gluUnProject man page on RedHat
[printable version]
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 1 INV denotes matrix
inversion. W is an unused variable, included for consistent matrix
notation.
SEE ALSO
gluProject(), glGet()
COPYRIGHT
Copyright © 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 03/16/2013 GLUUNPROJECT(3G)
[top]
List of man pages available for RedHat
Copyright (c) for man pages and the logo by the respective OS vendor.
For those who want to learn more, the polarhome community provides shell access and support.
[legal]
[privacy]
[GNU]
[policy]
[cookies]
[netiquette]
[sponsors]
[FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
|
|
Vote for polarhome
|
