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;
}
