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Diffstat (limited to 'src/glu/sgi/libnurbs/interface/glcurveval.h')
| -rw-r--r-- | src/glu/sgi/libnurbs/interface/glcurveval.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/glu/sgi/libnurbs/interface/glcurveval.h b/src/glu/sgi/libnurbs/interface/glcurveval.h new file mode 100644 index 00000000000..c51700ea673 --- /dev/null +++ b/src/glu/sgi/libnurbs/interface/glcurveval.h @@ -0,0 +1,158 @@ +/* +** 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. +*/ + +/* + * glcurveval.h + * + * $Date: 2001/03/17 00:25:40 $ $Revision: 1.1 $ + * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/glcurveval.h,v 1.1 2001/03/17 00:25:40 brianp Exp $ + */ + +#ifndef __gluglcurveval_h_ +#define __gluglcurveval_h_ + +#include "gluos.h" +#include <GL/gl.h> +#include "basiccrveval.h" + +class CurveMap; + +/*for internal evaluator callback stuff*/ +#ifndef IN_MAX_BEZIER_ORDER +#define IN_MAX_BEZIER_ORDER 40 /*XXX should be bigger than machine order*/ +#endif + +#ifndef IN_MAX_DIMENSION +#define IN_MAX_DIMENSION 4 +#endif + +typedef struct curveEvalMachine{ + REAL uprime; //cached previously evaluated uprime + int k; //the dimension + REAL u1; + REAL u2; + int ustride; + int uorder; + REAL ctlpoints[IN_MAX_BEZIER_ORDER*IN_MAX_DIMENSION]; + REAL ucoeff[IN_MAX_BEZIER_ORDER];//cache the polynomial values +} curveEvalMachine; + +class OpenGLCurveEvaluator : public BasicCurveEvaluator { +public: + OpenGLCurveEvaluator(void); + ~OpenGLCurveEvaluator(void); + void range1f(long, REAL *, REAL *); + void domain1f(REAL, REAL); + void addMap(CurveMap *); + + void enable(long); + void disable(long); + void bgnmap1f(long); + void map1f(long, REAL, REAL, long, long, REAL *); + void mapgrid1f(long, REAL, REAL); + void mapmesh1f(long, long, long); + void evalpoint1i(long); + void evalcoord1f(long, REAL); + void endmap1f(void); + + void bgnline(void); + void endline(void); + + void put_vertices_call_back(int flag) + { + output_triangles = flag; + } + void putCallBack(GLenum which, GLvoid (GLAPIENTRY *fn)(...)); + void set_callback_userData(void *data) + { + userData = data; + } + +/*------------------begin for curveEvalMachine------------*/ +curveEvalMachine em_vertex; +curveEvalMachine em_normal; +curveEvalMachine em_color; +curveEvalMachine em_texcoord; +int vertex_flag; //whether there is a vertex map or not +int normal_flag; //whether there is a normal map or not +int color_flag; //whether there is a color map or not +int texcoord_flag; //whether there is a texture map or not + +int global_grid_u0; +int global_grid_u1; +int global_grid_nu; + +void inMap1f(int which, //0: vert, 1: norm, 2: color, 3: tex + int dimension, + REAL ulower, + REAL uupper, + int ustride, + int uorder, + REAL *ctlpoints); + +void inPreEvaluate(int order, REAL vprime, REAL *coeff); +void inDoDomain1(curveEvalMachine *em, REAL u, REAL *retPoint); +void inDoEvalCoord1(REAL u); +void inMapMesh1f(int umin, int umax); + +void (GLAPIENTRY *beginCallBackN) (GLenum type); +void (GLAPIENTRY *endCallBackN) (void); +void (GLAPIENTRY *vertexCallBackN) (const GLfloat *vert); +void (GLAPIENTRY *normalCallBackN) (const GLfloat *normal); +void (GLAPIENTRY *colorCallBackN) (const GLfloat *color); +void (GLAPIENTRY *texcoordCallBackN) (const GLfloat *texcoord); + +void (GLAPIENTRY *beginCallBackData) (GLenum type, void* data); +void (GLAPIENTRY *endCallBackData) (void* data); +void (GLAPIENTRY *vertexCallBackData) (const GLfloat *vert, void* data); +void (GLAPIENTRY *normalCallBackData) (const GLfloat *normal, void* data); +void (GLAPIENTRY *colorCallBackData) (const GLfloat *color, void* data); +void (GLAPIENTRY *texcoordCallBackData) (const GLfloat *texcoord, void* data); + +void* userData; //the opaque pointer for Data callback functions +void beginCallBack(GLenum type, void* data); +void endCallBack(void* data); +void vertexCallBack(const GLfloat *vert, void *data); +void normalCallBack(const GLfloat *normal, void* data); +void colorCallBack(const GLfloat *color, void* data); +void texcoordCallBack(const GLfloat *texcoord, void* data); + + +/*------------------end for curveEvalMachine------------*/ + +private: + int output_triangles; //true 1; false 0 +}; + +#endif /* __gluglcurveval_h_ */ |