Maps the 3D point in world coordinates to a 2D point in normalized screen coordinates (0 <= x,y,z <= 1). The z-screen coordinate represents the homogeneous z coordinate which goes (nonlinearly) from 0 at the near clipping plane to 1 at the far clipping plane.

Maps the 3D point in world coordinates to a 2D point in normalized screen coordinates (0 <= x,y,z <= 1). The z-screen coordinate represents the homogeneous z coordinate which goes (nonlinearly) from 0 at the near clipping plane to 1 at the far clipping plane.

Maps the 3D point in world coordinates to a 2D point in normalized screen coordinates (0 <= x,y,z <= 1). The z-screen coordinate represents the homogeneous z coordinate which goes (nonlinearly) from 0 at the near clipping plane to 1 at the far clipping plane.