# gluUnProject

Definition: | include pGUI.e include opengl.e include glu.e gluUnProject(atom x, y, z, pModelMatrix, pProjMatrix, pViewport, pX, pY, pZ)
Description: | The gluUnProject function maps window coordinates to object coordinates. x,y,z: The window coordinates to be mapped. pModelMatrix: The modelview matrix (as from a glGetDoublev() call). pProjMatrix: The projection matrix (as from a glGetDoublev() call). pViewport: The viewport (as from a glGetIntegerv() call). pX, pY, pZ: The computed object coordinates.
pwa/p2js: | Not supported.
Remarks | A fatal error occurs if the function fails. The gluUnProject function maps the specified window coordinates into object coordinates using pModelMatrix, pProjMatrix, and pViewport. The result is stored in pX, pY, and pZ.
See Also: | glGet, gluProject