5);
Polyline resultPolyline = g as Polyline;
// resultPolyline.length = 3
// resultPolyline.Points[0] = 1.25, 1.25, 3
// resultPolyline.Points[1] = 1.25, 2.25, 3
// resultPolyline.Points[2] = 2.25, 2.25, 3
// resultPolyline.Points[3] = 2.25, 1.25, 3
// 3D point - scale in 3d
MapPoint midPtZ = MapPointBuilderEx.CreateMapPoint(1.5, 1.5, 1);
g = GeometryEngine.Instance.Scale(polyline, midPtZ, 0.5, 0.5, 0.25);
resultPolyline = g as Polyline;
// resultPolyline.Points[0] = 1.25, 1.25, 1.5
// resultPolyline.Points[1] = 1.25, 2.25, 1.5
// resultPolyline.Points[2] = 2.25, 2.25, 1.5
// resultPolyline.Points[3] = 2.25, 1.25, 1.5List<Coordinate3D> coordsZ = new List<Coordinate3D>()
{
new Coordinate3D(1, 2, 3),
new Coordinate3D(4, 5, 6),
new Coordinate3D(7, 8, double.NaN)
};
Polyline polyline = PolylineBuilderEx.CreatePolyline(coordsZ);
// polyline.HasZ = true
Polyline polylineSetZ = GeometryEngine.Instance.SetConstantZ(polyline, -1) as Polyline;
// polylineSetZ.Points[0].Z = -1
// polylineSetZ.Points[1].Z = -1
// polylineSetZ.Points[2].Z = -1
polylineSetZ = GeometryEngine.Instance.SetConstantZ(polyline, double.NaN) as Polyline;
// polyline.HasZ = true
// polylineSetZ.Points[0].HasZ = true
// polylineSetZ.Points[0].Z = NaN
// polylineSetZ.Points[1].HasZ = true
// polylineSetZ.Points[1].Z = NaN
// polylineSetZ.Points[2].HasZ = true
// polylineSetZ.Points[2].Z = NaN
polylineSetZ = GeometryEngine.Instance.SetConstantZ(polyline, double.PositiveInfinity) as Polyline;
// polyline.HasZ = true
// polylineSetZ.Points[0].HasZ = true
// polylineSetZ.Points[0].Z = double.PositiveInfinity
// polylineSetZ.Points[1].HasZ = true
// polylineSetZ.Points[1].Z = double.PositiveInfinity
// polylineSetZ.Points[2].HasZ = true
// polylineSetZ.Points[2].Z = double.PositiveInfinity// pt
MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0, SpatialReferences.WebMercator);
double area = GeometryEngine.Instance.ShapePreservingArea(pt); // area = 0
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3, 3, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0, 3.0));
// multipoint
Multipoint mPt = MultipointBuilderEx.CreateMultipoint(pts);
area = GeometryEngine.Instance.ShapePreservingArea(mPt); // area = 0
// polyline
Polyline polyline = PolylineBuilderEx.CreatePolyline(pts);
area = GeometryEngine.Instance.ShapePreservingArea(polyline); // area = 0
// polygon
Polygon polygon = PolygonBuilderEx.CreatePolygon(pts, SpatialReferences.WGS84);
area = GeometryEngine.Instance.ShapePreservingArea(polygon);
polygon = PolygonBuilderEx.CreatePolygon(pts, SpatialReferences.WebMercator);
area = GeometryEngine.Instance.ShapePreservingArea(polygon);
polygon = PolygonBuilderEx.CreatePolygon(new[]
{
MapPointBuilderEx.CreateMapPoint( -170, 45),
MapPointBuilderEx.CreateMapPoint( 170, 45),
MapPointBuilderEx.CreateMapPoint( 170, -45),
MapPointBuilderEx.CreateMapPoint( -170, -54)
}, SpatialReferences.WGS84);
var area_meters = GeometryEngine.Instance.ShapePreservingArea(polygon);// , AreaUnits.SquareMeters);
var area_miles = GeometryEngine.Instance.ShapePreservingArea(polygon, AreaUnit.SquareMiles);
// area_meters - 352556425383104.37
// area_miles - 136122796.848425// pt
MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0, SpatialReferences.WebMercator);
double len = GeometryEngine.Instance.ShapePreservingLength(pt); // len = 0
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3, 3, 3.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0, 3.0));
// multipoint
Multipoint mPt = MultipointBuilderEx.CreateMultipoint(pts);
len = GeometryEngine.Instance.ShapePreservingLength(mPt); // len = 0
// polyline
Polyline polyline = PolylineBuilderEx.CreatePolyline(pts, SpatialReferences.WGS84);
len = GeometryEngine.Instance.ShapePreservingLength(polyline);
// polygon
Polygon polygon = PolygonBuilderEx.CreatePolygon(pts, SpatialReferences.WGS84);
len = GeometryEngine.Instance.ShapePreservingLength(polygon);
polyline = PolylineBuilderEx.CreatePolyline(new[]
{
MapPointBuilderEx.CreateMapPoint( -170, 0),
MapPointBuilderEx.CreateMapPoint( 170, 0)
}, SpatialReferences.WGS84);
var length_meters = GeometryEngine.Instance.ShapePreservingLength(polyline); // , LinearUnits.Meters);
var length_miles = GeometryEngine.Instance.ShapePreservingLength(polyline, LinearUnit.Miles);
// length_meters - 37848626.869713023
// length_miles - 23518.046402579574// right side, round caps
SpatialReference sr = SpatialReferenceBuilder.CreateSpatialReference(102010);
List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(1200, 5800),
new Coordinate2D(1400, 5800),
new Coordinate2D(1400, 6000),
new Coordinate2D(1300, 6000),
new Coordinate2D(1300, 5700)
};
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
Polygon output = GeometryEngine.Instance.SideBuffer(polyline, 20, LeftOrRightSide.RightSide, LineCapType.Round) as Polygon;SpatialReference spatialReference = SpatialReferenceBuilder.CreateSpatialReference(102010);
List<Coordinate2D> coordinates = new List<Coordinate2D>()
{
new Coordinate2D(1200, 5800),
new Coordinate2D(1400, 5800),
new Coordinate2D(1400, 6000),
new Coordinate2D(1300, 6000),
new Coordinate2D(1300, 5700)
};
Polyline polyline1 = PolylineBuilderEx.CreatePolyline(coordinates, spatialReference);
coordinates.Clear();
coordinates.Add(new Coordinate2D(1400, 6050));
coordinates.Add(new Coordinate2D(1600, 6150));
coordinates.Add(new Coordinate2D(1800, 6050));
Polyline polyline2 = PolylineBuilderEx.CreatePolyline(coordinates, spatialReference);
List<Polyline> polylines = new List<Polyline>() { polyline1, polyline2 };
IReadOnlyList<Geometry> outGeometries = GeometryEngine.Instance.SideBuffer(polylines, 10, LeftOrRightSide.RightSide, LineCapType.Round);var g1 = PolygonBuilderEx.FromJson("{\"rings\": [ [ [0, 0], [10, 0], [10, 10], [0, 10] ] ] }");
var result = GeometryEngine.Instance.Area(g1); // result = -100.0 - negative due to wrong ring orientation
// simplify it
var result2 = GeometryEngine.Instance.Area(GeometryEngine.Instance.SimplifyAsFeature(g1, true));
// result2 = 100.0 - positive due to correct ring orientation (clockwise)SpatialReference sr = SpatialReferences.WGS84;
Coordinate2D[] coords = new Coordinate2D[] { new Coordinate2D(5, 10), new Coordinate2D(15, 20), new Coordinate2D(25, 10), new Coordinate2D(5, 20) };
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
NonSimpleReason nonSimpleReason;
bool isSimple = GeometryEngine.Instance.GetNonSimpleReason(polyline, out nonSimpleReason);
// isSimple = true;
// nonSimpleReason = NonSimpleReason.IsSimple
double resolution = sr.XYResolution;
coords = new Coordinate2D[] { new Coordinate2D(0, 0), new Coordinate2D(0, 1.8 * resolution), new Coordinate2D(10, 10), new Coordinate2D(0, 5) };
polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
isSimple = GeometryEngine.Instance.GetNonSimpleReason(polyline, out nonSimpleReason);
// isSimple = false
// nonSimpleReason = NonSimpleReason.ShortSegments
coords = new Coordinate2D[] { new Coordinate2D(10, 10), new Coordinate2D(10, 20), new Coordinate2D(40, 20),
new Coordinate2D(40, 10), new Coordinate2D(60, 10), new Coordinate2D(70, 10)};
Polygon polygon = PolygonBuilderEx.CreatePolygon(coords, sr);
isSimple = GeometryEngine.Instance.GetNonSimpleReason(polygon, out nonSimpleReason);
//isSimple = false
//nonSimpleReason = NonSimpleReason.SelfIntersectionsList<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(8, 0),
new Coordinate2D(8, 4),
new Coordinate2D(6, 4),
new Coordinate2D(8, 4),
new Coordinate2D(10, 4),
new Coordinate2D(8, 4)
};
SpatialReference sr = SpatialReferences.WGS84;
// build a line that has segments that cross over each other
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
// polyline.PartCount = 1
ReadOnlyPartCollection parts = polyline.Parts;
ReadOnlySegmentCollection segments = parts[0];
// segments.Count = 5
// note there is a difference between SimpleAsFeature (doesn't detect intersections and overlaps, determines if it's simple enough for gdb storage)
// and SimplifyPolyline (does detect intersections etc)
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polyline, false);
// isSimple = true
// simplify it (with force = false)
// because it has already been deemed 'simple' (previous IsSimpleAsFeature call) no detection of intersections, overlaps occur
Polyline simplePolyline = GeometryEngine.Instance.SimplifyPolyline(polyline, SimplifyType.Planar, false);
// simplePolyline.PartCount = 1
ReadOnlyPartCollection simpleParts = simplePolyline.Parts;
ReadOnlySegmentCollection simpleSegments = simpleParts[0];
// simpleSegments.Count = 5
// simplify it (with force = true)
// detection of intersections, overlaps occur
simplePolyline = GeometryEngine.Instance.SimplifyPolyline(polyline, SimplifyType.Planar, true);
// simplePolyline.PartCount = 3
simpleParts = simplePolyline.Parts;
simpleSegments = simpleParts[0];
// simpleSegments.Count = 1SpatialReference sr = SpatialReferences.WGS84;
Coordinate2D[] coords = new Coordinate2D[] { new Coordinate2D(5, 10), new Coordinate2D(15, 20), new Coordinate2D(25, 10), new Coordinate2D(5, 20) };
Polyline polyline = PolylineBuilderEx.CreatePolyline(coords, sr);
// polyline.IsKnownSimpleOgc = false
// polyline.IsKnownSimple = false
NonSimpleReason nonSimpleReason;
bool isSimple = GeometryEngine.Instance.IsSimpleOgc(polyline, out nonSimpleReason, true);
// isSimple = false
// nonSimpleReason = NonSimpleReason.SelfIntersections
Polyline simplePolyline = GeometryEngine.Instance.SimplifyOgc(polyline) as Polyline;
// simplePolyline.IsKnownSimpleOgc = true
// simplePolyline.IsKnownSimple = true
double resolution = sr.XYResolution;
Coordinate3D[] coords3D = new Coordinate3D[] { new Coordinate3D(0, 0, 0), new Coordinate3D(0, 1.8 * resolution, 0.8 * sr.ZTolerance), new Coordinate3D(10, 10, 1),
new Coordinate3D(0, 5, 1) };
polyline = PolylineBuilderEx.CreatePolyline(coords3D, sr);
isSimple = GeometryEngine.Instance.IsSimpleOgc(polyline, out nonSimpleReason);
// isSimple = false
// nonSimpleReason = NonSimpleReason.ShortSegments
simplePolyline = GeometryEngine.Instance.SimplifyOgc(polyline, true) as Polyline;
// simplePolyline.IsKnownSimpleOgc = true
// simplePolyline.IsKnownSimple = true
coords = new Coordinate2D[] { new Coordinate2D(0, 0), new Coordinate2D(0, 0) };
Multipoint multipoint = MultipointBuilderEx.CreateMultipoint(coords, sr);
isSimple = GeometryEngine.Instance.IsSimpleOgc(multipoint, out nonSimpleReason);
// isSimple = false
// nonSimpleReason = NonSimpleReason.DuplicateVertexvar slices = GeometryEngine.Instance.SlicePolygonIntoEqualParts(polygon, 3, 0, SliceType.Blocks);
// slices.Count = 3
// simple polygon
List<Coordinate2D> list2D = new List<Coordinate2D>();
list2D.Add(new Coordinate2D(1.0, 1.0));
list2D.Add(new Coordinate2D(1.0, 2.0));
list2D.Add(new Coordinate2D(2.0, 2.0));
list2D.Add(new Coordinate2D(2.0, 1.0));
Polygon p = PolygonBuilderEx.CreatePolygon(list2D);
slices = GeometryEngine.Instance.SlicePolygonIntoEqualParts(p, 2, 0, SliceType.Strips);
// slice[0] coordinates - (1.0, 1.0), (1.0, 1.5), (2.0, 1.5), (2.0, 1.0), (1.0, 1.0)
// slice[1] coordinates - (1.0, 1.5), (1.0, 2.0), (2.0, 2.0), (2.0, 1.5), (1.0, 1.5)
slices = GeometryEngine.Instance.SlicePolygonIntoEqualParts(p, 2, Math.PI / 4, SliceType.Strips);
// slice[0] coordinates - (1.0, 1.0), (1.0, 2.0), (2.0, 1.0), (1.0, 1.0)
// slice[1] coordinates - (1.0, 2.0), (2.0, 2.0), (2.0, 1.0), (1.0, 2.0)// define a polyline
MapPoint startPointZ = MapPointBuilderEx.CreateMapPoint(1, 1, 5);
MapPoint endPointZ = MapPointBuilderEx.CreateMapPoint(20, 1, 5);
Polyline polylineZ = PolylineBuilderEx.CreatePolyline(new List<MapPoint>() { startPointZ, endPointZ });
// define a split point
MapPoint splitPointAboveLine = MapPointBuilderEx.CreateMapPoint(10, 10, 10);
bool splitOccurred;
int partIndex;
int segmentIndex;
// split the polyline at the point. dont project the split point onto the line, don't create a new part
var splitPolyline = GeometryEngine.Instance.SplitAtPoint(polylineZ, splitPointAboveLine, false, false, out splitOccurred, out partIndex, out segmentIndex);
// splitOccurred = true
// partIndex = 0
// segmentIndex = 1
// splitPolyline.PointCount = 3
// splitPolyline.PartCount = 1
// splitPolyline coordinates are (1, 1, 5), (10, 10, 10), (20, 1, 5)
// split the polyline at the point. dont project the split point onto the line, do create a new part
splitPolyline = GeometryEngine.Instance.SplitAtPoint(polylineZ, splitPointAboveLine, false, false, out splitOccurred, out partIndex, out segmentIndex);
// splitOccurred = true
// partIndex = 1
// segmentIndex = 0
// splitPolyline.PointCount = 4
// splitPolyline.PartCount = 2
// splitPolyline first part coordinates are (1, 1, 5), (10, 10, 10)
// splitPolyline second part coordinates are (10, 10, 10), (20, 1, 5)
// split the polyline at the point. do project the split point onto the line, don't create a new part
splitPolyline = GeometryEngine.Instance.SplitAtPoint(polylineZ, splitPointAboveLine, false, false, out splitOccurred, out partIndex, out segmentIndex);
// splitOccurred = true
// partIndex = 0
// segmentIndex = 1
// splitPolyline.PointCount = 3
// splitPolyline.PartCount = 1
// splitPolyline coordinates are (1, 1, 5), (10, 10, 5), (20, 1, 5)
// split the polyline at the point. do project the split point onto the line, do create a new part
splitPolyline = GeometryEngine.Instance.SplitAtPoint(polylineZ, splitPointAboveLine, false, false, out splitOccurred, out partIndex, out segmentIndex);
// splitOccurred = true
// partIndex = 1
// segmentIndex = 0
// splitPolyline.PointCount = 4
// splitPolyline.PartCount = 2
// splitPolyline first part coordinates are (1, 1, 5), (10, 10, 5)
// splitPolyline second part coordinates are (10, 10, 5), (20, 1, 5)
//
// try to split with a point that won't split the line - pt extends beyond the line
//
var pointAfterLine = MapPointBuilderEx.CreateMapPoint(50, 1, 10);
splitPolyline = GeometryEngine.Instance.SplitAtPoint(polylineZ, pointAfterLine, false, false, out splitOccurred, out partIndex, out segmentIndex);
// splitOccurred = false
// ignore partIndex, sgementIndex
// splitPolyline is the same as polylineZ
///
/// multipart polygon
///
List<Coordinate3D> coordsZ = new List<Coordinate3D>()
{
new Coordinate3D(10,10,5),
new Coordinate3D(10,20,5),
new Coordinate3D(20,20,5),
new Coordinate3D(20,10,5)
};
List<Coordinate3D> coordsZ_2ndPart = new List<Coordinate3D>()
{
new Coordinate3D(30,20,10),
new Coordinate3D(30,30,10),
new Coordinate3D(35,28,10),
new Coordinate3D(40,30,10),
new Coordinate3D(40,20,10),
};
var builder = new PolygonBuilderEx();
builder.HasZ = true;
builder.AddPart(coordsZ);
builder.AddPart(coordsZ_2ndPart);
Polygon multipart = builder.ToGeometry();
// pointA is closer to the first part of the multipart - the split occurs in the first part
var pointA = MapPointBuilderEx.CreateMapPoint(22, 18, 7);
var splitPolygon = GeometryEngine.Instance.SplitAtPoint(multipart, pointA, false, false, out splitOccurred, out partIndex, out segmentIndex);
// splitPolygon.PointCount = 12
// splitPolygon.PartCount = 2
// splitPolygon first part coordinates (10, 10, 5), (10, 20, 5), (20, 20, 5), (22, 18, 7), (20, 10, 5), (10, 10, 5)
// pointB is midPoint between the 2 parts - no split will occur
var pointB = MapPointBuilderEx.CreateMapPoint(25, 20, 7);
splitPolygon = GeometryEngine.Instance.SplitAtPoint(multipart, pointB, true, false, out splitOccurred, out partIndex, out segmentIndex);
// splitOccurred = false
// ignore partIndex, sgementIndex
// splitPolyline is the same as polylineZ// two disjoint polygons
Envelope env = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(4.0, 4.0), MapPointBuilderEx.CreateMapPoint(8, 8));
Polygon poly1 = PolygonBuilderEx.CreatePolygon(env);
Envelope env2 = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(1.0, 1.0), MapPointBuilderEx.CreateMapPoint(5, 5));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env2);
bool touches = GeometryEngine.Instance.Touches(poly1, poly2); // touches = false
// another polygon that touches the first
Envelope env3 = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(1.0, 1.0), MapPointBuilderEx.CreateMapPoint(4, 4));
Polygon poly3 = PolygonBuilderEx.CreatePolygon(env3);
touches = GeometryEngine.Instance.Touches(poly1, poly3); // touches = true// Not all of the input points are transformed as some of them are outside of the GCS horizon.
Coordinate2D[] inCoords2D = new Coordinate2D[]
{
new Coordinate2D(-1, -1),
new Coordinate2D(-2, -5),
new Coordinate2D(-5, -11),
new Coordinate2D(-10, -19),
new Coordinate2D(-17, -29),
new Coordinate2D(-26, -41),
new Coordinate2D(-37, -5),
new Coordinate2D(-50, -21),
new Coordinate2D(-65, -39),
new Coordinate2D(-82, -9)
};
int arraySize = inCoords2D.Length;
ProjectionTransformation projTrans = ProjectionTransformation.Create(SpatialReferences.WGS84, SpatialReferenceBuilder.CreateSpatialReference(24891));
Coordinate2D[] outCoords2D = new Coordinate2D[arraySize];
// transform and choose to remove the clipped coordinates
int numPointsTransformed = GeometryEngine.Instance.Transform2D(inCoords2D, projTrans, ref outCoords2D, true);
// numPointsTransformed = 4
// outCoords2D.Length = 4
// outCoords2D[0] = {5580417.6876455201, 1328841.2376554986}
// outCoords2D[1] = {3508774.290814558, -568027.23444226268}
// outCoords2D[2] = {1568096.0886155984, -2343435.4394415971}
// outCoords2D[3] = {57325.827391741652, 1095146.8917508761}
// transform and don't remove the clipped coordinates
numPointsTransformed = GeometryEngine.Instance.Transform2D(inCoords2D, projTrans, ref outCoords2D, false);
// numPointsTransformed = 4
// outCoords2D.Length = 10
// outCoords2D[0] = {double.Nan, double.Nan}
// outCoords2D[1] = {double.Nan, double.Nan}
// outCoords2D[2] = {double.Nan, double.Nan}
// outCoords2D[3] = {double.Nan, double.Nan}
// outCoords2D[4] = {double.Nan, double.Nan}
// outCoords2D[5] = {double.Nan, double.Nan}
// outCoords2D[6] = {5580417.6876455201, 1328841.2376554986}
// outCoords2D[7] = {3508774.290814558, -568027.23444226268}
// outCoords2D[8] = {1568096.0886155984, -2343435.4394415971}
// outCoords2D[9] = {57325.827391741652, 1095146.8917508761}// Not all of the input points are transformed as some of them are outside of the GCS horizon.
Coordinate3D[] inCoords3D = new Coordinate3D[]
{
new Coordinate3D(-1, -1, 0),
new Coordinate3D(-2, -5, 1),
new Coordinate3D(-5, -11, 2),
new Coordinate3D(-10, -19, 3),
new Coordinate3D(-17, -29, 4),
new Coordinate3D(-26, -41, 5),
new Coordinate3D(-37, -5, 6),
new Coordinate3D(-50, -21, 7),
new Coordinate3D(-65, -39, 8),
new Coordinate3D(-82, -9, 9)
};
int arraySize = inCoords3D.Length;
ProjectionTransformation projTrans = ProjectionTransformation.Create(SpatialReferences.WGS84, SpatialReferenceBuilder.CreateSpatialReference(24891));
Coordinate3D[] outCoords3D = new Coordinate3D[arraySize];
// transform and choose to remove the clipped coordinates
int numPointsTransformed = GeometryEngine.Instance.Transform3D(inCoords3D, projTrans, ref outCoords3D);
// numPointsTransformed = 4
// outCoords2D.Length = 4
// outCoords2D[0] = {5580417.6876455201, 1328841.2376554986, 7}
// outCoords2D[1] = {3508774.290814558, -568027.23444226268, 8}
// outCoords2D[2] = {1568096.0886155984, -2343435.4394415971, 9}
// outCoords2D[3] = {57325.827391741652, 1095146.8917508761, 10}MapPoint pt1 = MapPointBuilderEx.CreateMapPoint(1.0, 1.0);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2.0, 2.5);
Geometry geometry = GeometryEngine.Instance.Union(pt1, pt2);
Multipoint multipoint = geometry as Multipoint; // multipoint has point count of 2// union two polygons
List<MapPoint> polyPts = new List<MapPoint>();
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 2.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 2.0));
Polygon poly1 = PolygonBuilderEx.CreatePolygon(polyPts);
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(poly1);
Envelope env = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(4.0, 4.0), MapPointBuilderEx.CreateMapPoint(8, 8));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env);
isSimple = GeometryEngine.Instance.IsSimpleAsFeature(poly2);
Geometry g = GeometryEngine.Instance.Union(poly1, poly2);
Polygon polyResult = g as Polygon;// union many polylines
List<Coordinate2D> coords = new List<Coordinate2D>()
{
new Coordinate2D(1, 2), new Coordinate2D(3, 4), new Coordinate2D(4, 2),
new Coordinate2D(5, 6), new Coordinate2D(7, 8), new Coordinate2D(8, 4),
new Coordinate2D(9, 10), new Coordinate2D(11, 12), new Coordinate2D(12, 8),
new Coordinate2D(10, 8), new Coordinate2D(12, 12), new Coordinate2D(14, 10)
};
// create Disjoint lines
List<Polyline> manyLines = new List<Polyline>
{
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[0], coords[1], coords[2]}, SpatialReferences.WGS84),
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[3], coords[4], coords[5]}),
PolylineBuilderEx.CreatePolyline(new List<Coordinate2D>(){coords[6], coords[7], coords[8]})
};
Polyline polyline = GeometryEngine.Instance.Union(manyLines) as Polyline;// union many polygons
List<Coordinate3D> coordsZ = new List<Coordinate3D>()
{
new Coordinate3D(1, 2, 0), new Coordinate3D(3, 4, 1), new Coordinate3D(4, 2, 2),
new Coordinate3D(5, 6, 3), new Coordinate3D(7, 8, 4), new Coordinate3D(8, 4, 5),
new Coordinate3D(9, 10, 6), new Coordinate3D(11, 12, 7), new Coordinate3D(12, 8, 8),
new Coordinate3D(10, 8, 9), new Coordinate3D(12, 12, 10), new Coordinate3D(14, 10, 11)
};
// create polygons
List<Polygon> manyPolygonsZ = new List<Polygon>
{
PolygonBuilderEx.CreatePolygon(new List<Coordinate3D>(){coordsZ[0], coordsZ[1], coordsZ[2]}, SpatialReferences.WGS84),
PolygonBuilderEx.CreatePolygon(new List<Coordinate3D>(){coordsZ[3], coordsZ[4], coordsZ[5]}),
PolygonBuilderEx.CreatePolygon(new List<Coordinate3D>(){coordsZ[6], coordsZ[7], coordsZ[8]})
};
Polygon polygon = GeometryEngine.Instance.Union(manyPolygonsZ) as Polygon;// build a polygon
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0));
Polygon poly = PolygonBuilderEx.CreatePolygon(pts);
// an inner point
MapPoint innerPt = MapPointBuilderEx.CreateMapPoint(1.5, 1.5);
bool within = GeometryEngine.Instance.Within(innerPt, poly); // within = true
// point on a boundary
within = GeometryEngine.Instance.Within(pts[0], poly); // within = false
// an interior line
MapPoint innerPt2 = MapPointBuilderEx.CreateMapPoint(1.25, 1.75);
List<MapPoint> innerLinePts = new List<MapPoint>();
innerLinePts.Add(innerPt);
innerLinePts.Add(innerPt2);
Polyline polyline = PolylineBuilderEx.CreatePolyline(innerLinePts);
within = GeometryEngine.Instance.Within(polyline, poly); // within = true
// a line that crosses the boundary
MapPoint outerPt = MapPointBuilderEx.CreateMapPoint(3, 1.5);
List<MapPoint> crossingLinePts = new List<MapPoint>();
crossingLinePts.Add(innerPt);
crossingLinePts.Add(outerPt);
polyline = PolylineBuilderEx.CreatePolyline(crossingLinePts);
within = GeometryEngine.Instance.Within(polyline, poly); // within = false
// polygon in polygon
Envelope env = EnvelopeBuilderEx.CreateEnvelope(innerPt, innerPt2);
within = GeometryEngine.Instance.Within(env, poly); // within = true 