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/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
*/
/*
* glrenderer.h
*
* $Date: 2001/08/07 17:34:11 $ $Revision: 1.3 $
* $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/glrenderer.h,v 1.3 2001/08/07 17:34:11 brianp Exp $
*/
#ifndef __gluglrenderer_h_
#define __gluglrenderer_h_
#include <GL/gl.h>
#include <GL/glu.h>
#include "nurbstess.h"
#include "glsurfeval.h"
#include "glcurveval.h"
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; }
void (APIENTRY *errorCallback)( GLenum );
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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