glGetClipPlane.3gl

Name

  glGetClipPlane - return the coefficients of the specified clipping plane

C Specification

  void glGetClipPlane( GLenum plane,
		       GLdouble	*equation )

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_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.

Description

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

Notes

  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.

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

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Last Edited: Mon, May 22, 1995

AFV