- return the coefficients of the specified clipping plane
C SPECIFICATION
PARAMETERS
_param1 Specifies a clipping plane. The number of clip-
ping 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 < GL_MAX_CLIP_PLANES.
_param2 Returns four double-precision values that are the
coefficients of the plane equation of _param1 in
eye coordinates. The initial value is (0, 0, 0,
0).
DESCRIPTION
glGetClipPlane returns in _param2 the four coefficients of
the plane equation for _param1.
NOTES
It is always the case that GL_CLIP_PLANEi = GL_CLIP_PLANE0
+ i.
If an error is generated, no change is made to the con-
tents of _param2.
ERRORS
GL_INVALID_ENUM is generated if _param1 is not an accepted
value.
GL_INVALID_OPERATION is generated if glGetClipPlane is
executed between the execution of glBegin and the corre-
sponding execution of glEnd.
SEE ALSO
glClipPlane
1