| 1 |
< |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
| 1 |
> |
/* Copyright (c) 1999 Silicon Graphics, Inc. */ |
| 2 |
|
|
| 3 |
|
#ifndef lint |
| 4 |
|
static char SCCSid[] = "$SunId$ SGI"; |
| 5 |
|
#endif |
| 6 |
|
|
| 7 |
|
/* |
| 8 |
< |
* Octree drawing operations for OpenGL driver. |
| 8 |
> |
* Geometry drawing operations for OpenGL driver. |
| 9 |
|
*/ |
| 10 |
|
|
| 11 |
|
#include "radogl.h" |
| 12 |
+ |
#include "rhdriver.h" |
| 13 |
|
|
| 14 |
< |
#ifndef MAXOCTREE |
| 15 |
< |
#define MAXOCTREE 8 /* maximum octrees to load at once */ |
| 14 |
> |
#ifndef MAXGEO |
| 15 |
> |
#define MAXGEO 8 /* maximum geometry list length */ |
| 16 |
|
#endif |
| 17 |
+ |
#ifndef MAXPORT |
| 18 |
+ |
#define MAXPORT (MAXGEO*4) /* maximum number of portal files */ |
| 19 |
+ |
#endif |
| 20 |
|
|
| 21 |
< |
static struct otEntry { |
| 22 |
< |
char *otfile; /* octree file name */ |
| 21 |
> |
int gmPortals = 0; /* current portal GL list id */ |
| 22 |
> |
static char *curportlist[MAXPORT]; /* current portal list */ |
| 23 |
> |
static char *newportlist[MAXPORT]; /* new portal file list */ |
| 24 |
> |
|
| 25 |
> |
static struct gmEntry { |
| 26 |
> |
char *gfile; /* geometry file name */ |
| 27 |
|
FVECT cent; /* centroid */ |
| 28 |
|
FLOAT rad; /* radius */ |
| 29 |
|
int listid; /* display list identifier */ |
| 30 |
< |
} otCurrent[MAXOCTREE], otNext[MAXOCTREE]; /* current and next list */ |
| 30 |
> |
} gmCurrent[MAXGEO], gmNext[MAXGEO]; /* current and next list */ |
| 31 |
|
|
| 32 |
< |
#define FORALLOCT(ot,i) for (i=0;i<MAXOCTREE&&ot[i].otfile!=NULL;i++) |
| 32 |
> |
#define FORALLGEOM(ot,i) for (i=0;i<MAXGEO&&ot[i].gfile!=NULL;i++) |
| 33 |
|
|
| 34 |
+ |
#define FORALLPORT(pl,i) for (i=0;i<MAXPORT&&pl[i]!=NULL;i++) |
| 35 |
|
|
| 36 |
< |
otNewOctree(fname) /* add new octree to next list */ |
| 37 |
< |
char *fname; |
| 36 |
> |
extern char *atos(), *sskip(), *sskip2(); |
| 37 |
> |
|
| 38 |
> |
|
| 39 |
> |
gmNewGeom(file) /* add new geometry to next list */ |
| 40 |
> |
char *file; |
| 41 |
|
{ |
| 42 |
|
register int i, j; |
| 43 |
|
/* check if already in next list */ |
| 44 |
< |
FORALLOCT(otNext, i) |
| 45 |
< |
if (!strcmp(fname, otNext[i].otfile)) |
| 44 |
> |
FORALLGEOM(gmNext, i) |
| 45 |
> |
if (!strcmp(file, gmNext[i].gfile)) |
| 46 |
|
return; |
| 47 |
< |
if (i >= MAXOCTREE) { |
| 47 |
> |
if (i >= MAXGEO) { |
| 48 |
|
error(WARNING, "too many section octrees -- ignoring extra"); |
| 49 |
|
return; |
| 50 |
|
} |
| 51 |
|
/* check if copy in current list */ |
| 52 |
< |
FORALLOCT(otCurrent, j) |
| 53 |
< |
if (!strcmp(fname, otCurrent[j].otfile)) { |
| 54 |
< |
copystruct(&otNext[i], &otCurrent[i]); |
| 52 |
> |
FORALLGEOM(gmCurrent, j) |
| 53 |
> |
if (!strcmp(file, gmCurrent[j].gfile)) { |
| 54 |
> |
copystruct(&gmNext[i], &gmCurrent[j]); |
| 55 |
|
return; |
| 56 |
|
} |
| 57 |
|
/* else load new octree */ |
| 58 |
< |
otNext[i].otfile = fname; |
| 58 |
> |
gmNext[i].gfile = file; |
| 59 |
|
dolights = 0; |
| 60 |
< |
otNext[i].listid = rgl_octlist(fname, otNext[i].cent, &otNext[i].rad); |
| 60 |
> |
domats = 1; |
| 61 |
> |
gmNext[i].listid = rgl_octlist(file, gmNext[i].cent, &gmNext[i].rad); |
| 62 |
> |
gmNext[i].rad *= 1.732; /* go to corners */ |
| 63 |
|
#ifdef DEBUG |
| 64 |
|
fprintf(stderr, "Loaded octree \"%s\" into listID %d with radius %f\n", |
| 65 |
< |
fname, otNext[i].listid, otNext[i].rad); |
| 65 |
> |
file, gmNext[i].listid, gmNext[i].rad); |
| 66 |
|
#endif |
| 67 |
|
} |
| 68 |
|
|
| 69 |
|
|
| 70 |
< |
otEndOctree() /* make next list current */ |
| 70 |
> |
gmEndGeom() /* make next list current */ |
| 71 |
|
{ |
| 72 |
|
register int i, j; |
| 73 |
|
|
| 74 |
< |
FORALLOCT(otCurrent, i) { |
| 75 |
< |
FORALLOCT(otNext, j) |
| 76 |
< |
if (otNext[j].listid == otCurrent[i].listid) |
| 74 |
> |
FORALLGEOM(gmCurrent, i) { |
| 75 |
> |
FORALLGEOM(gmNext, j) |
| 76 |
> |
if (gmNext[j].listid == gmCurrent[i].listid) |
| 77 |
|
break; |
| 78 |
< |
if (j >= MAXOCTREE || otNext[j].otfile == NULL) |
| 79 |
< |
glDeleteLists(otCurrent[i].listid, 1); /* not found */ |
| 78 |
> |
if (j >= MAXGEO || gmNext[j].gfile == NULL) |
| 79 |
> |
glDeleteLists(gmCurrent[i].listid, 1); /* not found */ |
| 80 |
|
} |
| 81 |
< |
bcopy((char *)otNext, (char *)otCurrent, sizeof(otNext)); |
| 82 |
< |
otNext[0].otfile = NULL; |
| 81 |
> |
bcopy((char *)gmNext, (char *)gmCurrent, sizeof(gmNext)); |
| 82 |
> |
bzero((char *)gmNext, sizeof(gmNext)); |
| 83 |
|
} |
| 84 |
|
|
| 85 |
|
|
| 86 |
|
int |
| 87 |
< |
otDrawOctrees() /* draw current list of octrees */ |
| 87 |
> |
gmDrawGeom() /* draw current list of octrees (and ports) */ |
| 88 |
|
{ |
| 89 |
< |
register int i; |
| 89 |
> |
register int n; |
| 90 |
|
|
| 91 |
< |
FORALLOCT(otCurrent, i) |
| 92 |
< |
glCallList(otCurrent[i].listid); |
| 93 |
< |
return(i); |
| 91 |
> |
FORALLGEOM(gmCurrent, n) |
| 92 |
> |
glCallList(gmCurrent[n].listid); |
| 93 |
> |
return(n); |
| 94 |
|
} |
| 95 |
|
|
| 96 |
|
|
| 97 |
< |
otDepthLimit(dl, vorg, vdir) /* compute approximate depth limits for view */ |
| 97 |
> |
gmDrawPortals(r, g, b, a) /* draw portals with specific RGBA value */ |
| 98 |
> |
int r, g, b, a; |
| 99 |
> |
{ |
| 100 |
> |
if (!gmPortals || r<0 & g<0 & b<0 & a<0) |
| 101 |
> |
return; |
| 102 |
> |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT| |
| 103 |
> |
GL_POLYGON_BIT|GL_LIGHTING_BIT); |
| 104 |
> |
glDisable(GL_LIGHTING); |
| 105 |
> |
glDisable(GL_DITHER); |
| 106 |
> |
glShadeModel(GL_FLAT); |
| 107 |
> |
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
| 108 |
> |
/* don't actually write depth */ |
| 109 |
> |
glDepthMask(GL_FALSE); |
| 110 |
> |
/* draw only selected channels */ |
| 111 |
> |
glColorMask(r>=0, g>=0, b>=0, a>=0); |
| 112 |
> |
glColor4ub(r&0xff, g&0xff, b&0xff, a&0xff); |
| 113 |
> |
glCallList(gmPortals); /* draw them portals */ |
| 114 |
> |
glPopAttrib(); |
| 115 |
> |
} |
| 116 |
> |
|
| 117 |
> |
|
| 118 |
> |
gmDepthLimit(dl, vorg, vdir) /* compute approximate depth limits for view */ |
| 119 |
|
double dl[2]; |
| 120 |
|
FVECT vorg, vdir; |
| 121 |
|
{ |
| 124 |
|
register int i; |
| 125 |
|
|
| 126 |
|
dl[0] = FHUGE; dl[1] = 0.; |
| 127 |
< |
FORALLOCT(otCurrent, i) { |
| 128 |
< |
VSUB(v, otCurrent[i].cent, vorg); |
| 127 |
> |
FORALLGEOM(gmCurrent, i) { |
| 128 |
> |
VSUB(v, gmCurrent[i].cent, vorg); |
| 129 |
|
dcent = DOT(v, vdir); |
| 130 |
< |
if (dl[0] > dcent-otCurrent[i].rad) |
| 131 |
< |
dl[0] = dcent-otCurrent[i].rad; |
| 132 |
< |
if (dl[1] < dcent+otCurrent[i].rad) |
| 133 |
< |
dl[1] = dcent+otCurrent[i].rad; |
| 130 |
> |
if (dl[0] > dcent-gmCurrent[i].rad) |
| 131 |
> |
dl[0] = dcent-gmCurrent[i].rad; |
| 132 |
> |
if (dl[1] < dcent+gmCurrent[i].rad) |
| 133 |
> |
dl[1] = dcent+gmCurrent[i].rad; |
| 134 |
|
} |
| 135 |
|
if (dl[0] < 0.) |
| 136 |
|
dl[0] = 0.; |
| 137 |
+ |
} |
| 138 |
+ |
|
| 139 |
+ |
|
| 140 |
+ |
gmNewPortal(pflist) /* add portal file(s) to our new list */ |
| 141 |
+ |
char *pflist; |
| 142 |
+ |
{ |
| 143 |
+ |
register int i, j; |
| 144 |
+ |
char newfile[128]; |
| 145 |
+ |
|
| 146 |
+ |
if (pflist == NULL) |
| 147 |
+ |
return; |
| 148 |
+ |
while (*pflist) { |
| 149 |
+ |
atos(newfile, sizeof(newfile), pflist); |
| 150 |
+ |
if (!*newfile) |
| 151 |
+ |
break; |
| 152 |
+ |
pflist = sskip(pflist); |
| 153 |
+ |
FORALLPORT(newportlist,i) |
| 154 |
+ |
if (!strcmp(newportlist[i], newfile)) |
| 155 |
+ |
goto endloop; /* in list already */ |
| 156 |
+ |
if (i >= MAXPORT) { |
| 157 |
+ |
error(WARNING, "too many portals -- ignoring extra"); |
| 158 |
+ |
return; |
| 159 |
+ |
} |
| 160 |
+ |
newportlist[i] = savestr(newfile); |
| 161 |
+ |
endloop:; |
| 162 |
+ |
} |
| 163 |
+ |
} |
| 164 |
+ |
|
| 165 |
+ |
|
| 166 |
+ |
static int |
| 167 |
+ |
sstrcmp(ss0, ss1) |
| 168 |
+ |
char **ss0, **ss1; |
| 169 |
+ |
{ |
| 170 |
+ |
return(strcmp(*ss0, *ss1)); |
| 171 |
+ |
} |
| 172 |
+ |
|
| 173 |
+ |
|
| 174 |
+ |
int |
| 175 |
+ |
gmEndPortal() /* close portal list and return GL list */ |
| 176 |
+ |
{ |
| 177 |
+ |
register int n; |
| 178 |
+ |
|
| 179 |
+ |
FORALLPORT(newportlist, n); |
| 180 |
+ |
if (!n) { /* free old GL list */ |
| 181 |
+ |
if (gmPortals) |
| 182 |
+ |
glDeleteLists(gmPortals, 1); |
| 183 |
+ |
gmPortals = 0; |
| 184 |
+ |
} else |
| 185 |
+ |
qsort(newportlist, n, sizeof(char *), sstrcmp); |
| 186 |
+ |
FORALLPORT(newportlist, n) /* compare sorted lists */ |
| 187 |
+ |
if (curportlist[n] == NULL || |
| 188 |
+ |
strcmp(curportlist[n],newportlist[n])) { |
| 189 |
+ |
/* load new list */ |
| 190 |
+ |
if (gmPortals) |
| 191 |
+ |
glDeleteLists(gmPortals, 1); |
| 192 |
+ |
FORALLPORT(newportlist, n); |
| 193 |
+ |
dolights = 0; |
| 194 |
+ |
domats = 0; |
| 195 |
+ |
gmPortals = rgl_filelist(n, newportlist); |
| 196 |
+ |
break; |
| 197 |
+ |
} |
| 198 |
+ |
FORALLPORT(curportlist, n) /* free old file list */ |
| 199 |
+ |
freestr(curportlist[n]); |
| 200 |
+ |
bcopy((char *)newportlist, (char *)curportlist, sizeof(newportlist)); |
| 201 |
+ |
bzero((char *)newportlist, sizeof(newportlist)); |
| 202 |
+ |
return(gmPortals); /* return GL list id */ |
| 203 |
|
} |
