ArcObjects Library Reference (Geometry)  

MultiPatch CoClass

A collection of surface patches.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Extended Error Information

Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.

Interfaces

Interfaces Description
IArea Provides access to members that return properties common to rings and polygons.
IArea3D Provides access to members that return properties common to MultiPatches.
IClone (esriSystem) Provides access to members that control cloning of objects.
IConstructMultiPatch Provides access to members that can be used to construct MultiPatches.
IGeneralMultiPatchInfo Interface to get infomation of a GeneralMultiPatch.
IGeometry Provides access to members that describe properties and behavior of all geometric objects.
IGeometry2 Provides access to members that extend the IGeometry interface with a more sophisticated projection method.
IGeometry3 Provides rapid access to a geometry's extent in the x-y plane.
IGeometry4 Provides access to methods that indicate if a geometry has been changed (edited, projected, etc).
IGeometry5 Provides access to members that extend the IGeometry interface with a more sophisticated projection method.
IGeometryCollection Provides access to members that can be used for accessing, adding and removing individual geometries of a multi-part geometry (Multipoint, Polyline, Polygon, MultiPatch, and GeometryBag).
IHitTest Provides access to members that locate a part of a geometry closest to a point.
IMAware Indicator interface that identifies geometric objects that can have persistent M values attached to their vertices.
IMCollection Provides access to members that control operations on M-aware multipoints, polylines, polygons and multipatches.
IMSnap Provides access to a method that snaps ms of the geometry to the precision of the spatial reference associated with the geometry.
IMultiPatch Provides access to members that identify a MultiPatch and permit controlled access to its parts.
IPersist Defines the single method GetClassID, which is designed to supply the CLSID of an object that can be stored persistently in the system. IPersist is the base interface for three other interfaces: IPersistStorage, IPersistStream, and IPersistFile.
IPersistStream (esriSystem)
IPointCollection Provides access to members that manipulate the points of a Multipoint, Path, Ring, Polyline, Polygon, TriangleFan, TriangleStrip, or MultiPatch.
IPointCollection3 Provides access to members that manipulate the points of a Multipoint.
IPointCollection4 Provides access to members that manipulate the points of a Multipoint, Path, Ring, Polyline, Polygon, TriangleFan, TriangleStrip, or MultiPatch.
IPointIDAware Indicator interface that identifies geometries that can have persistent point ID values attached to coordinates.
IProximityOperator Provides access to members that find the 2D distance between two geometries.
IProximityOperator3D Provides access to members that find the 3D distance between two geometries with Zs.
IRelationalOperator Provides access to members that determine if a certain spatial relationship exists between two geometries.
IRelationalOperator2 Additional relational functions.
IRelationalOperator3D Provides access to members that determine if a certain spatial relationship exists between two geometries with Zs.
IRelationalOperator3D2 Provides access to members that determine if a certain spatial relationship exists between two geometries with Zs.
ISupportErrorInfo Indicates whether a specific interface can return Automation error objects.
ITopologicalOperator Provides access to members for constructing new geometries based upon topological relationships between existing geometries.
ITopologicalOperator2 Provides access to members that extend the ITopologicalOperator interface.
ITopologicalOperator3 Provides additional information on non-simple geometries.
ITransform2D Provides access to methods for transforming geometries using either specific parameters or arbitrary transformation objects (affine transformations, geographic transformations, etc.).
ITransform3D Provides access to methods for transforming 3D geometries using either specific parameters or arbitrary transformation objects.
IVolume Provides access to members that return properties common to MultiPatches.
IXMLSerialize (esriSystem) Provides access to members that XML serialize and deserialize an object to/from XML.
IZAware Indicator interface that identifies geometries that can have persistent Z values attached to their vertices.
IZCollection Provides access to operations on Z-aware geometries.
[C#]

 

        private static object _missing = Type.Missing;

 

        public static IGeometry GetMultiPatchGeometry()

        {

            //Composite: House Composed Of 7 Ring, 1 TriangleStrip, And 1 Triangles Parts

 

            IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();

 

            IMultiPatch multiPatch = multiPatchGeometryCollection as IMultiPatch;

 

            //Base (Exterior Ring)

 

            IPointCollection basePointCollection = new RingClass();

            basePointCollection.AddPoint(ConstructPoint3D(5, 4, 0), ref _missing, ref _missing);

            basePointCollection.AddPoint(ConstructPoint3D(-5, 4, 0), ref _missing, ref _missing);

            basePointCollection.AddPoint(ConstructPoint3D(-5, -4, 0), ref _missing, ref _missing);

            basePointCollection.AddPoint(ConstructPoint3D(5, -4, 0), ref _missing, ref _missing);

            basePointCollection.AddPoint(basePointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(basePointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(basePointCollection as IRing, esriMultiPatchRingType.esriMultiPatchOuterRing);

 

            //Front With Cutaway For Door (Exterior Ring)

 

            IPointCollection frontPointCollection = new RingClass();

            frontPointCollection.AddPoint(ConstructPoint3D(5, 4, 6), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, 4, 0), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, 1, 0), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, 1, 4), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, -1, 4), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, -1, 0), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, -4, 0), ref _missing, ref _missing);

            frontPointCollection.AddPoint(ConstructPoint3D(5, -4, 6), ref _missing, ref _missing);

            frontPointCollection.AddPoint(frontPointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(frontPointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(frontPointCollection as IRing, esriMultiPatchRingType.esriMultiPatchOuterRing);

 

            //Back (Exterior Ring)

 

            IPointCollection backPointCollection = new RingClass();

            backPointCollection.AddPoint(ConstructPoint3D(-5, 4, 6), ref _missing, ref _missing);

            backPointCollection.AddPoint(ConstructPoint3D(-5, -4, 6), ref _missing, ref _missing);

            backPointCollection.AddPoint(ConstructPoint3D(-5, -4, 0), ref _missing, ref _missing);

            backPointCollection.AddPoint(ConstructPoint3D(-5, 4, 0), ref _missing, ref _missing);

            backPointCollection.AddPoint(backPointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(backPointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(backPointCollection as IRing, esriMultiPatchRingType.esriMultiPatchOuterRing);

 

            //Right Side (Ring Group)

 

            //Exterior Ring

 

            IPointCollection rightSideExteriorPointCollection = new RingClass();

            rightSideExteriorPointCollection.AddPoint(ConstructPoint3D(5, 4, 6), ref _missing, ref _missing);

            rightSideExteriorPointCollection.AddPoint(ConstructPoint3D(-5, 4, 6), ref _missing, ref _missing);

            rightSideExteriorPointCollection.AddPoint(ConstructPoint3D(-5, 4, 0), ref _missing, ref _missing);

            rightSideExteriorPointCollection.AddPoint(ConstructPoint3D(5, 4, 0), ref _missing, ref _missing);

            rightSideExteriorPointCollection.AddPoint(rightSideExteriorPointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(rightSideExteriorPointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(rightSideExteriorPointCollection as IRing, esriMultiPatchRingType.esriMultiPatchOuterRing);

 

            //Interior Ring

 

            IPointCollection rightSideInteriorPointCollection = new RingClass();

            rightSideInteriorPointCollection.AddPoint(ConstructPoint3D(1, 4, 4), ref _missing, ref _missing);

            rightSideInteriorPointCollection.AddPoint(ConstructPoint3D(1, 4, 2), ref _missing, ref _missing);

            rightSideInteriorPointCollection.AddPoint(ConstructPoint3D(-1, 4, 2), ref _missing, ref _missing);

            rightSideInteriorPointCollection.AddPoint(ConstructPoint3D(-1, 4, 4), ref _missing, ref _missing);

            rightSideInteriorPointCollection.AddPoint(rightSideInteriorPointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(rightSideInteriorPointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(rightSideInteriorPointCollection as IRing, esriMultiPatchRingType.esriMultiPatchInnerRing);

 

            //Left Side (Ring Group)

 

            //Exterior Ring

 

            IPointCollection leftSideExteriorPointCollection = new RingClass();

            leftSideExteriorPointCollection.AddPoint(ConstructPoint3D(5, -4, 6), ref _missing, ref _missing);

            leftSideExteriorPointCollection.AddPoint(ConstructPoint3D(5, -4, 0), ref _missing, ref _missing);

            leftSideExteriorPointCollection.AddPoint(ConstructPoint3D(-5, -4, 0), ref _missing, ref _missing);

            leftSideExteriorPointCollection.AddPoint(ConstructPoint3D(-5, -4, 6), ref _missing, ref _missing);

            leftSideExteriorPointCollection.AddPoint(leftSideExteriorPointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(leftSideExteriorPointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(leftSideExteriorPointCollection as IRing, esriMultiPatchRingType.esriMultiPatchOuterRing);

 

            //Interior Ring

 

            IPointCollection leftSideInteriorPointCollection = new RingClass();

            leftSideInteriorPointCollection.AddPoint(ConstructPoint3D(1, -4, 4), ref _missing, ref _missing);

            leftSideInteriorPointCollection.AddPoint(ConstructPoint3D(-1, -4, 4), ref _missing, ref _missing);

            leftSideInteriorPointCollection.AddPoint(ConstructPoint3D(-1, -4, 2), ref _missing, ref _missing);

            leftSideInteriorPointCollection.AddPoint(ConstructPoint3D(1, -4, 2), ref _missing, ref _missing);

            leftSideInteriorPointCollection.AddPoint(leftSideInteriorPointCollection.get_Point(0), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(leftSideInteriorPointCollection as IGeometry, ref _missing, ref _missing);

 

            multiPatch.PutRingType(leftSideInteriorPointCollection as IRing, esriMultiPatchRingType.esriMultiPatchInnerRing);

 

            //Roof

 

            IPointCollection roofPointCollection = new TriangleStripClass();

            roofPointCollection.AddPoint(ConstructPoint3D(-5, 4, 6), ref _missing, ref _missing);

            roofPointCollection.AddPoint(ConstructPoint3D(5, 4, 6), ref _missing, ref _missing);

            roofPointCollection.AddPoint(ConstructPoint3D(-5, 0, 9), ref _missing, ref _missing);

            roofPointCollection.AddPoint(ConstructPoint3D(5, 0, 9), ref _missing, ref _missing);

            roofPointCollection.AddPoint(ConstructPoint3D(-5, -4, 6), ref _missing, ref _missing);

            roofPointCollection.AddPoint(ConstructPoint3D(5, -4, 6), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(roofPointCollection as IGeometry, ref _missing, ref _missing);

 

            //Triangular Area Between Roof And Front/Back

 

            IPointCollection triangularAreaPointCollection = new TrianglesClass();

 

            //Area Between Roof And Front

 

            triangularAreaPointCollection.AddPoint(ConstructPoint3D(5, 0, 9), ref _missing, ref _missing);

            triangularAreaPointCollection.AddPoint(ConstructPoint3D(5, 4, 6), ref _missing, ref _missing);

            triangularAreaPointCollection.AddPoint(ConstructPoint3D(5, -4, 6), ref _missing, ref _missing);

 

            //Area Between Roof And Back

 

            triangularAreaPointCollection.AddPoint(ConstructPoint3D(-5, 0, 9), ref _missing, ref _missing);

            triangularAreaPointCollection.AddPoint(ConstructPoint3D(-5, -4, 6), ref _missing, ref _missing);

            triangularAreaPointCollection.AddPoint(ConstructPoint3D(-5, 4, 6), ref _missing, ref _missing);

 

            multiPatchGeometryCollection.AddGeometry(triangularAreaPointCollection as IGeometry, ref _missing, ref _missing);

 

            return multiPatchGeometryCollection as IGeometry;

        }

 

        private static IPoint ConstructPoint3D(double x, double y, double z)

        {

            IPoint point = ConstructPoint2D(x, y);

            point.Z = z;

            return point;

        }


        private static IPoint ConstructPoint2D(double x, double y)

        {

            IPoint point = new PointClass();

            point.PutCoords(x, y);
 

            return point;

        }