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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/glsurfeval.h')
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diff --git a/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/glsurfeval.h b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/glsurfeval.h new file mode 100644 index 000000000..1c4b0dfe0 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/glsurfeval.h @@ -0,0 +1,404 @@ +/* +** 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. +*/ + +/* + * glsurfeval.h + * + * $Date: 2004/03/14 08:29:10 $ $Revision: 1.1.1.4 $ + * $Header: /cvs/xorg/xc/extras/ogl-sample/main/gfx/lib/glu/libnurbs/interface/glsurfeval.h,v 1.1.1.4 2004/03/14 08:29:10 eich Exp $ + */ + +#ifndef __gluglsurfeval_h_ +#define __gluglsurfeval_h_ + +#include "basicsurfeval.h" +#include "bezierPatchMesh.h" //in case output triangles +#include "GL/gl.h" + +class SurfaceMap; +class OpenGLSurfaceEvaluator; +class StoredVertex; + +#define TYPECOORD 1 +#define TYPEPOINT 2 + +/* Cache up to 3 vertices from tmeshes */ +#define VERTEX_CACHE_SIZE 3 + +/*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 surfEvalMachine{ + REAL uprime;//cached previusly evaluated uprime. + REAL vprime; + int k; /*the dimension*/ + REAL u1; + REAL u2; + int ustride; + int uorder; + REAL v1; + REAL v2; + int vstride; + int vorder; + REAL ctlPoints[IN_MAX_BEZIER_ORDER*IN_MAX_BEZIER_ORDER*IN_MAX_DIMENSION]; + REAL ucoeff[IN_MAX_BEZIER_ORDER]; /*cache the polynomial values*/ + REAL vcoeff[IN_MAX_BEZIER_ORDER]; + REAL ucoeffDeriv[IN_MAX_BEZIER_ORDER]; /*cache the polynomial derivatives*/ + REAL vcoeffDeriv[IN_MAX_BEZIER_ORDER]; +} surfEvalMachine; + + + +class StoredVertex { +public: + StoredVertex() { type = 0; } + ~StoredVertex(void) {} + void saveEvalCoord(REAL x, REAL y) + {coord[0] = x; coord[1] = y; type = TYPECOORD; } + void saveEvalPoint(long x, long y) + {point[0] = x; point[1] = y; type = TYPEPOINT; } + void invoke(OpenGLSurfaceEvaluator *eval); + +private: + int type; + REAL coord[2]; + long point[2]; +}; + +class OpenGLSurfaceEvaluator : public BasicSurfaceEvaluator { +public: + OpenGLSurfaceEvaluator(); + ~OpenGLSurfaceEvaluator( void ); + void polymode( long style ); + void range2f( long, REAL *, REAL * ); + void domain2f( REAL, REAL, REAL, REAL ); + void addMap( SurfaceMap * ) { } + + void enable( long ); + void disable( long ); + void bgnmap2f( long ); + void map2f( long, REAL, REAL, long, long, + REAL, REAL, long, long, REAL * ); + void mapgrid2f( long, REAL, REAL, long, REAL, REAL ); + void mapmesh2f( long, long, long, long, long ); + void evalcoord2f( long, REAL, REAL ); + void evalpoint2i( long, long ); + void endmap2f( void ); + + void bgnline( void ); + void endline( void ); + void bgnclosedline( void ); + void endclosedline( void ); + void bgntmesh( void ); + void swaptmesh( void ); + void endtmesh( void ); + void bgnqstrip( void ); + void endqstrip( void ); + + void bgntfan( void ); + void endtfan( void ); + void evalUStrip(int n_upper, REAL v_upper, REAL* upper_val, + int n_lower, REAL v_lower, REAL* lower_val); + void evalVStrip(int n_left, REAL u_left, REAL* left_val, + int n_right, REAL u_right, REAL* right_val); + + void coord2f( REAL, REAL ); + void point2i( long, long ); + + void newtmeshvert( REAL, REAL ); + void newtmeshvert( long, long ); + + void putCallBack(GLenum which, GLvoid (GLAPIENTRY *fn)(...)); + int get_vertices_call_back() + { + return output_triangles; + } + void put_vertices_call_back(int flag) + { + output_triangles = flag; + } + + void put_callback_auto_normal(int flag) + { + callback_auto_normal = flag; + } + + int get_callback_auto_normal() + { + return callback_auto_normal; + } + + void set_callback_userData(void* data) + { + userData = data; + } + + /**************begin for LOD_eval_list***********/ + void LOD_eval_list(int level); + + + + +private: + StoredVertex *vertexCache[VERTEX_CACHE_SIZE]; + int tmeshing; + int which; + int vcount; + + GLint gl_polygon_mode[2];/*to save and restore so that + *no side effect + */ + bezierPatchMesh *global_bpm; //for output triangles + int output_triangles; //true 1 or false 0 + + + + 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 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); + + + void* userData; //the opaque pointer for Data callback functions. + + /*LOD evaluation*/ + void LOD_triangle(REAL A[2], REAL B[2], REAL C[2], + int level); + void LOD_eval(int num_vert, REAL* verts, int type, int level); + + int LOD_eval_level; //set by LOD_eval_list() + + /*************begin for internal evaluators*****************/ + + /*the following global variables are only defined in this file. + *They are used to cache the precomputed Bezier polynomial values. + *These calues may be used consecutively in which case we don't have + *recompute these values again. + */ + int global_uorder; /*store the uorder in the previous evaluation*/ + int global_vorder; /*store the vorder in the previous evaluation*/ + REAL global_uprime; + REAL global_vprime; + REAL global_vprime_BV; + REAL global_uprime_BU; + int global_uorder_BV; /*store the uorder in the previous evaluation*/ + int global_vorder_BV; /*store the vorder in the previous evaluation*/ + int global_uorder_BU; /*store the uorder in the previous evaluation*/ + int global_vorder_BU; /*store the vorder in the previous evaluation*/ + + REAL global_ucoeff[IN_MAX_BEZIER_ORDER]; /*cache the polynomial values*/ + REAL global_vcoeff[IN_MAX_BEZIER_ORDER]; + REAL global_ucoeffDeriv[IN_MAX_BEZIER_ORDER]; /*cache the polynomial derivatives*/ + REAL global_vcoeffDeriv[IN_MAX_BEZIER_ORDER]; + + REAL global_BV[IN_MAX_BEZIER_ORDER][IN_MAX_DIMENSION]; + REAL global_PBV[IN_MAX_BEZIER_ORDER][IN_MAX_DIMENSION]; + REAL global_BU[IN_MAX_BEZIER_ORDER][IN_MAX_DIMENSION]; + REAL global_PBU[IN_MAX_BEZIER_ORDER][IN_MAX_DIMENSION]; + REAL* global_baseData; + + int global_ev_k; /*the dimension*/ + REAL global_ev_u1; + REAL global_ev_u2; + int global_ev_ustride; + int global_ev_uorder; + REAL global_ev_v1; + REAL global_ev_v2; + int global_ev_vstride; + int global_ev_vorder; + REAL global_ev_ctlPoints[IN_MAX_BEZIER_ORDER*IN_MAX_BEZIER_ORDER*IN_MAX_DIMENSION]; + + REAL global_grid_u0; + REAL global_grid_u1; + int global_grid_nu; + REAL global_grid_v0; + REAL global_grid_v1; + int global_grid_nv; + +/*functions*/ + void inDoDomain2WithDerivs(int k, REAL u, REAL v, + REAL u1, REAL u2, int uorder, + REAL v1, REAL v2, int vorder, + REAL *baseData, + REAL *retPoint, REAL *retdu, REAL *retdv); + void inPreEvaluate(int order, REAL vprime, REAL *coeff); + void inPreEvaluateWithDeriv(int order, REAL vprime, REAL *coeff, REAL *coeffDeriv); + void inComputeFirstPartials(REAL *p, REAL *pu, REAL *pv); + void inComputeNormal2(REAL *pu, REAL *pv, REAL *n); + void inDoEvalCoord2(REAL u, REAL v, + REAL *retPoint, REAL *retNormal); + void inDoEvalCoord2NOGE(REAL u, REAL v, + REAL *retPoint, REAL *retNormal); + void inMap2f(int k, + REAL ulower, + REAL uupper, + int ustride, + int uorder, + REAL vlower, + REAL vupper, + int vstride, + int vorder, + REAL *ctlPoints); + + void inMapGrid2f(int nu, REAL u0, REAL u1, + int nv, REAL v0, REAL v1); + + void inEvalMesh2(int lowU, int lowV, int highU, int highV); + void inEvalPoint2(int i, int j); + void inEvalCoord2f(REAL u, REAL v); + +void inEvalULine(int n_points, REAL v, REAL* u_vals, + int stride, REAL ret_points[][3], REAL ret_normals[][3]); + +void inEvalVLine(int n_points, REAL u, REAL* v_vals, + int stride, REAL ret_points[][3], REAL ret_normals[][3]); + +void inEvalUStrip(int n_upper, REAL v_upper, REAL* upper_val, + int n_lower, REAL v_lower, REAL* lower_val + ); +void inEvalVStrip(int n_left, REAL u_left, REAL* left_val, int n_right, REAL u_right, REAL* right_val); + +void inPreEvaluateBV(int k, int uorder, int vorder, REAL vprime, REAL *baseData); +void inPreEvaluateBU(int k, int uorder, int vorder, REAL uprime, REAL *baseData); +void inPreEvaluateBV_intfac(REAL v ) + { + inPreEvaluateBV(global_ev_k, global_ev_uorder, global_ev_vorder, (v-global_ev_v1)/(global_ev_v2-global_ev_v1), global_ev_ctlPoints); + } + +void inPreEvaluateBU_intfac(REAL u) + { + inPreEvaluateBU(global_ev_k, global_ev_uorder, global_ev_vorder, (u-global_ev_u1)/(global_ev_u2-global_ev_u1), global_ev_ctlPoints); + } + +void inDoDomain2WithDerivsBV(int k, REAL u, REAL v, + REAL u1, REAL u2, int uorder, + REAL v1, REAL v2, int vorder, + REAL *baseData, + REAL *retPoint, REAL* retdu, REAL *retdv); + +void inDoDomain2WithDerivsBU(int k, REAL u, REAL v, + REAL u1, REAL u2, int uorder, + REAL v1, REAL v2, int vorder, + REAL *baseData, + REAL *retPoint, REAL* retdu, REAL *retdv); + + +void inDoEvalCoord2NOGE_BV(REAL u, REAL v, + REAL *retPoint, REAL *retNormal); + +void inDoEvalCoord2NOGE_BU(REAL u, REAL v, + REAL *retPoint, REAL *retNormal); + +void inBPMEval(bezierPatchMesh* bpm); +void inBPMListEval(bezierPatchMesh* list); + +/*-------------begin for surfEvalMachine -------------*/ +surfEvalMachine em_vertex; +surfEvalMachine em_normal; +surfEvalMachine em_color; +surfEvalMachine em_texcoord; + +int auto_normal_flag; //whether to output normla or not in callback + //determined by GL_AUTO_NORMAL and callback_auto_normal +int callback_auto_normal; //GLU_CALLBACK_AUTO_NORMAL_EXT +int vertex_flag; +int normal_flag; +int color_flag; +int texcoord_flag; + +void inMap2fEM(int which, //0:vert,1:norm,2:color,3:tex + int dimension, + REAL ulower, + REAL uupper, + int ustride, + int uorder, + REAL vlower, + REAL vupper, + int vstride, + int vorder, + REAL *ctlPoints); + +void inDoDomain2WithDerivsEM(surfEvalMachine *em, REAL u, REAL v, + REAL *retPoint, REAL *retdu, REAL *retdv); +void inDoDomain2EM(surfEvalMachine *em, REAL u, REAL v, + REAL *retPoint); + void inDoEvalCoord2EM(REAL u, REAL v); + +void inBPMEvalEM(bezierPatchMesh* bpm); +void inBPMListEvalEM(bezierPatchMesh* list); + +/*-------------end for surfEvalMachine -------------*/ + + + /*************end for internal evaluators*****************/ + +}; + +inline void StoredVertex::invoke(OpenGLSurfaceEvaluator *eval) +{ + switch(type) { + case TYPECOORD: + eval->coord2f(coord[0], coord[1]); + break; + case TYPEPOINT: + eval->point2i(point[0], point[1]); + break; + default: + break; + } +} + +#endif /* __gluglsurfeval_h_ */ |