gluUnProject
The gluUnProject function maps window coordinates to object coordinates.
int gluUnProject(
GLdouble winx, GLdouble winy, GLdouble winz, const GLdouble modelMatrix[16], const GLdouble projMatrix[16], const GLint viewport[4], GLdouble *objx, GLdouble *objy, GLdouble *objz);
Parameters
- winx, winy, winz
The window coordinates to be mapped. - modelMatrix
The modelview matrix (as from a glGetDoublev call). - projMatrix
The projection matrix (as from a glGetDoublev call). - viewport
The viewport (as from a glGetIntegerv call). - objx, objy, objz
The computed object coordinates.
Return Values
If the function succeeds, the return value is GL_TRUE.
If the function fails, the return value is GL_FALSE.
Remarks
The gluUnProject function maps the specified window coordinates into object coordinates using modelMatrix, projMatrix, and viewport. The result is stored in objx, objy, and objz.
Requirements
** Windows NT/2000:** Requires Windows NT 3.5 or later.
** Windows 95/98:** Requires Windows 95 or later. Available as a redistributable for Windows 95.
** Header:** Declared in Glu.h.
** Library:** Use Glu32.lib.