glGetClipPlane(3G)glGetClipPlane(3G)NAMEglGetClipPlane - return the coefficients of the specified clipping
plane
SYNOPSIS
void glGetClipPlane(
GLenum plane,
GLdouble *equation );
PARAMETERS
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. Returns four double-precision values
that are the coefficients of the plane equation of plane in eye coordi‐
nates. The initial value is (0, 0, 0, 0).
DESCRIPTIONglGetClipPlane() 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 equa‐
tion.
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 ALSOglClipPlane(3)glGetClipPlane(3G)