/// <summary>
/// Construct multi patch outline
/// </summary>
/// <param name="multiPatchGeometry">multi patch geometry</param>
/// <returns>object implements IGeometryCollection</returns>
public static IGeometryCollection ConstructMultiPatchOutline(IGeometry multiPatchGeometry)
{
IGeometryCollection outlineGeometryCollection = new GeometryBagClass();
IGeometryCollection multiPatchGeometryCollection = multiPatchGeometry as IGeometryCollection;
for (int i = 0; i < multiPatchGeometryCollection.GeometryCount; i++)
{
IGeometry geometry = multiPatchGeometryCollection.get_Geometry(i);
switch (geometry.GeometryType)
{
case esriGeometryType.esriGeometryTriangleStrip:
outlineGeometryCollection.AddGeometryCollection(ConstructTriangleStripOutline(geometry));
break;
case esriGeometryType.esriGeometryTriangleFan:
outlineGeometryCollection.AddGeometryCollection(ConstructTriangleFanOutline(geometry));
break;
case esriGeometryType.esriGeometryTriangles:
outlineGeometryCollection.AddGeometryCollection(ConstructTrianglesOutline(geometry));
break;
case esriGeometryType.esriGeometryRing:
outlineGeometryCollection.AddGeometry(ConstructRingOutline(geometry), ref missing, ref missing);
break;
default:
throw new Exception("Unhandled Geometry Type. " + geometry.GeometryType);
}
}
return(outlineGeometryCollection);
}
public static IGeometryCollection ConstructMultiPatchOutline(IGeometry multiPatchGeometry)
{
IGeometryCollection outlineGeometryCollection = new GeometryBagClass();
IGeometryCollection multiPatchGeometryCollection = multiPatchGeometry as IGeometryCollection;
for (int i = 0; i < multiPatchGeometryCollection.GeometryCount; i++)
{
IGeometry geometry = multiPatchGeometryCollection.get_Geometry(i);
switch(geometry.GeometryType)
{
case (esriGeometryType.esriGeometryTriangleStrip):
outlineGeometryCollection.AddGeometryCollection(ConstructTriangleStripOutline(geometry));
break;
case (esriGeometryType.esriGeometryTriangleFan):
outlineGeometryCollection.AddGeometryCollection(ConstructTriangleFanOutline(geometry));
break;
case (esriGeometryType.esriGeometryTriangles):
outlineGeometryCollection.AddGeometryCollection(ConstructTrianglesOutline(geometry));
break;
case (esriGeometryType.esriGeometryRing):
outlineGeometryCollection.AddGeometry(ConstructRingOutline(geometry), ref _missing, ref _missing);
break;
default:
throw new Exception("Unhandled Geometry Type. " + geometry.GeometryType);
}
}
return outlineGeometryCollection;
}
