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Commit c39bb875 authored by Christophe Geuzaine's avatar Christophe Geuzaine
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Many fixes due to rostamian@umbc.edu

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Graphics/gl2ps.cpp
+ 34
− 162
View file @ c39bb875
......@@ -2,7 +2,7 @@
* GL2PS, an OpenGL to PostScript Printing Library
* Copyright (C) 1999-2002 Christophe Geuzaine
*
* $Id: gl2ps.cpp,v 1.43 2002-05-25 19:17:45 geuzaine Exp $
* $Id: gl2ps.cpp,v 1.44 2002-06-04 21:52:26 geuzaine Exp $
*
* E-mail: geuz@geuz.org
* URL: http://www.geuz.org/gl2ps/
......@@ -31,10 +31,10 @@
#include <time.h>
#include "gl2ps.h"
/* The static gl2ps context. gl2ps is not thread safe (we should
create a local GL2PScontext during gl2psBeginPage). */
/* The gl2ps context. gl2ps is not thread safe (we should create a
local GL2PScontext during gl2psBeginPage). */
static GL2PScontext *gl2ps=NULL;
GL2PScontext *gl2ps=NULL;
/* Some 'system' utility routines */
......@@ -266,7 +266,8 @@ GLvoid gl2psFreePrimitive(GLvoid *a, GLvoid *b){
q = *(GL2PSprimitive**)a;
gl2psFree(q->verts);
if(q->type == GL2PS_TEXT){
if(q->text->str) gl2psFree(q->text->str);
gl2psFree(q->text->str);
gl2psFree(q->text->fontname);
gl2psFree(q->text);
}
gl2psFree(q);
......@@ -611,141 +612,7 @@ GLvoid gl2psTraverseBspTree(GL2PSbsptree *tree, GL2PSxyz eye, GLfloat epsilon,
}
}
/* The 2D sorting routines (for occlusion culling). These routines do
_not_ work as expected at the moment... */
GLint gl2psSplit2d(GL2PSxyz a, GL2PSxyz b, GL2PSxy tc, GL2PSxy td){
GLfloat line[3], n, d[2];
/*
in back of == >0 == outside polygon
*/
line[0] = td[1] - tc[1] ;
line[1] = tc[0] - td[0] ;
n = sqrt(line[0]*line[0]+line[1]*line[1]);
line[0] /= n ;
line[1] /= n ;
line[2] = - line[0] * tc[0] - line[1] * tc[1] ;
d[0] = line[0]*a[0] + line[1]*a[1] + line[2] ;
if(b == NULL){
if(d[0] > GL2PS_EPSILON) return GL2PS_IN_BACK_OF;
else if(d[0] < -GL2PS_EPSILON) return GL2PS_IN_FRONT_OF;
else return GL2PS_COINCIDENT;
}
else{
d[1] = line[0]*b[0] + line[1]*b[1] + line[2] ;
if(d[0] > GL2PS_EPSILON){
if(d[1] < -GL2PS_EPSILON) return GL2PS_SPANNING;
else return GL2PS_IN_BACK_OF;
}
if(d[0] < -GL2PS_EPSILON){
if(d[1] > GL2PS_EPSILON) return GL2PS_SPANNING;
else return GL2PS_IN_FRONT_OF;
}
else{
if(d[1] > GL2PS_EPSILON) return GL2PS_IN_BACK_OF;
else if(d[1] < -GL2PS_EPSILON) return GL2PS_IN_FRONT_OF;
/* else return GL2PS_COINCIDENT; */
else return GL2PS_IN_FRONT_OF;
}
}
}
GLvoid gl2psSimplify2d(GL2PSbsptree2d *tree){
if(!tree) return;
if(tree->back){
if(tree->flag==0)
gl2psSimplify2d(tree->back);
}
if(tree->front){
gl2psSimplify2d(tree->front);
}
}
GLvoid gl2psReset(GL2PSbsptree2d *tree){
if(!tree) return;
tree->flag=0;
if(tree->back){
gl2psReset(tree->back);
}
if(tree->front){
gl2psReset(tree->front);
}
}
static GL2PSbsptree2d *image=NULL;
GLvoid gl2psAddInImageTree(GL2PSprimitive *prim,
GL2PSxyz a, GL2PSxyz b, GL2PSbsptree2d **tree){
GLint res;
if(*tree == NULL){
/* insert the edge, except for lines & points */
if(prim->numverts > 2){
prim->depth = -1.;
(*tree) = (GL2PSbsptree2d*)gl2psMalloc(sizeof(GL2PSbsptree2d));
(*tree)->a[0] = a[0];
(*tree)->a[1] = a[1];
(*tree)->b[0] = b[0];
(*tree)->b[1] = b[1];
(*tree)->front = NULL;
(*tree)->back = NULL;
(*tree)->flag = 1;
}
}
else{
res = gl2psSplit2d(a, b, (*tree)->a, (*tree)->b);
switch(res){
case GL2PS_IN_BACK_OF:
gl2psAddInImageTree(prim, a, b, &(*tree)->back);
break;
case GL2PS_IN_FRONT_OF:
if((*tree)->flag) gl2psAddInImageTree(prim, a, b, &(*tree)->front);
break;
case GL2PS_SPANNING:
gl2psAddInImageTree(prim, a, b, &(*tree)->back);
if((*tree)->flag) gl2psAddInImageTree(prim, a, b, &(*tree)->front);
break;
case GL2PS_COINCIDENT:
(*tree)->flag = 1;
break;
}
}
}
static int count=0;
GLvoid gl2psAddInImage(void *a, void *b){
GL2PSprimitive *prim;
GLint i;
prim = *(GL2PSprimitive **)a;
/* if(prim->numverts == 1)
gl2psAddInImageTree(prim, prim->verts[i].xyz, NULL, &image); */
if(prim->numverts < 3)
return;
else{
for(i=0 ; i<prim->numverts ; i++){
count++;
gl2psAddInImageTree(prim, prim->verts[i].xyz,
prim->verts[gl2psGetIndex(i,prim->numverts)].xyz, &image);
}
}
/* simplify old/new */
gl2psReset(image);
}
/* Boundary contruction */
#define GL2PS_BOUNDARY_OFFSET 0
......@@ -851,8 +718,8 @@ GLvoid gl2psAddPolyPrimitive(GLshort type, GLshort numverts,
prim->verts[1].xyz[2] -= 1.;
}
else{
prim->verts[0].xyz[2] -= 0.05;
prim->verts[1].xyz[2] -= 0.05;
prim->verts[0].xyz[2] -= GL2PS_SIMPLE_OFFSET;
prim->verts[1].xyz[2] -= GL2PS_SIMPLE_OFFSET;
}
}
}
......@@ -912,7 +779,7 @@ GLint gl2psGetVertex(GL2PSvertex *v, GLfloat *p){
v->xyz[0] = p[0];
v->xyz[1] = p[1];
v->xyz[2] = 1000. * p[2];
v->xyz[2] = GL2PS_DEPTH_FACT * p[2];
if(gl2ps->colormode == GL_COLOR_INDEX && gl2ps->colorsize > 0){
i = (GLint)(p[3] + 0.5);
......@@ -1186,23 +1053,20 @@ GLvoid gl2psPrintPostScriptHeader(GLvoid){
}
}
#define PRINTCOLOR \
if(rgba[0] != prim->verts[0].rgba[0] || \
rgba[1] != prim->verts[0].rgba[1] || \
rgba[2] != prim->verts[0].rgba[2]){ \
rgba[0] = prim->verts[0].rgba[0]; \
rgba[1] = prim->verts[0].rgba[1]; \
rgba[2] = prim->verts[0].rgba[2]; \
fprintf(gl2ps->stream, "%g %g %g C\n", rgba[0], rgba[1], rgba[2]); \
#define PRINTCOLOR \
if(gl2ps->lastrgba[0] != prim->verts[0].rgba[0] || \
gl2ps->lastrgba[1] != prim->verts[0].rgba[1] || \
gl2ps->lastrgba[2] != prim->verts[0].rgba[2]){ \
gl2ps->lastrgba[0] = prim->verts[0].rgba[0]; \
gl2ps->lastrgba[1] = prim->verts[0].rgba[1]; \
gl2ps->lastrgba[2] = prim->verts[0].rgba[2]; \
fprintf(gl2ps->stream, "%g %g %g C\n", gl2ps->lastrgba[0], \
gl2ps->lastrgba[1], gl2ps->lastrgba[2]); \
}
#define CLEARCOLOR rgba[0] = rgba[1] = rgba[2] = -1.
#define CLEARCOLOR gl2ps->lastrgba[0] = gl2ps->lastrgba[1] = gl2ps->lastrgba[2] = -1.
GLvoid gl2psPrintPostScriptPrimitive(GLvoid *a, GLvoid *b){
static GL2PSrgba rgba={-1.,-1.,-1.,-1.};
static float linewidth=-1.;
GL2PSprimitive *prim;
prim = *(GL2PSprimitive**) a;
......@@ -1222,9 +1086,9 @@ GLvoid gl2psPrintPostScriptPrimitive(GLvoid *a, GLvoid *b){
prim->verts[0].xyz[0], prim->verts[0].xyz[1], 0.5*prim->width);
break;
case GL2PS_LINE :
if(linewidth != prim->width){
linewidth = prim->width;
fprintf(gl2ps->stream, "%g W\n", linewidth);
if(gl2ps->lastlinewidth != prim->width){
gl2ps->lastlinewidth = prim->width;
fprintf(gl2ps->stream, "%g W\n", gl2ps->lastlinewidth);
}
if(prim->dash)
fprintf(gl2ps->stream, "[%d] 0 setdash\n", prim->dash);
......@@ -1357,6 +1221,11 @@ GL2PSDLL_API GLvoid gl2psBeginPage(char *title, char *producer,
gl2ps->colormode = colormode;
gl2ps->buffersize = buffersize > 0 ? buffersize : 2048 * 2048;
gl2ps->feedback = (GLfloat*)gl2psMalloc(gl2ps->buffersize * sizeof(GLfloat));
gl2ps->lastrgba[0] = -1.;
gl2ps->lastrgba[1] = -1.;
gl2ps->lastrgba[2] = -1.;
gl2ps->lastrgba[3] = -1.;
gl2ps->lastlinewidth = -1.;
gl2ps->primitives = gl2psListCreate(500, 500, sizeof(GL2PSprimitive*));
if(gl2ps->colormode == GL_RGBA){
......@@ -1440,10 +1309,12 @@ GL2PSDLL_API GLint gl2psEndPage(GLvoid){
root = (GL2PSbsptree*)gl2psMalloc(sizeof(GL2PSbsptree));
gl2psBuildBspTree(root, gl2ps->primitives);
if(gl2ps->boundary) gl2psBuildPolygonBoundary(root);
/* Occlusion culling is not implemented yet...
if(gl2ps->options & GL2PS_OCCLUSION_CULL){
gl2psTraverseBspTree(root, eye, -(float)GL2PS_EPSILON, gl2psLess,
gl2psAddInImage);
}
*/
gl2psTraverseBspTree(root, eye, (float)GL2PS_EPSILON, gl2psGreater,
pprim);
gl2psFreeBspTree(root);
......@@ -1470,7 +1341,7 @@ GL2PSDLL_API GLvoid gl2psText(char *str, char *fontname, GLint fontsize){
GL2PSprimitive *prim;
GLboolean valid;
if(!gl2ps) return;
if(!gl2ps || !str) return;
if(gl2ps->options & GL2PS_NO_TEXT) return;
......@@ -1487,14 +1358,15 @@ GL2PSDLL_API GLvoid gl2psText(char *str, char *fontname, GLint fontsize){
prim->verts[0].xyz[0] = pos[0];
prim->verts[0].xyz[1] = pos[1];
prim->verts[0].xyz[2] = pos[2];
prim->depth = pos[2];
prim->depth = GL2PS_DEPTH_FACT * pos[2];
prim->dash = 0;
prim->width = 1;
glGetFloatv(GL_CURRENT_RASTER_COLOR, prim->verts[0].rgba);
prim->text = (GL2PSstring*)gl2psMalloc(sizeof(GL2PSstring));
prim->text->str = (char*)gl2psMalloc((strlen(str)+1)*sizeof(char));
strcpy(prim->text->str, str);
prim->text->fontname = fontname;
prim->text->fontname = (char*)gl2psMalloc((strlen(fontname)+1)*sizeof(char));
strcpy(prim->text->fontname, fontname);
prim->text->fontsize = fontsize;
gl2psListAdd(gl2ps->primitives, &prim);
......
Graphics/gl2ps.h
+ 6
− 11
View file @ c39bb875
......@@ -2,7 +2,7 @@
* GL2PS, an OpenGL to PostScript Printing Library
* Copyright (C) 1999-2002 Christophe Geuzaine
*
* $Id: gl2ps.h,v 1.23 2002-05-25 19:17:45 geuzaine Exp $
* $Id: gl2ps.h,v 1.24 2002-06-04 21:52:27 geuzaine Exp $
*
* E-mail: geuz@geuz.org
* URL: http://www.geuz.org/gl2ps/
......@@ -54,7 +54,7 @@
#endif /* __APPLE__ */
#define GL2PS_VERSION 0.53
#define GL2PS_VERSION 0.6
#define GL2PS_NONE 0
/* Output file format */
......@@ -87,6 +87,8 @@
/* Magic numbers */
#define GL2PS_EPSILON 5.e-3
#define GL2PS_DEPTH_FACT 1000.
#define GL2PS_SIMPLE_OFFSET 0.05
/* Message levels */
......@@ -144,14 +146,6 @@ struct _GL2PSbsptree {
GL2PSbsptree *front, *back;
};
typedef struct _GL2PSbsptree2d GL2PSbsptree2d;
struct _GL2PSbsptree2d {
GLshort flag;
GL2PSxy a, b;
GL2PSbsptree2d *front, *back;
};
typedef struct {
GL2PSxyz xyz;
GL2PSrgba rgba;
......@@ -174,7 +168,8 @@ typedef struct {
char *title, *producer, *filename;
GLboolean shade, boundary;
GLfloat *feedback, offset[2];
GL2PSrgba *colormap;
GL2PSrgba *colormap, lastrgba;
float lastlinewidth;
GL2PSlist *primitives;
FILE *stream;
} GL2PScontext;
......
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