Section: Misc. Reference Manual Pages (3G)
- return the coefficients of the specified clipping plane
GLdouble *equation )
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_PLANE$i$
where 0 ≤ $ i $ < GL_MAX_CLIP_PLANES.
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).
returns in equation
the four coefficients of the plane equation
It is always the case that GL_CLIP_PLANE
$i$ = GL_CLIP_PLANE0
If an error is generated,
no change is made to the contents of equation.
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.