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#endif |
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/* |
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* Octree drawing operations for OpenGL driver. |
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* Geometry drawing operations for OpenGL driver. |
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*/ |
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#include "radogl.h" |
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#include "rhdriver.h" |
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|
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#ifndef MAXOCTREE |
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#define MAXOCTREE 8 /* maximum octrees to load at once */ |
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#ifndef MAXGEO |
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#define MAXGEO 8 /* maximum geometry list length */ |
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#endif |
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#ifndef MAXPORT |
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#define MAXPORT (MAXGEO*4) /* maximum number of portal files */ |
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#endif |
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|
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static struct otEntry { |
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char *otfile; /* octree file name */ |
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int gmPortals = 0; /* current portal GL list id */ |
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static char *curportlist[MAXPORT]; /* current portal list */ |
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static char *newportlist[MAXPORT]; /* new portal file list */ |
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|
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static struct gmEntry { |
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char *gfile; /* geometry file name */ |
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FVECT cent; /* centroid */ |
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FLOAT rad; /* radius */ |
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int listid; /* display list identifier */ |
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} otCurrent[MAXOCTREE], otNext[MAXOCTREE]; /* current and next list */ |
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} gmCurrent[MAXGEO], gmNext[MAXGEO]; /* current and next list */ |
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|
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#define FORALLOCT(ot,i) for (i=0;i<MAXOCTREE&&ot[i].otfile!=NULL;i++) |
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#define FORALLGEOM(ot,i) for (i=0;i<MAXGEO&&ot[i].gfile!=NULL;i++) |
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|
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#define FORALLPORT(pl,i) for (i=0;i<MAXPORT&&pl[i]!=NULL;i++) |
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|
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otNewOctree(fname) /* add new octree to next list */ |
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char *fname; |
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extern char *atos(), *sskip(), *sskip2(); |
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|
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|
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gmNewGeom(file) /* add new geometry to next list */ |
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char *file; |
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{ |
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register int i, j; |
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/* check if already in next list */ |
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FORALLOCT(otNext, i) |
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if (!strcmp(fname, otNext[i].otfile)) |
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FORALLGEOM(gmNext, i) |
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if (!strcmp(file, gmNext[i].gfile)) |
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return; |
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if (i >= MAXOCTREE) { |
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if (i >= MAXGEO) { |
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error(WARNING, "too many section octrees -- ignoring extra"); |
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return; |
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} |
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/* check if copy in current list */ |
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FORALLOCT(otCurrent, j) |
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if (!strcmp(fname, otCurrent[j].otfile)) { |
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copystruct(&otNext[i], &otCurrent[i]); |
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FORALLGEOM(gmCurrent, j) |
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if (!strcmp(file, gmCurrent[j].gfile)) { |
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> |
copystruct(&gmNext[i], &gmCurrent[j]); |
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return; |
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} |
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/* else load new octree */ |
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< |
otNext[i].otfile = fname; |
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gmNext[i].gfile = file; |
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dolights = 0; |
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otNext[i].listid = rgl_octlist(fname, otNext[i].cent, &otNext[i].rad); |
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> |
domats = 1; |
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> |
gmNext[i].listid = rgl_octlist(file, gmNext[i].cent, &gmNext[i].rad); |
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#ifdef DEBUG |
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fprintf(stderr, "Loaded octree \"%s\" into listID %d with radius %f\n", |
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fname, otNext[i].listid, otNext[i].rad); |
64 |
> |
file, gmNext[i].listid, gmNext[i].rad); |
65 |
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#endif |
66 |
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} |
67 |
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|
68 |
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|
69 |
< |
otEndOctree() /* make next list current */ |
69 |
> |
gmEndGeom() /* make next list current */ |
70 |
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{ |
71 |
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register int i, j; |
72 |
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|
73 |
< |
FORALLOCT(otCurrent, i) { |
74 |
< |
FORALLOCT(otNext, j) |
75 |
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if (otNext[j].listid == otCurrent[i].listid) |
73 |
> |
FORALLGEOM(gmCurrent, i) { |
74 |
> |
FORALLGEOM(gmNext, j) |
75 |
> |
if (gmNext[j].listid == gmCurrent[i].listid) |
76 |
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break; |
77 |
< |
if (j >= MAXOCTREE || otNext[j].otfile == NULL) |
78 |
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glDeleteLists(otCurrent[i].listid, 1); /* not found */ |
77 |
> |
if (j >= MAXGEO || gmNext[j].gfile == NULL) |
78 |
> |
glDeleteLists(gmCurrent[i].listid, 1); /* not found */ |
79 |
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} |
80 |
< |
bcopy((char *)otNext, (char *)otCurrent, sizeof(otNext)); |
81 |
< |
otNext[0].otfile = NULL; |
80 |
> |
bcopy((char *)gmNext, (char *)gmCurrent, sizeof(gmNext)); |
81 |
> |
bzero((char *)gmNext, sizeof(gmNext)); |
82 |
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} |
83 |
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|
84 |
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|
85 |
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int |
86 |
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otDrawOctrees() /* draw current list of octrees */ |
86 |
> |
gmDrawGeom(clearports) /* draw current list of octrees (and ports) */ |
87 |
> |
int clearports; |
88 |
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{ |
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 |
> |
if (!n | !clearports | !gmPortals) |
94 |
> |
return(n); |
95 |
> |
/* mark alpha channel over the portals */ |
96 |
> |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
97 |
> |
glDepthMask(GL_FALSE); |
98 |
> |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE); |
99 |
> |
glClear(GL_COLOR_BUFFER_BIT); |
100 |
> |
glColor4ub(0, 0, 0, 0xff); /* write alpha buffer as mask */ |
101 |
> |
glCallList(gmPortals); /* draw them portals */ |
102 |
> |
glPopAttrib(); |
103 |
> |
return(n); |
104 |
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} |
105 |
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|
106 |
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|
107 |
< |
otDepthLimit(dl, vorg, vdir) /* compute approximate depth limits for view */ |
107 |
> |
gmDepthLimit(dl, vorg, vdir) /* compute approximate depth limits for view */ |
108 |
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double dl[2]; |
109 |
|
FVECT vorg, vdir; |
110 |
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{ |
113 |
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register int i; |
114 |
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|
115 |
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dl[0] = FHUGE; dl[1] = 0.; |
116 |
< |
FORALLOCT(otCurrent, i) { |
117 |
< |
VSUB(v, otCurrent[i].cent, vorg); |
116 |
> |
FORALLGEOM(gmCurrent, i) { |
117 |
> |
VSUB(v, gmCurrent[i].cent, vorg); |
118 |
|
dcent = DOT(v, vdir); |
119 |
< |
if (dl[0] > dcent-otCurrent[i].rad) |
120 |
< |
dl[0] = dcent-otCurrent[i].rad; |
121 |
< |
if (dl[1] < dcent+otCurrent[i].rad) |
122 |
< |
dl[1] = dcent+otCurrent[i].rad; |
119 |
> |
if (dl[0] > dcent-gmCurrent[i].rad) |
120 |
> |
dl[0] = dcent-gmCurrent[i].rad; |
121 |
> |
if (dl[1] < dcent+gmCurrent[i].rad) |
122 |
> |
dl[1] = dcent+gmCurrent[i].rad; |
123 |
|
} |
124 |
|
if (dl[0] < 0.) |
125 |
|
dl[0] = 0.; |
126 |
+ |
} |
127 |
+ |
|
128 |
+ |
|
129 |
+ |
gmNewPortal(pflist) /* add portal file(s) to our new list */ |
130 |
+ |
char *pflist; |
131 |
+ |
{ |
132 |
+ |
register int i, j; |
133 |
+ |
char newfile[128]; |
134 |
+ |
|
135 |
+ |
if (pflist == NULL) |
136 |
+ |
return; |
137 |
+ |
while (*pflist) { |
138 |
+ |
atos(newfile, sizeof(newfile), pflist); |
139 |
+ |
if (!*newfile) |
140 |
+ |
break; |
141 |
+ |
pflist = sskip(pflist); |
142 |
+ |
FORALLPORT(newportlist,i) |
143 |
+ |
if (!strcmp(newportlist[i], newfile)) |
144 |
+ |
goto endloop; /* in list already */ |
145 |
+ |
if (i >= MAXPORT) { |
146 |
+ |
error(WARNING, "too many portals -- ignoring extra"); |
147 |
+ |
return; |
148 |
+ |
} |
149 |
+ |
newportlist[i] = savestr(newfile); |
150 |
+ |
endloop:; |
151 |
+ |
} |
152 |
+ |
} |
153 |
+ |
|
154 |
+ |
|
155 |
+ |
static int |
156 |
+ |
sstrcmp(ss0, ss1) |
157 |
+ |
char **ss0, **ss1; |
158 |
+ |
{ |
159 |
+ |
return(strcmp(*ss0, *ss1)); |
160 |
+ |
} |
161 |
+ |
|
162 |
+ |
|
163 |
+ |
int |
164 |
+ |
gmEndPortal() /* close portal list and return GL list */ |
165 |
+ |
{ |
166 |
+ |
register int n; |
167 |
+ |
|
168 |
+ |
FORALLPORT(newportlist, n); |
169 |
+ |
if (!n) { /* free old GL list */ |
170 |
+ |
if (gmPortals) |
171 |
+ |
glDeleteLists(gmPortals, 1); |
172 |
+ |
gmPortals = 0; |
173 |
+ |
} else |
174 |
+ |
qsort(newportlist, n, sizeof(char *), sstrcmp); |
175 |
+ |
FORALLPORT(newportlist, n) /* compare sorted lists */ |
176 |
+ |
if (curportlist[n] == NULL || |
177 |
+ |
strcmp(curportlist[n],newportlist[n])) { |
178 |
+ |
/* load new list */ |
179 |
+ |
if (gmPortals) |
180 |
+ |
glDeleteLists(gmPortals, 1); |
181 |
+ |
FORALLPORT(newportlist, n); |
182 |
+ |
dolights = 0; |
183 |
+ |
domats = 0; |
184 |
+ |
gmPortals = rgl_filelist(n, newportlist); |
185 |
+ |
break; |
186 |
+ |
} |
187 |
+ |
FORALLPORT(curportlist, n) /* free old file list */ |
188 |
+ |
freestr(curportlist[n]); |
189 |
+ |
bcopy((char *)newportlist, (char *)curportlist, sizeof(newportlist)); |
190 |
+ |
bzero((char *)newportlist, sizeof(newportlist)); |
191 |
+ |
return(gmPortals); /* return GL list id */ |
192 |
|
} |