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Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/interface/glsurfeval.cc')
| -rw-r--r-- | mesalib/src/glu/sgi/libnurbs/interface/glsurfeval.cc | 1293 |
1 files changed, 0 insertions, 1293 deletions
diff --git a/mesalib/src/glu/sgi/libnurbs/interface/glsurfeval.cc b/mesalib/src/glu/sgi/libnurbs/interface/glsurfeval.cc deleted file mode 100644 index b5bfab1e2..000000000 --- a/mesalib/src/glu/sgi/libnurbs/interface/glsurfeval.cc +++ /dev/null @@ -1,1293 +0,0 @@ -/* -** 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.c++ - * - */ - -/* Polynomial Evaluator Interface */ -#include "gluos.h" -#include <stdio.h> -#include "glimports.h" -#include "glrenderer.h" -#include "glsurfeval.h" -#include "nurbsconsts.h" -#include "bezierPatchMesh.h" - - -//extern int surfcount; -//int surfcount=0; - -/*#define USE_INTERNAL_EVAL*/ //use internal evaluator - -/*whether do evaluation or not*/ -/*#define NO_EVALUATION*/ - -//#define USE_LOD //for LOD test, have to turn on USE_LOD in insurfeval.c++ too - -/*for statistics*/ -//#define STATISTICS -#ifdef STATISTICS -static int STAT_num_of_triangles=0; -static int STAT_num_of_eval_vertices=0; -static int STAT_num_of_quad_strips=0; -#endif - -/*for output triangles*/ -/*#define OUTPUT_TRIANGLES*/ - - -/*#define FOR_CHRIS*/ -#ifdef FOR_CHRIS -extern "C" { void evalUStripExt(int n_upper, REAL v_upper, REAL* upper_val, - int n_lower, REAL v_lower, REAL* lower_val);} - -extern "C" { void evalVStripExt(int n_left, REAL u_left, REAL* left_val, - int n_right, REAL u_right, REAL* right_val); - } -#endif - - -/**************begin for LOD_eval_list***********/ -void OpenGLSurfaceEvaluator::LOD_eval_list(int level) -{ - if(level == 0) - LOD_eval_level = 1; - else if(level == 1) - LOD_eval_level = 2; - else if(level == 2) - LOD_eval_level = 4; - else - LOD_eval_level = 8; - - inBPMListEvalEM(global_bpm); -} - - -OpenGLSurfaceEvaluator::OpenGLSurfaceEvaluator() -{ - int i; - - for (i=0; i<VERTEX_CACHE_SIZE; i++) { - vertexCache[i] = new StoredVertex; - } - tmeshing = 0; - which = 0; - vcount = 0; - - global_uorder = 0; - global_vorder = 0; - global_uprime = -1.0; - global_vprime = -1.0; - global_vprime_BV = -1.0; - global_uprime_BU = -1.0; - global_uorder_BU = 0; - global_vorder_BU = 0; - global_uorder_BV = 0; - global_vorder_BV = 0; - global_baseData = NULL; - - global_bpm = NULL; - output_triangles = 0; //don't output triangles by default - - //no default callback functions - beginCallBackN = NULL; - endCallBackN = NULL; - vertexCallBackN = NULL; - normalCallBackN = NULL; - colorCallBackN = NULL; - texcoordCallBackN = NULL; - beginCallBackData = NULL; - endCallBackData = NULL; - vertexCallBackData = NULL; - normalCallBackData = NULL; - colorCallBackData = NULL; - texcoordCallBackData = NULL; - - userData = NULL; - - auto_normal_flag = 0; - callback_auto_normal = 0; //default of GLU_CALLBACK_AUTO_NORMAL is 0 - vertex_flag = 0; - normal_flag = 0; - color_flag = 0; - texcoord_flag = 0; - - em_vertex.uprime = -1.0; - em_vertex.vprime = -1.0; - em_normal.uprime = -1.0; - em_normal.vprime = -1.0; - em_color.uprime = -1.0; - em_color.vprime = -1.0; - em_texcoord.uprime = -1.0; - em_texcoord.vprime = -1.0; - -#ifdef USE_LOD - LOD_eval_level = 1; -#endif -} - -OpenGLSurfaceEvaluator::~OpenGLSurfaceEvaluator() -{ - for (int ii= 0; ii< VERTEX_CACHE_SIZE; ii++) { - delete vertexCache[ii]; - vertexCache[ii]= 0; - } -} - -/*--------------------------------------------------------------------------- - * disable - turn off a map - *--------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::disable(long type) -{ - glDisable((GLenum) type); -} - -/*--------------------------------------------------------------------------- - * enable - turn on a map - *--------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::enable(long type) -{ - glEnable((GLenum) type); -} - -/*------------------------------------------------------------------------- - * mapgrid2f - define a lattice of points with origin and offset - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::mapgrid2f(long nu, REAL u0, REAL u1, long nv, REAL v0, REAL v1) -{ -#ifdef USE_INTERNAL_EVAL - inMapGrid2f((int) nu, (REAL) u0, (REAL) u1, (int) nv, - (REAL) v0, (REAL) v1); -#else - - if(output_triangles) - { - global_grid_u0 = u0; - global_grid_u1 = u1; - global_grid_nu = nu; - global_grid_v0 = v0; - global_grid_v1 = v1; - global_grid_nv = nv; - } - else - glMapGrid2d((GLint) nu, (GLdouble) u0, (GLdouble) u1, (GLint) nv, - (GLdouble) v0, (GLdouble) v1); - -#endif -} - -void -OpenGLSurfaceEvaluator::polymode(long style) -{ - if(! output_triangles) - { - switch(style) { - default: - case N_MESHFILL: - - glPolygonMode((GLenum) GL_FRONT_AND_BACK, (GLenum) GL_FILL); - break; - case N_MESHLINE: - glPolygonMode((GLenum) GL_FRONT_AND_BACK, (GLenum) GL_LINE); - break; - case N_MESHPOINT: - glPolygonMode((GLenum) GL_FRONT_AND_BACK, (GLenum) GL_POINT); - break; - } - } -} - -void -OpenGLSurfaceEvaluator::bgnline(void) -{ - if(output_triangles) - bezierPatchMeshBeginStrip(global_bpm, GL_LINE_STRIP); - else - glBegin((GLenum) GL_LINE_STRIP); -} - -void -OpenGLSurfaceEvaluator::endline(void) -{ - if(output_triangles) - bezierPatchMeshEndStrip(global_bpm); - else - glEnd(); -} - -void -OpenGLSurfaceEvaluator::range2f(long type, REAL *from, REAL *to) -{ -} - -void -OpenGLSurfaceEvaluator::domain2f(REAL ulo, REAL uhi, REAL vlo, REAL vhi) -{ -} - -void -OpenGLSurfaceEvaluator::bgnclosedline(void) -{ - if(output_triangles) - bezierPatchMeshBeginStrip(global_bpm, GL_LINE_LOOP); - else - glBegin((GLenum) GL_LINE_LOOP); -} - -void -OpenGLSurfaceEvaluator::endclosedline(void) -{ - if(output_triangles) - bezierPatchMeshEndStrip(global_bpm); - else - glEnd(); -} - - - - - -void -OpenGLSurfaceEvaluator::bgntmesh(void) -{ - - tmeshing = 1; - which = 0; - vcount = 0; - - if(output_triangles) - bezierPatchMeshBeginStrip(global_bpm, GL_TRIANGLES); - else - glBegin((GLenum) GL_TRIANGLES); - -} - -void -OpenGLSurfaceEvaluator::swaptmesh(void) -{ - which = 1 - which; - -} - -void -OpenGLSurfaceEvaluator::endtmesh(void) -{ - tmeshing = 0; - - - if(output_triangles) - bezierPatchMeshEndStrip(global_bpm); - else - glEnd(); -} - -void -OpenGLSurfaceEvaluator::bgntfan(void) -{ - - if(output_triangles) - bezierPatchMeshBeginStrip(global_bpm, GL_TRIANGLE_FAN); - else - glBegin((GLenum) GL_TRIANGLE_FAN); - -} -void -OpenGLSurfaceEvaluator::endtfan(void) -{ - if(output_triangles) - bezierPatchMeshEndStrip(global_bpm); - else - glEnd(); -} - -void -OpenGLSurfaceEvaluator::evalUStrip(int n_upper, REAL v_upper, REAL* upper_val, int n_lower, REAL v_lower, REAL* lower_val) -{ -#ifdef USE_INTERNAL_EVAL - inEvalUStrip(n_upper, v_upper, upper_val, - n_lower, v_lower, lower_val); -#else - -#ifdef FOR_CHRIS - evalUStripExt(n_upper, v_upper, upper_val, - n_lower, v_lower, lower_val); - return; - -#endif - int i,j,k,l; - REAL leftMostV[2]; - - /* - *the algorithm works by scanning from left to right. - *leftMostV: the left most of the remaining verteces (on both upper and lower). - * it could an element of upperVerts or lowerVerts. - *i: upperVerts[i] is the first vertex to the right of leftMostV on upper line - *j: lowerVerts[j] is the first vertex to the right of leftMostV on lower line - */ - - /*initialize i,j,and leftMostV - */ - if(upper_val[0] <= lower_val[0]) - { - i=1; - j=0; - - leftMostV[0] = upper_val[0]; - leftMostV[1] = v_upper; - } - else - { - i=0; - j=1; - - leftMostV[0] = lower_val[0]; - leftMostV[1] = v_lower; - - } - - /*the main loop. - *the invariance is that: - *at the beginning of each loop, the meaning of i,j,and leftMostV are - *maintained - */ - while(1) - { - if(i >= n_upper) /*case1: no more in upper*/ - { - if(j<n_lower-1) /*at least two vertices in lower*/ - { - bgntfan(); - coord2f(leftMostV[0], leftMostV[1]); -// glNormal3fv(leftMostNormal); -// glVertex3fv(leftMostXYZ); - - while(j<n_lower){ - coord2f(lower_val[j], v_lower); -// glNormal3fv(lowerNormal[j]); -// glVertex3fv(lowerXYZ[j]); - j++; - - } - endtfan(); - } - break; /*exit the main loop*/ - } - else if(j>= n_lower) /*case2: no more in lower*/ - { - if(i<n_upper-1) /*at least two vertices in upper*/ - { - bgntfan(); - coord2f(leftMostV[0], leftMostV[1]); -// glNormal3fv(leftMostNormal); -// glVertex3fv(leftMostXYZ); - - for(k=n_upper-1; k>=i; k--) /*reverse order for two-side lighting*/ - { - coord2f(upper_val[k], v_upper); -// glNormal3fv(upperNormal[k]); -// glVertex3fv(upperXYZ[k]); - } - - endtfan(); - } - break; /*exit the main loop*/ - } - else /* case3: neither is empty, plus the leftMostV, there is at least one triangle to output*/ - { - if(upper_val[i] <= lower_val[j]) - { - bgntfan(); - coord2f(lower_val[j], v_lower); -// glNormal3fv(lowerNormal[j]); -// glVertex3fv(lowerXYZ[j]); - - /*find the last k>=i such that - *upperverts[k][0] <= lowerverts[j][0] - */ - k=i; - - while(k<n_upper) - { - if(upper_val[k] > lower_val[j]) - break; - k++; - - } - k--; - - - for(l=k; l>=i; l--)/*the reverse is for two-side lighting*/ - { - coord2f(upper_val[l], v_upper); -// glNormal3fv(upperNormal[l]); -// glVertex3fv(upperXYZ[l]); - - } - coord2f(leftMostV[0], leftMostV[1]); -// glNormal3fv(leftMostNormal); -// glVertex3fv(leftMostXYZ); - - endtfan(); - - /*update i and leftMostV for next loop - */ - i = k+1; - - leftMostV[0] = upper_val[k]; - leftMostV[1] = v_upper; -// leftMostNormal = upperNormal[k]; -// leftMostXYZ = upperXYZ[k]; - } - else /*upperVerts[i][0] > lowerVerts[j][0]*/ - { - bgntfan(); - coord2f(upper_val[i], v_upper); -// glNormal3fv(upperNormal[i]); -// glVertex3fv(upperXYZ[i]); - - coord2f(leftMostV[0], leftMostV[1]); -// glNormal3fv(leftMostNormal); -// glVertex3fv(leftMostXYZ); - - - /*find the last k>=j such that - *lowerverts[k][0] < upperverts[i][0] - */ - k=j; - while(k< n_lower) - { - if(lower_val[k] >= upper_val[i]) - break; - coord2f(lower_val[k], v_lower); -// glNormal3fv(lowerNormal[k]); -// glVertex3fv(lowerXYZ[k]); - - k++; - } - endtfan(); - - /*update j and leftMostV for next loop - */ - j=k; - leftMostV[0] = lower_val[j-1]; - leftMostV[1] = v_lower; - -// leftMostNormal = lowerNormal[j-1]; -// leftMostXYZ = lowerXYZ[j-1]; - } - } - } - //clean up -// free(upperXYZ); -// free(lowerXYZ); -// free(upperNormal); -// free(lowerNormal); -#endif - -} - - -void -OpenGLSurfaceEvaluator::evalVStrip(int n_left, REAL u_left, REAL* left_val, int n_right, REAL u_right, REAL* right_val) -{ -#ifdef USE_INTERNAL_EVAL - inEvalVStrip(n_left, u_left, left_val, - n_right, u_right, right_val); -#else - -#ifdef FOR_CHRIS - evalVStripExt(n_left, u_left, left_val, - n_right, u_right, right_val); - return; - -#endif - - int i,j,k,l; - REAL botMostV[2]; - /* - *the algorithm works by scanning from bot to top. - *botMostV: the bot most of the remaining verteces (on both left and right). - * it could an element of leftVerts or rightVerts. - *i: leftVerts[i] is the first vertex to the top of botMostV on left line - *j: rightVerts[j] is the first vertex to the top of botMostV on rightline - */ - - /*initialize i,j,and botMostV - */ - if(left_val[0] <= right_val[0]) - { - i=1; - j=0; - - botMostV[0] = u_left; - botMostV[1] = left_val[0]; - } - else - { - i=0; - j=1; - - botMostV[0] = u_right; - botMostV[1] = right_val[0]; - } - - /*the main loop. - *the invariance is that: - *at the beginning of each loop, the meaning of i,j,and botMostV are - *maintained - */ - while(1) - { - if(i >= n_left) /*case1: no more in left*/ - { - if(j<n_right-1) /*at least two vertices in right*/ - { - bgntfan(); - coord2f(botMostV[0], botMostV[1]); - while(j<n_right){ - coord2f(u_right, right_val[j]); -// glNormal3fv(rightNormal[j]); -// glVertex3fv(rightXYZ[j]); - j++; - - } - endtfan(); - } - break; /*exit the main loop*/ - } - else if(j>= n_right) /*case2: no more in right*/ - { - if(i<n_left-1) /*at least two vertices in left*/ - { - bgntfan(); - coord2f(botMostV[0], botMostV[1]); -// glNormal3fv(botMostNormal); -// glVertex3fv(botMostXYZ); - - for(k=n_left-1; k>=i; k--) /*reverse order for two-side lighting*/ - { - coord2f(u_left, left_val[k]); -// glNormal3fv(leftNormal[k]); -// glVertex3fv(leftXYZ[k]); - } - - endtfan(); - } - break; /*exit the main loop*/ - } - else /* case3: neither is empty, plus the botMostV, there is at least one triangle to output*/ - { - if(left_val[i] <= right_val[j]) - { - bgntfan(); - coord2f(u_right, right_val[j]); -// glNormal3fv(rightNormal[j]); -// glVertex3fv(rightXYZ[j]); - - /*find the last k>=i such that - *leftverts[k][0] <= rightverts[j][0] - */ - k=i; - - while(k<n_left) - { - if(left_val[k] > right_val[j]) - break; - k++; - - } - k--; - - - for(l=k; l>=i; l--)/*the reverse is for two-side lighting*/ - { - coord2f(u_left, left_val[l]); -// glNormal3fv(leftNormal[l]); -// glVertex3fv(leftXYZ[l]); - - } - coord2f(botMostV[0], botMostV[1]); -// glNormal3fv(botMostNormal); -// glVertex3fv(botMostXYZ); - - endtfan(); - - /*update i and botMostV for next loop - */ - i = k+1; - - botMostV[0] = u_left; - botMostV[1] = left_val[k]; -// botMostNormal = leftNormal[k]; -// botMostXYZ = leftXYZ[k]; - } - else /*left_val[i] > right_val[j])*/ - { - bgntfan(); - coord2f(u_left, left_val[i]); -// glNormal3fv(leftNormal[i]); -// glVertex3fv(leftXYZ[i]); - - coord2f(botMostV[0], botMostV[1]); -// glNormal3fv(botMostNormal); -// glVertex3fv(botMostXYZ); - - - /*find the last k>=j such that - *rightverts[k][0] < leftverts[i][0] - */ - k=j; - while(k< n_right) - { - if(right_val[k] >= left_val[i]) - break; - coord2f(u_right, right_val[k]); -// glNormal3fv(rightNormal[k]); -// glVertex3fv(rightXYZ[k]); - - k++; - } - endtfan(); - - /*update j and botMostV for next loop - */ - j=k; - botMostV[0] = u_right; - botMostV[1] = right_val[j-1]; - -// botMostNormal = rightNormal[j-1]; -// botMostXYZ = rightXYZ[j-1]; - } - } - } - //clean up -// free(leftXYZ); -// free(leftNormal); -// free(rightXYZ); -// free(rightNormal); -#endif -} - - -void -OpenGLSurfaceEvaluator::bgnqstrip(void) -{ - if(output_triangles) - bezierPatchMeshBeginStrip(global_bpm, GL_QUAD_STRIP); - else - glBegin((GLenum) GL_QUAD_STRIP); - -#ifdef STATISTICS - STAT_num_of_quad_strips++; -#endif -} - -void -OpenGLSurfaceEvaluator::endqstrip(void) -{ - if(output_triangles) - bezierPatchMeshEndStrip(global_bpm); - else - glEnd(); - -} - -/*------------------------------------------------------------------------- - * bgnmap2f - preamble to surface definition and evaluations - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::bgnmap2f(long) -{ - if(output_triangles) - { - /*deallocate the space which may has been - *allocated by global_bpm previously - */ - if(global_bpm != NULL) { - bezierPatchMeshListDelete(global_bpm); - global_bpm = NULL; - } - - - /* - auto_normal_flag = 1; //always output normal in callback mode. - //we could have used the following code, - //but Inspector doesn't have gl context - //before it calls tessellator. - //this way is temporary. - */ - //NEWCALLBACK - //if one of the two normal callback functions are set, - //then set - if(normalCallBackN != NULL || - normalCallBackData != NULL) - auto_normal_flag = 1; - else - auto_normal_flag = 0; - - //initialize so that no maps initially - vertex_flag = 0; - normal_flag = 0; - color_flag = 0; - texcoord_flag = 0; - - /* - if(glIsEnabled(GL_AUTO_NORMAL) == GL_TRUE) - auto_normal_flag = 1; - else if (callback_auto_normal == 1) - auto_normal_flag = 1; - else - auto_normal_flag = 0; - */ - glPushAttrib((GLbitfield) GL_EVAL_BIT); - - } - else - { - glPushAttrib((GLbitfield) GL_EVAL_BIT); - - /*to avoid side effect, we restor the opengl state for GL_POLYGON_MODE - */ - glGetIntegerv(GL_POLYGON_MODE, gl_polygon_mode); - } - -} - -/*------------------------------------------------------------------------- - * endmap2f - postamble to a map - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::endmap2f(void) -{ - - if(output_triangles) - { - //bezierPatchMeshListDelDeg(global_bpm); - - // bezierPatchMeshListEval(global_bpm); - - //surfcount++; - //printf("surfcount=%i\n", surfcount); - //if(surfcount == 8) exit(0); - - inBPMListEvalEM(global_bpm); - - - -/* - global_bpm = bezierPatchMeshListReverse(global_bpm); - { - float *vertex_array; - float *normal_array; - int *length_array; - int *type_array; - int num_strips; - bezierPatchMeshListCollect(global_bpm, &vertex_array, &normal_array, &length_array, &type_array, &num_strips); - drawStrips(vertex_array, normal_array, length_array, type_array, num_strips); - free(vertex_array); - free(normal_array); - free(length_array); - free(type_array); - } -*/ - - //bezierPatchMeshListPrint(global_bpm); - //bezierPatchMeshListDraw(global_bpm); - -// printf("num triangles=%i\n", bezierPatchMeshListNumTriangles(global_bpm)); - -#ifdef USE_LOD -#else - bezierPatchMeshListDelete(global_bpm); - global_bpm = NULL; -#endif - glPopAttrib(); - } -else - { -#ifndef USE_LOD - glPopAttrib(); -#endif - -#ifdef STATISTICS - fprintf(stderr, "num_vertices=%i,num_triangles=%i,num_quads_strips=%i\n", STAT_num_of_eval_vertices,STAT_num_of_triangles,STAT_num_of_quad_strips); -#endif - - /*to restore the gl_polygon_mode - */ -#ifndef USE_LOD - glPolygonMode( GL_FRONT, (GLenum) gl_polygon_mode[0]); - glPolygonMode( GL_BACK, (GLenum) gl_polygon_mode[1]); -#endif -} - -} - -/*------------------------------------------------------------------------- - * map2f - pass a desription of a surface map - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::map2f( - long _type, - REAL _ulower, /* u lower domain coord */ - REAL _uupper, /* u upper domain coord */ - long _ustride, /* interpoint distance */ - long _uorder, /* parametric order */ - REAL _vlower, /* v lower domain coord */ - REAL _vupper, /* v upper domain coord */ - long _vstride, /* interpoint distance */ - long _vorder, /* parametric order */ - REAL *pts) /* control points */ -{ -#ifdef USE_INTERNAL_EVAL - inMap2f((int) _type, (REAL) _ulower, (REAL) _uupper, - (int) _ustride, (int) _uorder, (REAL) _vlower, - (REAL) _vupper, (int) _vstride, (int) _vorder, - (REAL *) pts); -#else - - - - if(output_triangles) - { - if(global_bpm == NULL) - global_bpm = bezierPatchMeshMake2(10,10); - if( - (global_bpm->bpatch == NULL && - (_type == GL_MAP2_VERTEX_3 || _type == GL_MAP2_VERTEX_4)) - || - (global_bpm->bpatch_normal == NULL && - (_type == GL_MAP2_NORMAL)) - || - (global_bpm->bpatch_color == NULL && - (_type == GL_MAP2_INDEX || _type == GL_MAP2_COLOR_4)) - || - (global_bpm->bpatch_texcoord == NULL && - (_type == GL_MAP2_TEXTURE_COORD_1 || - _type == GL_MAP2_TEXTURE_COORD_2 || - _type == GL_MAP2_TEXTURE_COORD_3 || - _type == GL_MAP2_TEXTURE_COORD_4 ) - )) - { - bezierPatchMeshPutPatch(global_bpm, (int) _type, _ulower, _uupper,(int) _ustride,(int) _uorder,_vlower, _vupper, (int) _vstride, (int) _vorder, pts); - } - else /*new surface patch (with multiple maps) starts*/ - { - bezierPatchMesh *temp = bezierPatchMeshMake2(10,10); - bezierPatchMeshPutPatch(temp, (int) _type, _ulower, _uupper,(int) _ustride,(int) _uorder,_vlower, _vupper, (int) _vstride, (int) _vorder, pts); - global_bpm = bezierPatchMeshListInsert(global_bpm, temp); - - /* - global_bpm = bezierPatchMeshListInsert(global_bpm, - bezierPatchMeshMake( - (int) _type, _ulower, _uupper,(int) _ustride, (int) _uorder, _vlower, _vupper, (int) _vstride, (int) _vorder, pts, 10, 10)); - */ - } - } - else /*not output triangles*/ - { - glMap2f((GLenum) _type, (GLfloat) _ulower, (GLfloat) _uupper, - (GLint) _ustride, (GLint) _uorder, (GLfloat) _vlower, - (GLfloat) _vupper, (GLint) _vstride, (GLint) _vorder, - (const GLfloat *) pts); - } - -#endif -} - - -/*------------------------------------------------------------------------- - * mapmesh2f - evaluate a mesh of points on lattice - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::mapmesh2f(long style, long umin, long umax, long vmin, long vmax) -{ -#ifdef NO_EVALUATION -return; -#endif - -#ifdef USE_INTERNAL_EVAL - inEvalMesh2((int)umin, (int)vmin, (int)umax, (int)vmax); -#else - - - -if(output_triangles) -{ -#ifdef USE_LOD - bezierPatchMeshBeginStrip(global_bpm, GL_POLYGON); - bezierPatchMeshInsertUV(global_bpm, global_grid_u0, global_grid_v0); - bezierPatchMeshInsertUV(global_bpm, global_grid_u1, global_grid_v1); - bezierPatchMeshInsertUV(global_bpm, (REAL)global_grid_nu, (REAL)global_grid_nv); - bezierPatchMeshInsertUV(global_bpm, (REAL)umin, (REAL)vmin); - bezierPatchMeshInsertUV(global_bpm, (REAL)umax, (REAL)vmax); - bezierPatchMeshEndStrip(global_bpm); - -#else - - REAL du, dv; - long i,j; - if(global_grid_nu == 0 || global_grid_nv == 0) - return; /*no points need to be output*/ - du = (global_grid_u1 - global_grid_u0) / (REAL)global_grid_nu; - dv = (global_grid_v1 - global_grid_v0) / (REAL)global_grid_nv; - - if(global_grid_nu >= global_grid_nv){ - - for(i=umin; i<umax; i++){ - REAL u1 = (i==global_grid_nu)? global_grid_u1:(global_grid_u0 + i*du); - REAL u2 = ((i+1) == global_grid_nu)? global_grid_u1: (global_grid_u0+(i+1)*du); - - bgnqstrip(); - for(j=vmax; j>=vmin; j--){ - REAL v1 = (j == global_grid_nv)? global_grid_v1: (global_grid_v0 +j*dv); - - coord2f(u1, v1); - coord2f(u2, v1); - } - endqstrip(); - } - } - else{ - - for(i=vmin; i<vmax; i++){ - REAL v1 = (i==global_grid_nv)? global_grid_v1:(global_grid_v0 + i*dv); - REAL v2 = ((i+1) == global_grid_nv)? global_grid_v1: (global_grid_v0+(i+1)*dv); - - bgnqstrip(); - for(j=umax; j>=umin; j--){ - REAL u1 = (j == global_grid_nu)? global_grid_u1: (global_grid_u0 +j*du); - coord2f(u1, v2); - coord2f(u1, v1); - } - endqstrip(); - } - } -#endif -} -else -{ - switch(style) { - default: - case N_MESHFILL: - glEvalMesh2((GLenum) GL_FILL, (GLint) umin, (GLint) umax, - (GLint) vmin, (GLint) vmax); - break; - case N_MESHLINE: - glEvalMesh2((GLenum) GL_LINE, (GLint) umin, (GLint) umax, - (GLint) vmin, (GLint) vmax); - break; - case N_MESHPOINT: - glEvalMesh2((GLenum) GL_POINT, (GLint) umin, (GLint) umax, - (GLint) vmin, (GLint) vmax); - break; - } - } - -#endif - -#ifdef STATISTICS - STAT_num_of_quad_strips += (umax-umin)*(vmax-vmin); -#endif -} - -/*------------------------------------------------------------------------- - * evalcoord2f - evaluate a point on a surface - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::evalcoord2f(long, REAL u, REAL v) -{ - - -#ifdef NO_EVALUATION -return; -#endif - - - newtmeshvert(u, v); -} - -/*------------------------------------------------------------------------- - * evalpoint2i - evaluate a grid point - *------------------------------------------------------------------------- - */ -void -OpenGLSurfaceEvaluator::evalpoint2i(long u, long v) -{ -#ifdef NO_EVALUATION -return; -#endif - - newtmeshvert(u, v); -} - -void -OpenGLSurfaceEvaluator::point2i( long u, long v ) -{ -#ifdef NO_EVALUATION -return; -#else - -#ifdef USE_INTERNAL_EVAL - inEvalPoint2( (int)u, (int)v); -#else - - -if(output_triangles) -{ - - REAL du, dv; - REAL fu,fv; - du = (global_grid_u1 - global_grid_u0) / (REAL)global_grid_nu; - dv = (global_grid_v1 - global_grid_v0) / (REAL)global_grid_nv; - fu = (u==global_grid_nu)? global_grid_u1:(global_grid_u0 + u*du); - fv = (v == global_grid_nv)? global_grid_v1: (global_grid_v0 +v*dv); - coord2f(fu,fv); -} -else - glEvalPoint2((GLint) u, (GLint) v); - - -#endif - -#ifdef STATISTICS - STAT_num_of_eval_vertices++; -#endif - -#endif - -} - -void -OpenGLSurfaceEvaluator::coord2f( REAL u, REAL v ) -{ -#ifdef NO_EVALUATION -return; -#else - -#ifdef USE_INTERNAL_EVAL - inEvalCoord2f( u, v); -#else - - -if(output_triangles) - bezierPatchMeshInsertUV(global_bpm, u,v); -else - glEvalCoord2f((GLfloat) u, (GLfloat) v); - - -#endif - - -#ifdef STATISTICS - STAT_num_of_eval_vertices++; -#endif - -#endif -} - -void -OpenGLSurfaceEvaluator::newtmeshvert( long u, long v ) -{ -#ifdef NO_EVALUATION -return; -#else - - if (tmeshing) { - - if (vcount == 2) { - vertexCache[0]->invoke(this); - vertexCache[1]->invoke(this); - point2i( u, v); - - } else { - vcount++; - } - - vertexCache[which]->saveEvalPoint(u, v); - which = 1 - which; - } else { - point2i( u, v); - } -#endif -} - -void -OpenGLSurfaceEvaluator::newtmeshvert( REAL u, REAL v ) -{ -#ifdef NO_EVALUATION -return; -#else - if (tmeshing) { - - - if (vcount == 2) { - vertexCache[0]->invoke(this); - vertexCache[1]->invoke(this); - coord2f(u,v); - - } else { - vcount++; - } - - vertexCache[which]->saveEvalCoord(u, v); - which = 1 - which; - } else { - - coord2f( u, v); - } -#endif - -} - -#ifdef _WIN32 -void OpenGLSurfaceEvaluator::putCallBack(GLenum which, void (GLAPIENTRY *fn)() ) -#else -void OpenGLSurfaceEvaluator::putCallBack(GLenum which, _GLUfuncptr fn ) -#endif -{ - switch(which) - { - case GLU_NURBS_BEGIN: - beginCallBackN = (void (GLAPIENTRY *) (GLenum)) fn; - break; - case GLU_NURBS_END: - endCallBackN = (void (GLAPIENTRY *) (void)) fn; - break; - case GLU_NURBS_VERTEX: - vertexCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn; - break; - case GLU_NURBS_NORMAL: - normalCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn; - break; - case GLU_NURBS_COLOR: - colorCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn; - break; - case GLU_NURBS_TEXTURE_COORD: - texcoordCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn; - break; - case GLU_NURBS_BEGIN_DATA: - beginCallBackData = (void (GLAPIENTRY *) (GLenum, void*)) fn; - break; - case GLU_NURBS_END_DATA: - endCallBackData = (void (GLAPIENTRY *) (void*)) fn; - break; - case GLU_NURBS_VERTEX_DATA: - vertexCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn; - break; - case GLU_NURBS_NORMAL_DATA: - normalCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn; - break; - case GLU_NURBS_COLOR_DATA: - colorCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn; - break; - case GLU_NURBS_TEXTURE_COORD_DATA: - texcoordCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn; - break; - - } -} - - -void -OpenGLSurfaceEvaluator::beginCallBack(GLenum which, void *data) -{ - if(beginCallBackData) - beginCallBackData(which, data); - else if(beginCallBackN) - beginCallBackN(which); -} - -void -OpenGLSurfaceEvaluator::endCallBack(void *data) -{ - if(endCallBackData) - endCallBackData(data); - else if(endCallBackN) - endCallBackN(); -} - -void -OpenGLSurfaceEvaluator::vertexCallBack(const GLfloat *vert, void* data) -{ - if(vertexCallBackData) - vertexCallBackData(vert, data); - else if(vertexCallBackN) - vertexCallBackN(vert); -} - - -void -OpenGLSurfaceEvaluator::normalCallBack(const GLfloat *normal, void* data) -{ - if(normalCallBackData) - normalCallBackData(normal, data); - else if(normalCallBackN) - normalCallBackN(normal); -} - -void -OpenGLSurfaceEvaluator::colorCallBack(const GLfloat *color, void* data) -{ - if(colorCallBackData) - colorCallBackData(color, data); - else if(colorCallBackN) - colorCallBackN(color); -} - -void -OpenGLSurfaceEvaluator::texcoordCallBack(const GLfloat *texcoord, void* data) -{ - if(texcoordCallBackData) - texcoordCallBackData(texcoord, data); - else if(texcoordCallBackN) - texcoordCallBackN(texcoord); -} - - - - |