glGetClipPlane function

The glGetClipPlane function returns the coefficients of the specified clipping plane.

Syntax

void WINAPI glGetClipPlane(
   GLenum   plane,
   GLdouble *equation
);

plane: 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.

This function does not return a value.

The following error codes can be retrieved by the glGetError function.

Name	Meaning
GL_INVALID_ENUM	plane was not an accepted value.
GL_INVALID_OPERATION	The function was called between a call to glBegin and the corresponding call to glEnd.

The glGetClipPlane function returns in equation the four coefficients of the plane equation for plane.

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.

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Gl.h
Library	Opengl32.lib
DLL	Opengl32.dll