GLGETCLIPPLANE(3G) |  | GLGETCLIPPLANE(3G)

# NAME

glGetClipPlane - return the coefficients of the specified clipping plane

# C SPECIFICATION

void glGetClipPlane( GLenum plane,
GLdouble *equation )
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# PARAMETERS

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).

# DESCRIPTION

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

# NOTES

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.

# 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 ALSO

glClipPlane(3G)