SoGLTextureCoordinateElement.h

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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:
 * 
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 *  For further information regarding this notice, see: 
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/*
 * 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:
 |      Subclass of TextureCoordinateElement that also support GL
 |   rendering-- it has send() methods, and has a getType() that can
 |   return NONE, meaning shapes don't have to do anything to get
 |   texture coordinates generated for them (the GL's TexGen will do
 |   it for them).
 |
 |   Author(s)          : Gavin Bell
 |
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 _______________________________________________________________________
 */
 
#ifndef  _SO_GL_TEXTURE_COORDINATE_ELEMENT
#define  _SO_GL_TEXTURE_COORDINATE_ELEMENT
 
#include <Inventor/SbLinear.h>
#include <Inventor/elements/SoTextureCoordinateElement.h>
 
 
typedef void SoTexCoordTexgenCB(void *userdata);
 
SoEXTENDER class INVENTOR_API SoGLTextureCoordinateElement :
                                public SoTextureCoordinateElement {
 
    SO_ELEMENT_HEADER(SoGLTextureCoordinateElement);
 
  public:
    virtual void        init(SoState *state);
 
    static void         setTexGen(SoState *state, SoNode *node, 
            SoTexCoordTexgenCB *texGenFunc, void *texGenData = NULL,
            SoTextureCoordinateFunctionCB *func = NULL,
            void *funcData = NULL);
 
    virtual CoordType   getType() const;
 
    static const SoGLTextureCoordinateElement * getInstance(SoState *state);
 
 
    void                send(int index) const;
 
    virtual void        push(SoState *state);
 
    virtual void        pop(SoState *state, const SoElement *prevTopElement);
 
  SoINTERNAL public:
    static void         initClass();
 
  protected:
    void        setElt(SoTexCoordTexgenCB *function,
                       void *userData = NULL);
 
    virtual ~SoGLTextureCoordinateElement();
 
  private:
    SoTexCoordTexgenCB  *texgenCB;
    void                *texgenCBData;
    SoState             *copiedFromParent;
};
 
#endif /* _SO_GL_TEXTURE_COORDINATE_ELEMENT */