This function behaves exactly as its counterpart without the insertionMat parameter. Entities contained in a block will receive the block transformation in the insertionMat parameter.

Public Function GetObjectSnapPoints(
    snapMode As ObjectSnapModes, 
    gsSelectionMark As Integer, 
    pickPoint As Point3d, 
    lastPoint As Point3d, 
    viewTransform As Matrix3d, 
    snapPoints As Point3dCollection, 
    geometryIds As IntegerCollection, 
    insertionMat As Matrix3d
) As void

public void GetObjectSnapPoints(
    ObjectSnapModes snapMode, 
    int gsSelectionMark, 
    Point3d pickPoint, 
    Point3d lastPoint, 
    Matrix3d viewTransform, 
    Point3dCollection snapPoints, 
    IntegerCollection geometryIds, 
    Matrix3d insertionMat
);