Unix/Linux Go Back    


CentOS 7.0 - man page for gluunproject (centos section 3G)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


GLUUNPROJECT(3G)			  OpenGL Manual 			 GLUUNPROJECT(3G)

NAME
       gluUnProject - map window coordinates to object coordinates

C SPECIFICATION
       GLint gluUnProject(GLdouble winX, GLdouble winY, GLdouble winZ, const GLdouble * model,
			  const GLdouble * proj, const GLint * view, GLdouble* objX,
			  GLdouble* objY, GLdouble* objZ);

PARAMETERS
       winX, winY, winZ
	   Specify the window coordinates to be mapped.

       model
	   Specifies the modelview matrix (as from a glGetDoublev() call).

       proj
	   Specifies the projection matrix (as from a glGetDoublev() call).

       view
	   Specifies the viewport (as from a glGetIntegerv() call).

       objX, objY, objZ
	   Returns the computed object coordinates.

DESCRIPTION
       gluUnProject maps the specified window coordinates into object coordinates using model,
       proj, and view. The result is stored in objX, objY, and objZ. A return value of GLU_TRUE
       indicates success; a return value of GLU_FALSE indicates failure.

       To compute the coordinates objX objY objZ, gluUnProject multiplies the normalized device
       coordinates by the inverse of model * proj as follows:

       objX objY objZ W = INV  P  M  2	winX - view  0 view  2 - 1 2  winY - view  1 view  3 - 1
       2  winZ - 1 1INV denotes matrix inversion. W is an unused variable, included for
       consistent matrix notation.

SEE ALSO
       gluProject(), glGet()

COPYRIGHT
       Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI
       Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.

AUTHORS
       opengl.org

opengl.org				    06/10/2014				 GLUUNPROJECT(3G)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 04:49 PM.