glGetClipPlane -- return the coefficients of the specified clipping
void glGetClipPlane(GLenum 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
GL_CLIP_PLANEi where 0 <= i <
Returns four double-precision values that are the coefficients of the
plane equation of plane in eye coordinates.
glGetClipPlane returns in equation the four coefficients of the
plane equation for plane.
It is always the case that GL_CLIP_PLANEi =
GL_CLIP_PLANE0 + i.
If an error is generated, no change is made to the contents of equation.
GL_INVALID_ENUM is generated if plane is not an accepted value.
GL_INVALID_OPERATION is generated if glGetClipPlane is called
between a call to glBegin and the
corresponding call to glEnd.
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© 1995 Uwe Behrens. All rights reserved.