ArcObjects Library Reference (Geometry)  

IConstructMultiPatch.ConstructExtrudeFromTo Method

Construct a MultiPatch by extruding a (non-point) geometry between two specified Z values.

[Visual Basic .NET]
Public Sub ConstructExtrudeFromTo ( _
    ByVal fromZ As Double, _
    ByVal toZ As Double, _
    ByVal baseGeom As IGeometry _
)
[C#]
public void ConstructExtrudeFromTo (
    double fromZ,
    double toZ,
    IGeometry baseGeom
);
[C++]
HRESULT ConstructExtrudeFromTo(
  double fromZ,
  double toZ,
  IGeometry* baseGeom
);
[C++]

Parameters

fromZ 
  fromZ is a parameter of type double
toZ 
  toZ is a parameter of type double
baseGeom 

  baseGeom is a parameter of type IGeometry

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

Creates a MultiPatch from a base non-point geometry by extruding the base geometry along the Z-axis from a given FromZ input to a given ToZ input.  The base Z value of the geometry is uniformly set to the FromZ and top Z value is set to a uniform ToZ.  The resulting extrusion is always parallel to the XY-plane on both the base and top.

Remarks

All non-linear segments are treated as linear segments when extrusion is performed.  Only Polylines, Polygons, and Envelopes are allowed as input geometries.

ConstructMultiPatch ExtrudeFromTo Example

[C#]

        private static object _missing = Type.Missing;

        public static IGeometry GetMultiPatchGeometry()

        {

            const double FromZ = 0;

            const double ToZ = 8.5;

 

            //Extrusion: 2D Polygon Composed Of Multiple Square Shaped Exterior Rings And Corresponding Interior Rings,

            //           Extruded To Generate Multiple 3D Buildings With Hollow Interiors Via ConstructExtrudeFromTo()

 

            IPolygon polygon = new PolygonClass();

 

            IGeometryCollection geometryCollection = polygon as IGeometryCollection;

 

            //Exterior Ring 1

 

            IPointCollection exteriorRing1PointCollection = new RingClass();

            exteriorRing1PointCollection.AddPoint(ConstructPoint2D(1, 1), ref _missing, ref _missing);

            exteriorRing1PointCollection.AddPoint(ConstructPoint2D(1, 4), ref _missing, ref _missing);

            exteriorRing1PointCollection.AddPoint(ConstructPoint2D(4, 4), ref _missing, ref _missing);

            exteriorRing1PointCollection.AddPoint(ConstructPoint2D(4, 1), ref _missing, ref _missing);

 

            IRing exteriorRing1 = exteriorRing1PointCollection as IRing;

            exteriorRing1.Close();

 

            geometryCollection.AddGeometry(exteriorRing1 as IGeometry, ref _missing, ref _missing);

 

            //Interior Ring 1

 

            IPointCollection interiorRing1PointCollection = new RingClass();

            interiorRing1PointCollection.AddPoint(ConstructPoint2D(1.5, 1.5), ref _missing, ref _missing);

            interiorRing1PointCollection.AddPoint(ConstructPoint2D(1.5, 3.5), ref _missing, ref _missing);

            interiorRing1PointCollection.AddPoint(ConstructPoint2D(3.5, 3.5), ref _missing, ref _missing);

            interiorRing1PointCollection.AddPoint(ConstructPoint2D(3.5, 1.5), ref _missing, ref _missing);

 

            IRing interiorRing1 = interiorRing1PointCollection as IRing;

            interiorRing1.Close();

 

            geometryCollection.AddGeometry(interiorRing1 as IGeometry, ref _missing, ref _missing);

 

            //Exterior Ring 2

 

            IPointCollection exteriorRing2PointCollection = new RingClass();

            exteriorRing2PointCollection.AddPoint(ConstructPoint2D(1, -1), ref _missing, ref _missing);

            exteriorRing2PointCollection.AddPoint(ConstructPoint2D(4, -1), ref _missing, ref _missing);

            exteriorRing2PointCollection.AddPoint(ConstructPoint2D(4, -4), ref _missing, ref _missing);

            exteriorRing2PointCollection.AddPoint(ConstructPoint2D(1, -4), ref _missing, ref _missing);

 

            IRing exteriorRing2 = exteriorRing2PointCollection as IRing;

            exteriorRing2.Close();

 

            geometryCollection.AddGeometry(exteriorRing2 as IGeometry, ref _missing, ref _missing);

 

            //Interior Ring 2

 

            IPointCollection interiorRing2PointCollection = new RingClass();

            interiorRing2PointCollection.AddPoint(ConstructPoint2D(1.5, -1.5), ref _missing, ref _missing);

            interiorRing2PointCollection.AddPoint(ConstructPoint2D(3.5, -1.5), ref _missing, ref _missing);

            interiorRing2PointCollection.AddPoint(ConstructPoint2D(3.5, -3.5), ref _missing, ref _missing);

            interiorRing2PointCollection.AddPoint(ConstructPoint2D(1.5, -3.5), ref _missing, ref _missing);

 

            IRing interiorRing2 = interiorRing2PointCollection as IRing;

            interiorRing2.Close();

 

            geometryCollection.AddGeometry(interiorRing2 as IGeometry, ref _missing, ref _missing);

 

            //Exterior Ring 3

 

            IPointCollection exteriorRing3PointCollection = new RingClass();

            exteriorRing3PointCollection.AddPoint(ConstructPoint2D(-1, 1), ref _missing, ref _missing);

            exteriorRing3PointCollection.AddPoint(ConstructPoint2D(-4, 1), ref _missing, ref _missing);

            exteriorRing3PointCollection.AddPoint(ConstructPoint2D(-4, 4), ref _missing, ref _missing);

            exteriorRing3PointCollection.AddPoint(ConstructPoint2D(-1, 4), ref _missing, ref _missing);

 

            IRing exteriorRing3 = exteriorRing3PointCollection as IRing;

            exteriorRing3.Close();

 

            geometryCollection.AddGeometry(exteriorRing3 as IGeometry, ref _missing, ref _missing);

 

            //Interior Ring 3

 

            IPointCollection interiorRing3PointCollection = new RingClass();

            interiorRing3PointCollection.AddPoint(ConstructPoint2D(-1.5, 1.5), ref _missing, ref _missing);

            interiorRing3PointCollection.AddPoint(ConstructPoint2D(-3.5, 1.5), ref _missing, ref _missing);

            interiorRing3PointCollection.AddPoint(ConstructPoint2D(-3.5, 3.5), ref _missing, ref _missing);

            interiorRing3PointCollection.AddPoint(ConstructPoint2D(-1.5, 3.5), ref _missing, ref _missing);

 

            IRing interiorRing3 = interiorRing3PointCollection as IRing;

            interiorRing3.Close();

 

            geometryCollection.AddGeometry(interiorRing3 as IGeometry, ref _missing, ref _missing);

           

            //Exterior Ring 4

 

            IPointCollection exteriorRing4PointCollection = new RingClass();

            exteriorRing4PointCollection.AddPoint(ConstructPoint2D(-1, -1), ref _missing, ref _missing);

            exteriorRing4PointCollection.AddPoint(ConstructPoint2D(-1, -4), ref _missing, ref _missing);

            exteriorRing4PointCollection.AddPoint(ConstructPoint2D(-4, -4), ref _missing, ref _missing);

            exteriorRing4PointCollection.AddPoint(ConstructPoint2D(-4, -1), ref _missing, ref _missing);

 

            IRing exteriorRing4 = exteriorRing4PointCollection as IRing;

            exteriorRing4.Close();

 

            geometryCollection.AddGeometry(exteriorRing4 as IGeometry, ref _missing, ref _missing);

 

            //Interior Ring 5

 

            IPointCollection interiorRing4PointCollection = new RingClass();

            interiorRing4PointCollection.AddPoint(ConstructPoint2D(-1.5, -1.5), ref _missing, ref _missing);

            interiorRing4PointCollection.AddPoint(ConstructPoint2D(-1.5, -3.5), ref _missing, ref _missing);

            interiorRing4PointCollection.AddPoint(ConstructPoint2D(-3.5, -3.5), ref _missing, ref _missing);

            interiorRing4PointCollection.AddPoint(ConstructPoint2D(-3.5, -1.5), ref _missing, ref _missing);

 

            IRing interiorRing4 = interiorRing4PointCollection as IRing;

            interiorRing4.Close();

 

            geometryCollection.AddGeometry(interiorRing4 as IGeometry, ref _missing, ref _missing);

           

            IGeometry polygonGeometry = polygon as IGeometry;

 

            ITopologicalOperator topologicalOperator = polygonGeometry as ITopologicalOperator;

            topologicalOperator.Simplify();

 

            IConstructMultiPatch constructMultiPatch = new MultiPatchClass();

            constructMultiPatch.ConstructExtrudeFromTo(FromZ, ToZ, polygonGeometry);

 

            return constructMultiPatch as IGeometry;

        }

        public static IPoint ConstructPoint2D(double x, double y)

        {

            IPoint point = new PointClass();

            point.PutCoords(x, y);

 

            return point;

        }

See Also

IConstructMultiPatch Interface | IExtrude.ExtrudeFromTo Method | IExtrude.ExtrudeAbsolute Method | IConstructMultiPatch Interface | IConstructMultiPatch.ConstructExtrudeRelative Method | IConstructMultiPatch.ConstructExtrude Method | IConstructMultiPatch.ConstructExtrudeAbsolute Method | IConstructMultiPatch.ConstructExtrudeFromTo Method | IExtrude.Extrude Method | IExtrude Interface | IExtrude.ExtrudeBetween Method | IExtrude.ExtrudeAlongLine Method | IConstructMultiPatch.ConstructExtrudeAlongLine Method | IExtrude.ExtrudeRelative Method | IConstructMultiPatch.ConstructExtrudeBetween Method | IGlobeHeightProperties.ExtrusionExpressionString Property

.NET Samples

3D multipatch examples (Code Files: ExtrusionExamples) |