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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the SoGLClipPlaneElement class.
|
| Author(s) : Paul S. Strauss
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_GL_CLIP_PLANE_ELEMENT
#define _SO_GL_CLIP_PLANE_ELEMENT
#include <Inventor/elements/SoClipPlaneElement.h>
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoGLClipPlaneElement
//
// Element that adds a clipping plane to the set currently in GL.
// Overrides the virtual methods on SoClipPlaneElement to send the
// clipping plane to GL.
//
// Note that this class relies on SoClipPlaneElement to store the
// plane in the instance.
//
//////////////////////////////////////////////////////////////////////////////
SoEXTENDER class SoGLClipPlaneElement : public SoClipPlaneElement {
SO_ELEMENT_HEADER(SoGLClipPlaneElement);
public:
// Override pop() method so side effects can occur in GL
virtual void pop(SoState *state, const SoElement *prevTopElement);
// Returns the maximum number of concurrent clipping planes
// supported by GL implementation
static int getMaxGLPlanes();
SoINTERNAL public:
// Initializes the SoGLClipPlaneElement class
static void initClass();
protected:
// Adds the clipping plane to an instance. Has GL side effects.
virtual void addToElt(const SbPlane &plane,
const SbMatrix &modelMatrix);
virtual ~SoGLClipPlaneElement();
private:
static int maxGLPlanes; // Holds max number of GL clip planes
// Sends clipping plane in element to GL
void send();
};
#endif /* _SO_GL_CLIP_PLANE_ELEMENT */
|
