The index where the points will be inserted. Must be less than or equal Coords.Count. If the index is less than zero, the point will be added to end of the Coords list.
The index where the points will be inserted. Must be less than or equal Coords.Count. If the index is less than zero, the point will be added to end of the Coords list.
The points is null or one of the points in the collection is empty.
Remarks
If this patch has attributes Ms or IDs, then the attributes will be inserted also.
M and ID will be taken from the point if it has them. Otherwise, default values will be inserted.
Similarly, if this patch has attributes TextureCoords2D or Normals, then default values will be inserted.
The default value is (0, 0) for 2D texture coordinates and (0, 0, 1) for normals.