glGetClipPlane
[New
- Windows 95, OEM Service Release 2]
The glGetClipPlane
function returns the coefficients of the specified clipping plane.
void glGetClipPlane(
|
GLenum plane, |
|
|
GLdouble * equation |
|
|
); |
|
Parameters
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_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.
Remarks
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.
Error Codes
The following
are the error codes generated and their conditions.
|
Error
Code |
Condition |
|
GL_INVALID_ENUM
|
plane was not an accepted value. |
|
GL_INVALID_OPERATION
|
glGetClipPlane was called between a call to glBegin and the
corresponding call to glEnd. |
See Also