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glGetClipPlane - return the coefficients of the specified clipping plane
void glGetClipPlane( GLenum plane,
GLdouble *equation )
eqn not supported
- 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_PLANE$i$ 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).
glGetClipPlane
returns in equation the four coefficients of the plane equation for plane.
It is always the case that GL_CLIP_PLANE$i$ = 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 executed between the execution of glBegin
and the corresponding execution of glEnd.
glClipPlane(3G)
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