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 GL_CLIP_PLANEi where 0 < i < GL_MAX_CLIP_PLANES.
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 GL_CLIP_PLANEi = GL_CLIP_PLANE0 + i.
If an error is generated, no change is made to the contents of equation.
ERRORS
GL_INVALID_ENUM is generated if plane is not an accepted value.
GL_INVALID_OPERATION is generated if glGetClipPlane is executed between
the execution of glBegin and the corresponding execution of glEnd.
SEE ALSO
glClipPlane
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