OpenGL-2D_2_3D

2075 단어 OpenGL
OpenGL

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.

See Also


glGet , glGetDoublev , glGetIntegerv , gluProject

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