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/*
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice including the dates of first publication and
* either this permission notice or a reference to
* http://oss.sgi.com/projects/FreeB/
* shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of Silicon Graphics, Inc.
* shall not be used in advertising or otherwise to promote the sale, use or
* other dealings in this Software without prior written authorization from
* Silicon Graphics, Inc.
*/
/*
* glrenderer.h
*
*/
#ifndef __gluglrenderer_h_
#define __gluglrenderer_h_
#include <GL/gl.h>
#include <GL/glu.h>
#include "nurbstess.h"
#include "glsurfeval.h"
#include "glcurveval.h"
extern "C" {
typedef void (APIENTRY *errorCallbackType)( GLenum );
}
class GLUnurbs : public NurbsTessellator {
public:
GLUnurbs( void );
void loadGLMatrices( void );
void useGLMatrices( const GLfloat modelMatrix[16],
const GLfloat projMatrix[16],
const GLint viewport[4] );
void setSamplingMatrixIdentity( void );
void errorHandler( int );
void bgnrender( void );
void endrender( void );
void setautoloadmode( INREAL value )
{
if (value) autoloadmode = GL_TRUE;
else autoloadmode = GL_FALSE;
}
GLboolean getautoloadmode( void ) { return autoloadmode; }
errorCallbackType errorCallback;
void postError( int which )
{ if (errorCallback) (errorCallback)( (GLenum)which ); }
#ifdef _WIN32
void putSurfCallBack(GLenum which, void (GLAPIENTRY *fn)() )
#else
void putSurfCallBack(GLenum which, _GLUfuncptr fn )
#endif
{
curveEvaluator.putCallBack(which, fn);
surfaceEvaluator.putCallBack(which, fn);
}
int get_vertices_call_back()
{
return surfaceEvaluator.get_vertices_call_back();
}
void put_vertices_call_back(int flag)
{
surfaceEvaluator.put_vertices_call_back(flag);
}
int get_callback_auto_normal()
{
return surfaceEvaluator.get_callback_auto_normal();
}
void put_callback_auto_normal(int flag)
{
surfaceEvaluator.put_callback_auto_normal(flag);
}
void setNurbsCallbackData(void* userData)
{
curveEvaluator.set_callback_userData(userData);
surfaceEvaluator.set_callback_userData(userData);
}
//for LOD
void LOD_eval_list(int level)
{
surfaceEvaluator.LOD_eval_list(level);
}
//NEWCALLBACK
int is_callback()
{
return callbackFlag;
}
void put_callbackFlag(int flag)
{
callbackFlag = flag;
surfaceEvaluator.put_vertices_call_back(flag);
curveEvaluator.put_vertices_call_back(flag);
}
private:
GLboolean autoloadmode;
OpenGLSurfaceEvaluator surfaceEvaluator;
OpenGLCurveEvaluator curveEvaluator;
void loadSamplingMatrix( const GLfloat vmat[4][4],
const GLint viewport[4] );
void loadCullingMatrix( GLfloat vmat[4][4] );
static void grabGLMatrix( GLfloat vmat[4][4] );
static void transform4d( GLfloat A[4], GLfloat B[4],
GLfloat mat[4][4] );
static void multmatrix4d( GLfloat n[4][4], const GLfloat left[4][4],
const GLfloat right[4][4] );
int callbackFlag;
};
#endif /* __gluglrenderer_h_ */
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