+++ /dev/null
-/*
- * 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.
- */
-
-/*
- * glsurfeval.h
- *
- */
-
-#ifndef __gluglsurfeval_h_
-#define __gluglsurfeval_h_
-
-#include "basicsurfeval.h"
-#include "bezierPatchMesh.h" //in case output triangles
-#include <GL/gl.h>
-#include <GL/glu.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; coord[0] = 0; coord[1] = 0; point[0] = 0; point[1] = 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();
- virtual ~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 );
-
-#ifdef _WIN32
- void putCallBack(GLenum which, void (GLAPIENTRY *fn)() );
-#else
- void putCallBack(GLenum which, _GLUfuncptr fn );
-#endif
-
- 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_ */
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