glgetclipplane(3G) — IRIX 6.5.3f



glGetClipPlane(3G)             OpenGL Reference             glGetClipPlane(3G)



NAME
     glGetClipPlane - return the coefficients of the specified clipping plane


C SPECIFICATION
     void glGetClipPlane( GLenum plane,
                          GLdouble *equation )


PARAMETERS
     plane     Specifies a clipping plane.  The number of clipping planes
               depends on the implementation, but at least six clipping planes
               are supported.  They are identified by symbolic names of the
               form GLCLIPPLANEi where 0 < i < GLMAXCLIPPLANES.

     equation  Returns four double-precision values that are the coefficients
               of the plane equation of plane in eye coordinates.  The initial
               value is (0, 0, 0, 0).

DESCRIPTION
     glGetClipPlane returns in equation the four coefficients of the plane
     equation for plane.

NOTES
     It is always the case that GLCLIPPLANEi = GLCLIPPLANE0 + i.

     If an error is generated, no change is made to the contents of equation.

ERRORS
     GLINVALIDENUM is generated if plane is not an accepted value.

     GLINVALIDOPERATION is generated if glGetClipPlane is executed between
     the execution of glBegin and the corresponding execution of glEnd.


SEE ALSO
     glClipPlane


















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