public static IGeometry GetExample13() { const double CircleDegrees = 360.0; const int CircleDivisions = 36; const double VectorComponentOffset = 0.0000001; const double CircleRadius = 3.0; const double BaseZ = 0.0; const double RotationAngleInDegrees = 89.9; //Extrusion: 3D Circle Polyline Extruded Along 3D Vector Via ConstructExtrudeRelative() IPointCollection pathPointCollection = new PathClass(); IGeometry pathGeometry = pathPointCollection as IGeometry; GeometryUtilities.MakeZAware(pathGeometry); IPoint originPoint = GeometryUtilities.ConstructPoint3D(0, 0, 0); IVector3D upperAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, 10); IVector3D lowerAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, -10); lowerAxisVector3D.XComponent += VectorComponentOffset; IVector3D normalVector3D = upperAxisVector3D.CrossProduct(lowerAxisVector3D) as IVector3D; normalVector3D.Magnitude = CircleRadius; double rotationAngleInRadians = GeometryUtilities.GetRadians(CircleDegrees / CircleDivisions); for (int i = 0; i < CircleDivisions; i++) { normalVector3D.Rotate(-1 * rotationAngleInRadians, upperAxisVector3D); IPoint vertexPoint = GeometryUtilities.ConstructPoint3D(originPoint.X + normalVector3D.XComponent, originPoint.Y + normalVector3D.YComponent, BaseZ); pathPointCollection.AddPoint(vertexPoint, ref _missing, ref _missing); } pathPointCollection.AddPoint(pathPointCollection.get_Point(0), ref _missing, ref _missing); //Rotate Geometry IVector3D rotationAxisVector3D = GeometryUtilities.ConstructVector3D(0, 10, 0); ITransform3D transform3D = pathGeometry as ITransform3D; transform3D.RotateVector3D(rotationAxisVector3D, GeometryUtilities.GetRadians(RotationAngleInDegrees)); //Construct Polyline From Path Vertices IGeometry polylineGeometry = new PolylineClass(); GeometryUtilities.MakeZAware(polylineGeometry); IPointCollection polylinePointCollection = polylineGeometry as IPointCollection; for (int i = 0; i < pathPointCollection.PointCount; i++) { polylinePointCollection.AddPoint(pathPointCollection.get_Point(i), ref _missing, ref _missing); } ITopologicalOperator topologicalOperator = polylineGeometry as ITopologicalOperator; topologicalOperator.Simplify(); //Define Vector To Extrude Along IVector3D extrusionVector3D = GeometryUtilities.ConstructVector3D(10, 0, 5); //Perform Extrusion IConstructMultiPatch constructMultiPatch = new MultiPatchClass(); constructMultiPatch.ConstructExtrudeRelative(extrusionVector3D, polylineGeometry); return(constructMultiPatch as IGeometry); }
public static IGeometry GetExample13() { const double CircleDegrees = 360.0; const int CircleDivisions = 36; const double VectorComponentOffset = 0.0000001; const double CircleRadius = 3.0; const double BaseZ = 0.0; const double RotationAngleInDegrees = 89.9; //Extrusion: 3D Circle Polyline Extruded Along 3D Vector Via ConstructExtrudeRelative() IPointCollection pathPointCollection = new PathClass(); IGeometry pathGeometry = pathPointCollection as IGeometry; GeometryUtilities.MakeZAware(pathGeometry); IPoint originPoint = GeometryUtilities.ConstructPoint3D(0, 0, 0); IVector3D upperAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, 10); IVector3D lowerAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, -10); lowerAxisVector3D.XComponent += VectorComponentOffset; IVector3D normalVector3D = upperAxisVector3D.CrossProduct(lowerAxisVector3D) as IVector3D; normalVector3D.Magnitude = CircleRadius; double rotationAngleInRadians = GeometryUtilities.GetRadians(CircleDegrees / CircleDivisions); for (int i = 0; i < CircleDivisions; i++) { normalVector3D.Rotate(-1 * rotationAngleInRadians, upperAxisVector3D); IPoint vertexPoint = GeometryUtilities.ConstructPoint3D(originPoint.X + normalVector3D.XComponent, originPoint.Y + normalVector3D.YComponent, BaseZ); pathPointCollection.AddPoint(vertexPoint, ref _missing, ref _missing); } pathPointCollection.AddPoint(pathPointCollection.get_Point(0), ref _missing, ref _missing); //Rotate Geometry IVector3D rotationAxisVector3D = GeometryUtilities.ConstructVector3D(0, 10, 0); ITransform3D transform3D = pathGeometry as ITransform3D; transform3D.RotateVector3D(rotationAxisVector3D, GeometryUtilities.GetRadians(RotationAngleInDegrees)); //Construct Polyline From Path Vertices IGeometry polylineGeometry = new PolylineClass(); GeometryUtilities.MakeZAware(polylineGeometry); IPointCollection polylinePointCollection = polylineGeometry as IPointCollection; for (int i = 0; i < pathPointCollection.PointCount; i++) { polylinePointCollection.AddPoint(pathPointCollection.get_Point(i), ref _missing, ref _missing); } ITopologicalOperator topologicalOperator = polylineGeometry as ITopologicalOperator; topologicalOperator.Simplify(); //Define Vector To Extrude Along IVector3D extrusionVector3D = GeometryUtilities.ConstructVector3D(10, 0, 5); //Perform Extrusion IConstructMultiPatch constructMultiPatch = new MultiPatchClass(); constructMultiPatch.ConstructExtrudeRelative(extrusionVector3D, polylineGeometry); return constructMultiPatch as IGeometry; }