ArcGIS Pro 2.7 API Reference Guide
GetPatchType Method
Example 

ArcGIS.Core.Geometry Namespace > Multipatch Class : GetPatchType Method
The index of the patch. Must be greater than or equal to zero and less than PartCount.
Gets the patch type for the specified patch (part).
Syntax
public esriPatchType GetPatchType( 
   int patchIndex
)
Public Function GetPatchType( _
   ByVal patchIndex As Integer _
) As esriPatchType

Parameters

patchIndex
The index of the patch. Must be greater than or equal to zero and less than PartCount.

Return Value

The esriPatchType of the patch.
Exceptions
ExceptionDescription
The patch index must be >= 0.
The patch index must be less than the number of patches (parts) in the multipatch.
Example
// standard geometry properties
bool hasZ = multipatch.HasZ;
bool hasM = multipatch.HasM;
bool hasID = multipatch.HasID;
bool isEmpty = multipatch.IsEmpty;
var sr = multipatch.SpatialReference;

// number of patches (parts)
int patchCount = multiPatch.PartCount;
// number of points
int pointCount = multiPatch.PointCount;

// retrieve the points as MapPoints
ReadOnlyPointCollection points = multipatch.Points;
// or as 3D Coordinates
IReadOnlyList<Coordinate3D> coordinates = multipatch.Copy3DCoordinatesToList();


// multipatch materials
bool hasMaterials = multiPatch.HasMaterials;
int materialCount = multiPatch.MaterialCount;


// multipatch textures
bool hasTextures = multiPatch.HasTextures;
int textureVertexCount = multiPatch.TextureVertexCount;

// normals
bool hasNormals = multiPatch.HasNormals;


// properties for an individual patch (if multipatch.PartCount > 0)
int patchPriority = multiPatch.GetPatchPriority(patchIndex);
esriPatchType patchType = multiPatch.GetPatchType(patchIndex);

// patch points
int patchPointCount = multiPatch.GetPatchPointCount(patchIndex);
int pointStartIndex = multiPatch.GetPatchStartPointIndex(patchIndex);
// the patch Points are then the points in multipatch.Points from pointStartIndex to pointStartIndex + patchPointCount 

// if the multipatch has materials 
if (hasMaterials)
{
  // does the patch have a material?  
  //   materialIndex = -1 if the patch does not have a material; 
  //   0 <= materialIndex < materialCount if the patch does have materials
  int materialIndex = multipatch.GetPatchMaterialIndex(patchIndex);


  // properties for an individual material (if multipatch.MaterialCount > 0)
  var color = multipatch.GetMaterialColor(materialIndex);
  var edgeColor = multipatch.GetMaterialEdgeColor(materialIndex);
  var edgeWidth = multipatch.GetMaterialEdgeWidth(materialIndex);
  var shiness = multipatch.GetMaterialShininess(materialIndex);
  var percent = multipatch.GetMaterialTransparencyPercent(materialIndex);
  var cullBackFace = multipatch.IsMaterialCullBackface(materialIndex);

  // texture properties
  bool isTextured = multipatch.IsMaterialTextured(materialIndex);
  if (isTextured)
  {
    int columnCount = multipatch.GetMaterialTextureColumnCount(materialIndex);
    int rowCount = multipatch.GetMaterialTextureRowCount(materialIndex);
    int bpp = multipatch.GetMaterialTextureBytesPerPixel(materialIndex);
    esriTextureCompressionType compressionType = multipatch.GetMaterialTextureCompressionType(materialIndex);
    var texture = multipatch.GetMaterialTexture(materialIndex);
  }
}

// texture coordinates (if multipatch.HasTextures = true)
if (hasTextures)
{
  int numPatchTexturePoints = multiPatch.GetPatchTextureVertexCount(patchIndex);
  var coordinate2D = multiPatch.GetPatchTextureCoordinate(patchIndex, 0);

  ICollection<Coordinate2D> textureCoordinates = new List<Coordinate2D>(numPatchTexturePoints);
  multiPatch.GetPatchTextureCoordinates(patchIndex, ref textureCoordinates);
}


// patch normals (if multipatch.HasNormals = true)
if (hasNormals)
{
  //  number of normal coordinates = multipatch.GetPatchPointCount(patchIndex)
  Coordinate3D patchNormal = multipatch.GetPatchNormal(patchIndex, 0);
  ICollection<Coordinate3D> normalCoordinates = new List<Coordinate3D>(patchPointCount);
  multipatch.GetPatchNormals(patchIndex, ref normalCoordinates);
}

Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

Multipatch Class
Multipatch Members