1 |
gwlarson |
3.1 |
#ifndef lint |
2 |
greg |
3.13 |
static const char RCSid[] = "$Id$"; |
3 |
gwlarson |
3.1 |
#endif |
4 |
|
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/* |
5 |
|
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* Program to display Radiance scene using OpenGL. |
6 |
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*/ |
7 |
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8 |
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#include <sys/types.h> |
9 |
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#include <GL/glx.h> |
10 |
gwlarson |
3.4 |
#ifndef NOSTEREO |
11 |
|
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#include <X11/extensions/SGIStereo.h> |
12 |
|
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#endif |
13 |
gwlarson |
3.1 |
#include <ctype.h> |
14 |
greg |
3.13 |
#include <time.h> |
15 |
gwlarson |
3.11 |
#include "radogl.h" |
16 |
|
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#include "view.h" |
17 |
|
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#include "paths.h" |
18 |
gwlarson |
3.1 |
#include "glradicon.h" |
19 |
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20 |
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#ifndef MAXVIEW |
21 |
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#define MAXVIEW 63 /* maximum number of standard views */ |
22 |
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#endif |
23 |
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#ifndef MAXSCENE |
24 |
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#define MAXSCENE 127 /* maximum number of scene files */ |
25 |
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#endif |
26 |
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27 |
|
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#define ZOOMPCT 9 /* percent to zoom at a time */ |
28 |
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29 |
|
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#define MOVPCT 7 /* percent distance to move /frame */ |
30 |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
31 |
|
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
32 |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
33 |
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34 |
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#define BORWIDTH 5 /* border width */ |
35 |
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36 |
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#define ourscreen DefaultScreen(ourdisplay) |
37 |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
38 |
|
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
39 |
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ButtonPressMask|ButtonReleaseMask) |
40 |
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41 |
|
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#define levptr(etype) ((etype *)¤tevent) |
42 |
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43 |
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XEvent currentevent; /* current event */ |
44 |
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45 |
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int mapped = 0; /* window is mapped? */ |
46 |
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unsigned long ourblack=0, ourwhite=~0; |
47 |
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48 |
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Display *ourdisplay = NULL; /* our display */ |
49 |
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XVisualInfo *ourvinf; /* our visual information */ |
50 |
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Window gwind = 0; /* our graphics window */ |
51 |
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int hres, vres; /* rendering window dimensions */ |
52 |
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int maxhres, maxvres; /* maximum given dimensions */ |
53 |
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GLXContext gctx; /* our GLX context */ |
54 |
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55 |
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double pwidth, pheight; /* pixel dimensions (mm) */ |
56 |
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57 |
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int headlocked = 0; /* lock vertical motion */ |
58 |
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59 |
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struct { |
60 |
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char *nam; /* view name (NULL if none) */ |
61 |
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VIEW *v; /* parameters (NULL term.) */ |
62 |
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} vwl[MAXVIEW+1]; /* our list of views */ |
63 |
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64 |
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int currentview = 0; /* current view number */ |
65 |
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VIEW thisview = STDVIEW; /* displayed view */ |
66 |
gwlarson |
3.4 |
double eyedist = 1; /* interocular distance */ |
67 |
gwlarson |
3.1 |
VIEW lastview; /* last recorded view */ |
68 |
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69 |
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char *progname; /* global argv[0] */ |
70 |
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char *radfile; /* rad input file */ |
71 |
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char *scene[MAXSCENE+1]; /* material and scene file list */ |
72 |
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int nscenef = 0; /* number of scene files */ |
73 |
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char *octree; /* octree name (NULL if unnec.) */ |
74 |
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75 |
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int rtpd[3]; /* rtrace process descriptors */ |
76 |
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|
77 |
gwlarson |
3.4 |
int silent = 0; /* run rad silently? */ |
78 |
gwlarson |
3.1 |
int backvis = 1; /* back faces visible? */ |
79 |
gwlarson |
3.4 |
int stereo = 0; /* do stereo? */ |
80 |
gwlarson |
3.1 |
|
81 |
gwlarson |
3.4 |
#ifdef NOSTEREO |
82 |
|
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#define setstereobuf(bid) 0 |
83 |
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#else |
84 |
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#define setstereobuf(bid) (glXWaitGL(), \ |
85 |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
86 |
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glXWaitX()) |
87 |
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#endif |
88 |
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89 |
gwlarson |
3.1 |
int displist; /* our scene display list */ |
90 |
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91 |
gwlarson |
3.5 |
int no_render = 0; /* don't rerender */ |
92 |
gwlarson |
3.2 |
|
93 |
gwlarson |
3.4 |
#ifdef BSD |
94 |
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#define strchr index |
95 |
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#endif |
96 |
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97 |
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extern char *strchr(), *fgets(), *fgetline(), *atos(), *scan4var(); |
98 |
gwlarson |
3.1 |
extern int nowarn; /* turn warnings off? */ |
99 |
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extern time_t time(); |
100 |
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101 |
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102 |
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main(argc, argv) |
103 |
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int argc; |
104 |
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char *argv[]; |
105 |
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{ |
106 |
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char *viewsel = NULL; |
107 |
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long vwintvl = 0; |
108 |
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int i; |
109 |
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110 |
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progname = argv[0]; |
111 |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
112 |
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switch (argv[i][1]) { |
113 |
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case 'v': |
114 |
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viewsel = argv[++i]; |
115 |
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break; |
116 |
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case 'w': |
117 |
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nowarn = !nowarn; |
118 |
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break; |
119 |
gwlarson |
3.4 |
case 's': |
120 |
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silent = !silent; |
121 |
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break; |
122 |
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case 'S': |
123 |
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stereo = !stereo; |
124 |
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break; |
125 |
gwlarson |
3.1 |
case 'c': |
126 |
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vwintvl = atoi(argv[++i]); |
127 |
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break; |
128 |
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case 'b': |
129 |
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backvis = !backvis; |
130 |
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break; |
131 |
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default: |
132 |
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goto userr; |
133 |
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} |
134 |
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if (i >= argc) |
135 |
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goto userr; |
136 |
gwlarson |
3.4 |
#ifdef NOSTEREO |
137 |
|
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if (stereo) |
138 |
|
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error(INTERNAL, "stereo not supported in this version"); |
139 |
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#endif |
140 |
gwlarson |
3.1 |
/* run rad and get views */ |
141 |
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runrad(argc-i, argv+i); |
142 |
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/* check view */ |
143 |
gwlarson |
3.3 |
if (viewsel != NULL) |
144 |
|
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if (viewsel[0] == '-') { |
145 |
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char *ve = viewsel; |
146 |
|
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if (!sscanview(&thisview, viewsel) || |
147 |
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(ve = setview(&thisview)) != NULL) { |
148 |
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fprintf(stderr, "%s: bad view: %s\n", |
149 |
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progname, ve); |
150 |
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quit(1); |
151 |
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} |
152 |
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currentview = -1; |
153 |
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} else if ((currentview = findvw(viewsel)) < 0) { |
154 |
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fprintf(stderr, "%s: no such view: %s\n", |
155 |
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progname, viewsel); |
156 |
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quit(1); |
157 |
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} |
158 |
gwlarson |
3.1 |
/* open GL */ |
159 |
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dev_open(radfile = argv[i]); |
160 |
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/* load octree or scene files */ |
161 |
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if (octree != NULL) { |
162 |
gwlarson |
3.12 |
displist = rgl_octlist(octree, NULL, NULL, NULL); |
163 |
gwlarson |
3.1 |
startrtrace(octree); |
164 |
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} else |
165 |
gwlarson |
3.12 |
displist = rgl_filelist(nscenef, scene, NULL); |
166 |
gwlarson |
3.1 |
/* set initial view */ |
167 |
gwlarson |
3.3 |
dev_view(currentview < 0 ? &thisview : vwl[currentview].v); |
168 |
gwlarson |
3.1 |
/* input/render loop */ |
169 |
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while (dev_input(vwintvl)) |
170 |
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; |
171 |
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/* all done */ |
172 |
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quit(0); |
173 |
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userr: |
174 |
gwlarson |
3.8 |
fprintf(stderr, |
175 |
|
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"Usage: %s [-w][-s][-b][-S][-v view] rfile [VAR=value]..\n", |
176 |
gwlarson |
3.1 |
argv[0]); |
177 |
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quit(1); |
178 |
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} |
179 |
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180 |
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181 |
greg |
3.13 |
void |
182 |
gwlarson |
3.1 |
quit(code) /* exit gracefully */ |
183 |
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int code; |
184 |
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{ |
185 |
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if (ourdisplay != NULL) |
186 |
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dev_close(); |
187 |
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if (rtpd[2] > 0) { |
188 |
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if (close_process(rtpd) > 0) |
189 |
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wputs("bad exit status from rtrace\n"); |
190 |
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rtpd[2] = 0; |
191 |
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} |
192 |
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exit(code); |
193 |
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} |
194 |
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195 |
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196 |
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startrtrace(octname) /* start rtrace on octname */ |
197 |
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char *octname; |
198 |
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{ |
199 |
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static char *av[12] = {"rtrace", "-h", "-fff", "-ld+", |
200 |
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"-opL", "-x", "1"}; |
201 |
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int ac = 7; |
202 |
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203 |
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if (nowarn) av[ac++] = "-w-"; |
204 |
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av[ac++] = octname; |
205 |
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av[ac] = NULL; |
206 |
|
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if (open_process(rtpd, av) <= 0) |
207 |
|
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error(SYSTEM, "cannot start rtrace process"); |
208 |
|
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} |
209 |
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210 |
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211 |
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runrad(ac, av) /* run rad and load variables */ |
212 |
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int ac; |
213 |
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char **av; |
214 |
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{ |
215 |
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static char optfile[] = TEMPLATE; |
216 |
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int nvn = 0, nvv = 0; |
217 |
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FILE *fp; |
218 |
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int cval; |
219 |
|
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register char *cp; |
220 |
|
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char radcomm[256], buf[128], nam[32]; |
221 |
|
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/* set rad commmand */ |
222 |
|
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strcpy(radcomm, "rad -w -v 0 "); /* look out below! */ |
223 |
|
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cp = radcomm + 19; |
224 |
gwlarson |
3.4 |
if (silent) { |
225 |
|
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strcpy(cp, "-s "); |
226 |
|
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cp += 3; |
227 |
|
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} |
228 |
gwlarson |
3.1 |
while (ac--) { |
229 |
|
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strcpy(cp, *av++); |
230 |
|
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while (*cp) cp++; |
231 |
|
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*cp++ = ' '; |
232 |
|
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} |
233 |
|
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strcpy(cp, "OPTFILE="); /* create temporary options file */ |
234 |
|
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strcpy(cp+8, mktemp(optfile)); |
235 |
|
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if (system(radcomm)) /* update octree */ |
236 |
|
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error(USER, "error executing rad command"); |
237 |
|
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/* replace "-v 0" with "-n -e -s -V" */ |
238 |
|
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strcpy(radcomm+7, "-n -e -s -V"); |
239 |
|
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radcomm[18] = ' '; |
240 |
|
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if ((fp = popen(radcomm, "r")) == NULL) |
241 |
|
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error(SYSTEM, "cannot start rad command"); |
242 |
|
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buf[0] = '\0'; /* read variables alphabetically */ |
243 |
|
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/* get exposure */ |
244 |
|
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if ((cp = scan4var(buf, sizeof(buf), "EXPOSURE", fp)) != NULL) { |
245 |
|
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expval = atof(cp); |
246 |
|
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if (*cp == '-' | *cp == '+') |
247 |
|
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expval = pow(2., expval); |
248 |
gwlarson |
3.3 |
expval *= 0.5; /* compensate for local shading */ |
249 |
gwlarson |
3.1 |
} |
250 |
gwlarson |
3.4 |
/* look for eye separation */ |
251 |
|
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if ((cp = scan4var(buf, sizeof(buf), "EYESEP", fp)) != NULL) |
252 |
|
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eyedist = atof(cp); |
253 |
gwlarson |
3.1 |
/* look for materials */ |
254 |
|
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while ((cp = scan4var(buf, sizeof(buf), "materials", fp)) != NULL) { |
255 |
|
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nscenef += wordstring(scene+nscenef, cp); |
256 |
|
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buf[0] = '\0'; |
257 |
|
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} |
258 |
|
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/* look for octree */ |
259 |
|
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if ((cp = scan4var(buf, sizeof(buf), "OCTREE", fp)) != NULL) |
260 |
|
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octree = savqstr(cp); |
261 |
|
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/* look for scene files */ |
262 |
|
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while ((cp = scan4var(buf, sizeof(buf), "scene", fp)) != NULL) { |
263 |
|
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nscenef += wordstring(scene+nscenef, cp); |
264 |
|
|
buf[0] = '\0'; |
265 |
|
|
} |
266 |
|
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/* load view names */ |
267 |
|
|
while ((cp = scan4var(buf, sizeof(buf), "view", fp)) != NULL) { |
268 |
|
|
if (nvn >= MAXVIEW) |
269 |
|
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error(INTERNAL, "too many views in rad file"); |
270 |
|
|
vwl[nvn++].nam = *cp == '-' ? (char *)NULL : |
271 |
|
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savqstr(atos(nam, sizeof(nam), cp)); |
272 |
|
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buf[0] = '\0'; |
273 |
|
|
} |
274 |
|
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/* load actual views */ |
275 |
|
|
do |
276 |
|
|
if (isview(buf)) { |
277 |
|
|
vwl[nvv].v = (VIEW *)bmalloc(sizeof(VIEW)); |
278 |
|
|
copystruct(vwl[nvv].v, &stdview); |
279 |
|
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sscanview(vwl[nvv].v, buf); |
280 |
|
|
if ((cp = setview(vwl[nvv++].v)) != NULL) { |
281 |
|
|
fprintf(stderr, "%s: bad view %d - %s\n", |
282 |
|
|
progname, nvv, cp); |
283 |
|
|
quit(1); |
284 |
|
|
} |
285 |
|
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} |
286 |
|
|
while (fgets(buf, sizeof(buf), fp) != NULL); |
287 |
|
|
if (nvv != nvn) |
288 |
|
|
error(INTERNAL, "view miscount in runrad"); |
289 |
|
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pclose(fp); |
290 |
|
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/* open options file */ |
291 |
|
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if ((fp = fopen(optfile, "r")) == NULL) |
292 |
|
|
error(SYSTEM, "cannot open options file"); |
293 |
gwlarson |
3.4 |
/* get relevant options */ |
294 |
gwlarson |
3.1 |
while (fgets(buf, sizeof(buf), fp) != NULL) |
295 |
gwlarson |
3.4 |
if (!strncmp(buf, "-av ", 4)) |
296 |
gwlarson |
3.1 |
setcolor(ambval, atof(buf+4), |
297 |
|
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atof(sskip2(buf+4,1)), |
298 |
|
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atof(sskip2(buf+4,2))); |
299 |
gwlarson |
3.4 |
else if (backvis && !strncmp(buf, "-bv", 3) && |
300 |
gwlarson |
3.10 |
(!buf[3] || strchr("0-FfNn \n",buf[3])!=NULL)) |
301 |
gwlarson |
3.4 |
backvis = 0; |
302 |
gwlarson |
3.1 |
fclose(fp); |
303 |
|
|
unlink(optfile); /* delete options file */ |
304 |
|
|
} |
305 |
|
|
|
306 |
|
|
|
307 |
|
|
int |
308 |
|
|
findvw(nm) /* find named view */ |
309 |
|
|
register char *nm; |
310 |
|
|
{ |
311 |
|
|
register int n; |
312 |
|
|
|
313 |
|
|
if (*nm >= '1' & *nm <= '9' && |
314 |
|
|
(n = atoi(nm)-1) <= MAXVIEW && vwl[n].v != NULL) |
315 |
|
|
return(n); |
316 |
|
|
for (n = 0; vwl[n].v != NULL; n++) |
317 |
|
|
if (vwl[n].nam != NULL && !strcmp(nm, vwl[n].nam)) |
318 |
|
|
return(n); |
319 |
|
|
return(-1); |
320 |
|
|
} |
321 |
|
|
|
322 |
|
|
|
323 |
|
|
int |
324 |
|
|
varmatch(s, vn) /* match line to variable */ |
325 |
|
|
register char *s, *vn; |
326 |
|
|
{ |
327 |
|
|
register int c; |
328 |
|
|
|
329 |
|
|
for ( ; *vn && *s == *vn; s++, vn++) |
330 |
|
|
; |
331 |
|
|
while (isspace(*s)) |
332 |
|
|
s++; |
333 |
|
|
if (*s == '=') |
334 |
|
|
return(*vn); |
335 |
|
|
while (!(c = toupper(*s++) - toupper(*vn)) && *vn++) |
336 |
|
|
; |
337 |
|
|
return(c); |
338 |
|
|
} |
339 |
|
|
|
340 |
|
|
|
341 |
|
|
char * |
342 |
|
|
scan4var(buf, buflen, vname, fp) /* scan for variable from fp */ |
343 |
|
|
char *buf; |
344 |
|
|
int buflen; |
345 |
|
|
char *vname; |
346 |
|
|
FILE *fp; |
347 |
|
|
{ |
348 |
|
|
int cval; |
349 |
|
|
register char *cp; |
350 |
|
|
/* search out matching line */ |
351 |
|
|
while ((cval = varmatch(buf, vname))) { |
352 |
|
|
if (cval > 0) /* gone too far? */ |
353 |
|
|
return(NULL); |
354 |
|
|
buf[0] = '\0'; /* else get next line */ |
355 |
|
|
if (fgetline(buf, buflen, fp) == NULL) |
356 |
|
|
return(NULL); |
357 |
|
|
} |
358 |
|
|
/* skip variable name and '=' */ |
359 |
|
|
for (cp = buf; *cp++ != '='; ) |
360 |
|
|
; |
361 |
|
|
while (isspace(*cp)) cp++; |
362 |
|
|
return(cp); |
363 |
|
|
} |
364 |
|
|
|
365 |
|
|
|
366 |
|
|
dev_open(id) /* initialize GLX driver */ |
367 |
|
|
char *id; |
368 |
|
|
{ |
369 |
|
|
static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,4, |
370 |
|
|
GLX_GREEN_SIZE,4, GLX_BLUE_SIZE,4, |
371 |
|
|
GLX_DOUBLEBUFFER, GLX_DEPTH_SIZE,15, None}; |
372 |
|
|
XSetWindowAttributes ourwinattr; |
373 |
|
|
XWMHints ourxwmhints; |
374 |
|
|
/* open display server */ |
375 |
|
|
ourdisplay = XOpenDisplay(NULL); |
376 |
|
|
if (ourdisplay == NULL) |
377 |
|
|
error(USER, "cannot open X-windows; DISPLAY variable set?\n"); |
378 |
|
|
/* find a usable visual */ |
379 |
|
|
ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
380 |
|
|
if (ourvinf == NULL) |
381 |
|
|
error(USER, "no suitable visuals available"); |
382 |
|
|
/* get a context */ |
383 |
|
|
gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE); |
384 |
|
|
/* open window */ |
385 |
|
|
ourwinattr.background_pixel = ourblack; |
386 |
|
|
ourwinattr.border_pixel = ourblack; |
387 |
|
|
ourwinattr.event_mask = ourmask; |
388 |
|
|
/* this is stupid */ |
389 |
|
|
ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
390 |
|
|
ourvinf->visual, AllocNone); |
391 |
|
|
gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
392 |
|
|
DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
393 |
|
|
DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
394 |
|
|
BORWIDTH, ourvinf->depth, InputOutput, ourvinf->visual, |
395 |
|
|
CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
396 |
|
|
if (gwind == 0) |
397 |
|
|
error(SYSTEM, "cannot create window\n"); |
398 |
|
|
XStoreName(ourdisplay, gwind, id); |
399 |
gwlarson |
3.4 |
#ifndef NOSTEREO |
400 |
|
|
if (stereo) /* check if stereo working */ |
401 |
|
|
switch (XSGIQueryStereoMode(ourdisplay, gwind)) { |
402 |
|
|
case STEREO_TOP: |
403 |
|
|
case STEREO_BOTTOM: |
404 |
|
|
break; |
405 |
|
|
case STEREO_OFF: |
406 |
|
|
error(USER, |
407 |
|
|
"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first"); |
408 |
|
|
case X_STEREO_UNSUPPORTED: |
409 |
|
|
error(USER, "stereo not supported on this screen"); |
410 |
|
|
default: |
411 |
|
|
error(INTERNAL, "unknown stereo mode"); |
412 |
|
|
} |
413 |
|
|
#endif |
414 |
gwlarson |
3.1 |
/* set window manager hints */ |
415 |
|
|
ourxwmhints.flags = InputHint|IconPixmapHint; |
416 |
|
|
ourxwmhints.input = True; |
417 |
|
|
ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
418 |
|
|
gwind, glradicon_bits, glradicon_width, glradicon_height); |
419 |
|
|
XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
420 |
|
|
/* set GLX context */ |
421 |
|
|
glXMakeCurrent(ourdisplay, gwind, gctx); |
422 |
|
|
glEnable(GL_DEPTH_TEST); |
423 |
|
|
glDepthFunc(GL_LESS); |
424 |
|
|
glShadeModel(GL_SMOOTH); |
425 |
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
426 |
gwlarson |
3.7 |
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
427 |
gwlarson |
3.1 |
glEnable(GL_LIGHTING); |
428 |
gwlarson |
3.9 |
glFrontFace(GL_CCW); |
429 |
|
|
glCullFace(GL_BACK); |
430 |
gwlarson |
3.1 |
if (backvis) |
431 |
|
|
glDisable(GL_CULL_FACE); |
432 |
gwlarson |
3.9 |
else |
433 |
gwlarson |
3.1 |
glEnable(GL_CULL_FACE); |
434 |
|
|
glDrawBuffer(GL_BACK); |
435 |
|
|
/* figure out sensible view */ |
436 |
|
|
pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
437 |
|
|
DisplayWidth(ourdisplay, ourscreen); |
438 |
|
|
pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
439 |
|
|
DisplayHeight(ourdisplay, ourscreen); |
440 |
gwlarson |
3.4 |
if (stereo) { /* set stereo mode */ |
441 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
442 |
|
|
pheight *= 2.; |
443 |
|
|
} |
444 |
gwlarson |
3.1 |
/* map the window */ |
445 |
|
|
XMapWindow(ourdisplay, gwind); |
446 |
gwlarson |
3.5 |
no_render++; |
447 |
gwlarson |
3.3 |
do |
448 |
|
|
dev_input(0); /* get resize event */ |
449 |
|
|
while (hres == 0 & vres == 0); |
450 |
gwlarson |
3.5 |
no_render--; |
451 |
gwlarson |
3.1 |
rgl_checkerr("initializing GLX"); |
452 |
|
|
} |
453 |
|
|
|
454 |
|
|
|
455 |
|
|
dev_close() /* close our display and free resources */ |
456 |
|
|
{ |
457 |
|
|
glXMakeCurrent(ourdisplay, None, NULL); |
458 |
|
|
glXDestroyContext(ourdisplay, gctx); |
459 |
|
|
XDestroyWindow(ourdisplay, gwind); |
460 |
|
|
gwind = 0; |
461 |
|
|
XCloseDisplay(ourdisplay); |
462 |
|
|
ourdisplay = NULL; |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
|
466 |
|
|
int |
467 |
|
|
dev_view(nv) /* assign new driver view */ |
468 |
|
|
register VIEW *nv; |
469 |
|
|
{ |
470 |
|
|
int newhres = hres, newvres = vres; |
471 |
|
|
double wa, va; |
472 |
|
|
/* check view legality */ |
473 |
|
|
if (nv->type != VT_PER) { |
474 |
|
|
error(COMMAND, "illegal view type"); |
475 |
|
|
nv->type = VT_PER; |
476 |
|
|
} |
477 |
|
|
if (nv->horiz > 160. | nv->vert > 160.) { |
478 |
|
|
error(COMMAND, "illegal view angle"); |
479 |
|
|
if (nv->horiz > 160.) |
480 |
|
|
nv->horiz = 160.; |
481 |
|
|
if (nv->vert > 160.) |
482 |
|
|
nv->vert = 160.; |
483 |
|
|
} |
484 |
|
|
if (hres != 0 & vres != 0) { |
485 |
|
|
wa = (vres*pheight)/(hres*pwidth); |
486 |
gwlarson |
3.2 |
va = viewaspect(nv); |
487 |
gwlarson |
3.1 |
if (va > wa+.05) { |
488 |
|
|
newvres = (pwidth/pheight)*va*newhres + .5; |
489 |
|
|
if (newvres > maxvres) { |
490 |
|
|
newvres = maxvres; |
491 |
|
|
newhres = (pheight/pwidth)/va*newvres + .5; |
492 |
|
|
} |
493 |
|
|
} else if (va < wa-.05) { |
494 |
|
|
newhres = (pheight/pwidth)/va*newvres + .5; |
495 |
|
|
if (newhres > maxhres) { |
496 |
|
|
newhres = maxhres; |
497 |
|
|
newvres = (pwidth/pheight)*va*newhres + .5; |
498 |
|
|
} |
499 |
|
|
} |
500 |
|
|
if (newhres != hres | newvres != vres) { |
501 |
gwlarson |
3.5 |
no_render++; |
502 |
gwlarson |
3.1 |
XResizeWindow(ourdisplay, gwind, newhres, newvres); |
503 |
|
|
do |
504 |
|
|
dev_input(0); /* get resize event */ |
505 |
|
|
while (newhres != hres | newvres != vres); |
506 |
gwlarson |
3.5 |
no_render--; |
507 |
gwlarson |
3.1 |
} |
508 |
|
|
} |
509 |
|
|
copystruct(&thisview, nv); |
510 |
|
|
setglpersp(&thisview); |
511 |
|
|
render(); |
512 |
|
|
return(1); |
513 |
|
|
} |
514 |
|
|
|
515 |
|
|
|
516 |
|
|
int |
517 |
|
|
dev_input(nsecs) /* get next input event */ |
518 |
|
|
int nsecs; |
519 |
|
|
{ |
520 |
|
|
#if 0 |
521 |
|
|
static time_t lasttime = 0; |
522 |
|
|
time_t thistime; |
523 |
|
|
|
524 |
|
|
if (nsecs > 0) { |
525 |
|
|
thistime = time(0); |
526 |
|
|
nsecs -= (long)(thistime - lasttime); |
527 |
|
|
lasttime = thistime; |
528 |
|
|
} |
529 |
|
|
if (nsecs > 0) |
530 |
|
|
alarm(nsecs); |
531 |
|
|
#endif |
532 |
|
|
XNextEvent(ourdisplay, levptr(XEvent)); |
533 |
|
|
switch (levptr(XEvent)->type) { |
534 |
|
|
case ConfigureNotify: |
535 |
|
|
resizewindow(levptr(XConfigureEvent)); |
536 |
|
|
break; |
537 |
|
|
case UnmapNotify: |
538 |
|
|
mapped = 0; |
539 |
|
|
break; |
540 |
|
|
case MapNotify: |
541 |
|
|
mapped = 1; |
542 |
|
|
break; |
543 |
|
|
case Expose: |
544 |
|
|
fixwindow(levptr(XExposeEvent)); |
545 |
|
|
break; |
546 |
|
|
case KeyPress: |
547 |
|
|
return(getkey(levptr(XKeyPressedEvent))); |
548 |
|
|
case ButtonPress: |
549 |
|
|
getmove(levptr(XButtonPressedEvent)); |
550 |
|
|
break; |
551 |
|
|
} |
552 |
|
|
return(1); |
553 |
|
|
} |
554 |
|
|
|
555 |
|
|
|
556 |
|
|
render() /* render our display list and swap buffers */ |
557 |
|
|
{ |
558 |
gwlarson |
3.4 |
double d; |
559 |
|
|
|
560 |
gwlarson |
3.5 |
if (!mapped | no_render) |
561 |
gwlarson |
3.1 |
return; |
562 |
|
|
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
563 |
|
|
glCallList(displist); |
564 |
gwlarson |
3.4 |
if (stereo) { /* do right eye for stereo */ |
565 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
566 |
|
|
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
567 |
|
|
glMatrixMode(GL_MODELVIEW); |
568 |
|
|
glPushMatrix(); |
569 |
|
|
d = -eyedist / sqrt(thisview.hn2); |
570 |
|
|
glTranslated(d*thisview.hvec[0], d*thisview.hvec[1], |
571 |
|
|
d*thisview.hvec[2]); |
572 |
|
|
glCallList(displist); |
573 |
|
|
glMatrixMode(GL_MODELVIEW); |
574 |
|
|
glPopMatrix(); |
575 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
576 |
|
|
} |
577 |
gwlarson |
3.1 |
glXSwapBuffers(ourdisplay, gwind); /* calls glFlush() */ |
578 |
|
|
rgl_checkerr("rendering display list"); |
579 |
|
|
} |
580 |
|
|
|
581 |
|
|
|
582 |
|
|
moveview(dx, dy, mov, orb) /* move our view */ |
583 |
|
|
int dx, dy, mov, orb; |
584 |
|
|
{ |
585 |
|
|
VIEW nv; |
586 |
|
|
FVECT odir, v1, wp; |
587 |
|
|
double d; |
588 |
|
|
register int li; |
589 |
|
|
/* start with old view */ |
590 |
|
|
copystruct(&nv, &thisview); |
591 |
|
|
/* change view direction */ |
592 |
|
|
if ((d = viewray(v1, odir, &thisview, |
593 |
|
|
(dx+.5)/hres, (dy+.5)/vres)) < -FTINY) |
594 |
|
|
return(0); /* outside view */ |
595 |
|
|
if (mov | orb) { |
596 |
|
|
if (!getintersect(wp, v1, odir, d)) |
597 |
|
|
return(0); |
598 |
|
|
VSUM(odir, wp, nv.vp, -1.); |
599 |
|
|
} else |
600 |
|
|
VCOPY(nv.vdir, odir); |
601 |
|
|
if (orb && mov) { /* orbit left/right */ |
602 |
|
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
603 |
|
|
VSUM(nv.vp, wp, odir, -1.); |
604 |
|
|
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
605 |
|
|
} else if (orb) { /* orbit up/down */ |
606 |
|
|
fcross(v1, odir, nv.vup); |
607 |
|
|
if (normalize(v1) == 0.) |
608 |
|
|
return(0); |
609 |
|
|
spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb); |
610 |
|
|
VSUM(nv.vp, wp, odir, -1.); |
611 |
|
|
spinvector(nv.vdir, nv.vdir, v1, d); |
612 |
|
|
} else if (mov) { /* move forward/backward */ |
613 |
|
|
d = MOVPCT/100. * mov; |
614 |
|
|
VSUM(nv.vp, nv.vp, odir, d); |
615 |
|
|
} |
616 |
|
|
if (!mov ^ !orb && headlocked) { /* restore head height */ |
617 |
|
|
VSUM(v1, thisview.vp, nv.vp, -1.); |
618 |
|
|
d = DOT(v1, thisview.vup); |
619 |
|
|
VSUM(nv.vp, nv.vp, thisview.vup, d); |
620 |
|
|
} |
621 |
|
|
if (setview(&nv) != NULL) |
622 |
|
|
return(0); /* illegal view */ |
623 |
|
|
dev_view(&nv); |
624 |
|
|
return(1); |
625 |
|
|
} |
626 |
|
|
|
627 |
|
|
|
628 |
greg |
3.13 |
static |
629 |
|
|
waitabit() /* pause a moment */ |
630 |
|
|
{ |
631 |
|
|
struct timespec ts; |
632 |
|
|
ts.tv_sec = 0; |
633 |
|
|
ts.tv_nsec = 5000000; |
634 |
|
|
nanosleep(&ts, NULL); |
635 |
|
|
} |
636 |
|
|
|
637 |
|
|
|
638 |
gwlarson |
3.1 |
getmove(ebut) /* get view change */ |
639 |
|
|
XButtonPressedEvent *ebut; |
640 |
|
|
{ |
641 |
|
|
int movdir = MOVDIR(ebut->button); |
642 |
|
|
int movorb = MOVORB(ebut->state); |
643 |
|
|
int moved = 0; |
644 |
|
|
Window rootw, childw; |
645 |
|
|
int rootx, rooty, wx, wy; |
646 |
|
|
unsigned int statemask; |
647 |
|
|
|
648 |
gwlarson |
3.3 |
copylastv( movorb ? (movdir ? "left/right" : "up/down") : |
649 |
|
|
(movdir ? "fore/back" : "rotate") ); |
650 |
gwlarson |
3.1 |
XNoOp(ourdisplay); |
651 |
|
|
|
652 |
|
|
while (!XCheckMaskEvent(ourdisplay, |
653 |
|
|
ButtonReleaseMask, levptr(XEvent))) { |
654 |
greg |
3.13 |
/* pause so as not to move too fast */ |
655 |
|
|
waitabit(); |
656 |
gwlarson |
3.1 |
|
657 |
|
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
658 |
|
|
&rootx, &rooty, &wx, &wy, &statemask)) |
659 |
|
|
break; /* on another screen */ |
660 |
|
|
|
661 |
|
|
if (!moveview(wx, vres-1-wy, movdir, movorb)) { |
662 |
|
|
sleep(1); |
663 |
|
|
continue; |
664 |
|
|
} else |
665 |
|
|
moved++; |
666 |
|
|
} |
667 |
|
|
if (!moved) { /* do final motion */ |
668 |
|
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
669 |
|
|
wx = levptr(XButtonReleasedEvent)->x; |
670 |
|
|
wy = levptr(XButtonReleasedEvent)->y; |
671 |
|
|
moveview(wx, vres-1-wy, movdir, movorb); |
672 |
|
|
} |
673 |
|
|
} |
674 |
|
|
|
675 |
|
|
|
676 |
|
|
getintersect(wp, org, dir, md) /* intersect ray with scene geometry */ |
677 |
|
|
FVECT wp; /* returned world intersection point */ |
678 |
|
|
FVECT org, dir; |
679 |
|
|
double md; |
680 |
|
|
{ |
681 |
|
|
float fbuf[6]; |
682 |
|
|
/* check to see if rtrace is running */ |
683 |
|
|
if (rtpd[2] <= 0) |
684 |
|
|
return(0); |
685 |
|
|
/* assign origin */ |
686 |
|
|
fbuf[0] = org[0]; fbuf[1] = org[1]; fbuf[2] = org[2]; |
687 |
|
|
/* compute clipping distance */ |
688 |
|
|
if (md <= FTINY) md = FHUGE; |
689 |
|
|
fbuf[3] = dir[0]*md; fbuf[4] = dir[1]*md; fbuf[5] = dir[2]*md; |
690 |
|
|
/* trace that ray */ |
691 |
greg |
3.13 |
if (process(rtpd, (char *)fbuf, (char *)fbuf, |
692 |
|
|
4*sizeof(float), 6*sizeof(float)) != 4*sizeof(float)) |
693 |
gwlarson |
3.1 |
error(INTERNAL, "error getting data back from rtrace process"); |
694 |
|
|
if (fbuf[3] >= .99*FHUGE) |
695 |
|
|
return(0); /* missed local objects */ |
696 |
|
|
wp[0] = fbuf[0]; wp[1] = fbuf[1]; wp[2] = fbuf[2]; |
697 |
|
|
return(1); /* else return world intersection */ |
698 |
|
|
} |
699 |
|
|
|
700 |
|
|
|
701 |
|
|
setglpersp(vp) /* set perspective view in GL */ |
702 |
|
|
register VIEW *vp; |
703 |
|
|
{ |
704 |
|
|
double d, xmin, xmax, ymin, ymax, zmin, zmax; |
705 |
|
|
|
706 |
gwlarson |
3.2 |
zmin = 0.1; |
707 |
|
|
zmax = 1000.; |
708 |
gwlarson |
3.1 |
if (thisview.vfore > FTINY) |
709 |
|
|
zmin = thisview.vfore; |
710 |
|
|
if (thisview.vaft > FTINY) |
711 |
|
|
zmax = thisview.vaft; |
712 |
|
|
xmax = zmin * tan(PI/180./2. * thisview.horiz); |
713 |
|
|
xmin = -xmax; |
714 |
|
|
d = thisview.hoff * (xmax - xmin); |
715 |
|
|
xmin += d; xmax += d; |
716 |
|
|
ymax = zmin * tan(PI/180./2. * thisview.vert); |
717 |
|
|
ymin = -ymax; |
718 |
|
|
d = thisview.voff * (ymax - ymin); |
719 |
|
|
ymin += d; ymax += d; |
720 |
|
|
/* set view matrix */ |
721 |
|
|
glMatrixMode(GL_PROJECTION); |
722 |
|
|
glLoadIdentity(); |
723 |
|
|
glFrustum(xmin, xmax, ymin, ymax, zmin, zmax); |
724 |
|
|
gluLookAt(thisview.vp[0], thisview.vp[1], thisview.vp[2], |
725 |
|
|
thisview.vp[0] + thisview.vdir[0], |
726 |
|
|
thisview.vp[1] + thisview.vdir[1], |
727 |
|
|
thisview.vp[2] + thisview.vdir[2], |
728 |
|
|
thisview.vup[0], thisview.vup[1], thisview.vup[2]); |
729 |
|
|
rgl_checkerr("setting perspective view"); |
730 |
|
|
} |
731 |
|
|
|
732 |
|
|
|
733 |
|
|
int |
734 |
|
|
getkey(ekey) /* get input key */ |
735 |
|
|
register XKeyPressedEvent *ekey; |
736 |
|
|
{ |
737 |
|
|
int n; |
738 |
|
|
char buf[8]; |
739 |
|
|
|
740 |
|
|
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
741 |
|
|
if (n != 1) |
742 |
|
|
return(1); |
743 |
|
|
switch (buf[0]) { |
744 |
|
|
case 'h': /* turn on height motion lock */ |
745 |
|
|
headlocked = 1; |
746 |
|
|
break; |
747 |
|
|
case 'H': /* turn off height motion lock */ |
748 |
|
|
headlocked = 0; |
749 |
|
|
break; |
750 |
|
|
case 'l': /* retrieve last (premouse) view */ |
751 |
gwlarson |
3.2 |
if (lastview.type) { |
752 |
gwlarson |
3.1 |
VIEW vtmp; |
753 |
|
|
copystruct(&vtmp, &thisview); |
754 |
|
|
dev_view(&lastview); |
755 |
|
|
copystruct(&lastview, &vtmp); |
756 |
|
|
} else |
757 |
|
|
XBell(ourdisplay, 0); |
758 |
|
|
break; |
759 |
|
|
case 'n': /* move to next standard view */ |
760 |
|
|
gotoview(currentview+1); |
761 |
|
|
break; |
762 |
|
|
case 'p': /* move to last standard view */ |
763 |
|
|
gotoview(currentview-1); |
764 |
|
|
break; |
765 |
|
|
case '+': /* zoom in */ |
766 |
|
|
zoomview(100+ZOOMPCT, ekey->x, vres-1-ekey->y); |
767 |
|
|
break; |
768 |
|
|
case '-': /* zoom out */ |
769 |
|
|
zoomview(100-ZOOMPCT, ekey->x, vres-1-ekey->y); |
770 |
|
|
break; |
771 |
|
|
case 'v': /* spit current view to stdout */ |
772 |
|
|
fputs(VIEWSTR, stdout); |
773 |
|
|
fprintview(&thisview, stdout); |
774 |
|
|
fputc('\n', stdout); |
775 |
|
|
break; |
776 |
|
|
case 'V': /* append view to rad file */ |
777 |
|
|
appendview(NULL, &thisview); |
778 |
|
|
break; |
779 |
|
|
case 'q': /* quit the program */ |
780 |
|
|
return(0); |
781 |
|
|
default: |
782 |
|
|
XBell(ourdisplay, 0); |
783 |
|
|
break; |
784 |
|
|
} |
785 |
|
|
return(1); |
786 |
|
|
} |
787 |
|
|
|
788 |
|
|
|
789 |
|
|
zoomview(pct, dx, dy) /* zoom in or out around (dx,dy) */ |
790 |
|
|
int pct; |
791 |
|
|
int dx, dy; |
792 |
|
|
{ |
793 |
|
|
double h, v; |
794 |
|
|
FVECT direc; |
795 |
|
|
|
796 |
|
|
if (pct == 100 | pct <= 0) |
797 |
|
|
return; |
798 |
|
|
copylastv("zooming"); |
799 |
|
|
h = (dx+.5)/hres - 0.5; |
800 |
|
|
v = (dy+.5)/vres - 0.5; |
801 |
|
|
h *= (1. - 100./pct); |
802 |
|
|
v *= (1. - 100./pct); |
803 |
|
|
thisview.vdir[0] += h*thisview.hvec[0] + v*thisview.vvec[0]; |
804 |
|
|
thisview.vdir[1] += h*thisview.hvec[1] + v*thisview.vvec[1]; |
805 |
|
|
thisview.vdir[2] += h*thisview.hvec[2] + v*thisview.vvec[2]; |
806 |
|
|
thisview.horiz = 2.*180./PI * atan( 100./pct * |
807 |
|
|
tan(PI/180./2.*thisview.horiz) ); |
808 |
|
|
thisview.vert = 2.*180./PI * atan( 100./pct * |
809 |
|
|
tan(PI/180./2.*thisview.vert) ); |
810 |
|
|
setview(&thisview); |
811 |
|
|
dev_view(&thisview); |
812 |
|
|
} |
813 |
|
|
|
814 |
|
|
|
815 |
|
|
gotoview(vwnum) /* go to specified view number */ |
816 |
|
|
int vwnum; |
817 |
|
|
{ |
818 |
|
|
if (vwnum < 0) |
819 |
|
|
for (vwnum = currentview; vwl[vwnum+1].v != NULL; vwnum++) |
820 |
|
|
; |
821 |
|
|
else if (vwnum >= MAXVIEW || vwl[vwnum].v == NULL) |
822 |
|
|
vwnum = 0; |
823 |
gwlarson |
3.4 |
copylastv("standard view"); |
824 |
gwlarson |
3.1 |
dev_view(vwl[currentview=vwnum].v); |
825 |
|
|
} |
826 |
|
|
|
827 |
|
|
|
828 |
|
|
appendview(nm, vp) /* append standard view */ |
829 |
|
|
char *nm; |
830 |
|
|
VIEW *vp; |
831 |
|
|
{ |
832 |
|
|
FILE *fp; |
833 |
|
|
/* check if already in there */ |
834 |
|
|
if (!bcmp(&thisview, vwl[currentview].v, sizeof(VIEW))) { |
835 |
|
|
error(COMMAND, "view already in standard list"); |
836 |
|
|
return; |
837 |
|
|
} |
838 |
|
|
/* append to file */ |
839 |
|
|
if ((fp = fopen(radfile, "a")) == NULL) { |
840 |
|
|
error(COMMAND, "cannot append rad input file"); |
841 |
|
|
return; |
842 |
|
|
} |
843 |
|
|
fputs("view=", fp); |
844 |
|
|
if (nm != NULL) { |
845 |
|
|
fputc(' ', fp); fputs(nm, fp); |
846 |
|
|
} |
847 |
|
|
fprintview(vp, fp); fputc('\n', fp); |
848 |
|
|
fclose(fp); |
849 |
|
|
/* append to our list */ |
850 |
|
|
while (vwl[currentview].v != NULL) |
851 |
|
|
currentview++; |
852 |
|
|
if (currentview >= MAXVIEW) |
853 |
|
|
error(INTERNAL, "too many views in appendview"); |
854 |
|
|
vwl[currentview].v = (VIEW *)bmalloc(sizeof(VIEW)); |
855 |
|
|
copystruct(vwl[currentview].v, &thisview); |
856 |
|
|
if (nm != NULL) |
857 |
|
|
vwl[currentview].nam = savqstr(nm); |
858 |
|
|
} |
859 |
|
|
|
860 |
|
|
|
861 |
|
|
copylastv(cause) /* copy last view position */ |
862 |
|
|
char *cause; |
863 |
|
|
{ |
864 |
gwlarson |
3.2 |
static char *lastvc; |
865 |
|
|
|
866 |
gwlarson |
3.1 |
if (cause == lastvc) |
867 |
|
|
return; /* only record one view per cause */ |
868 |
|
|
lastvc = cause; |
869 |
|
|
copystruct(&lastview, &thisview); |
870 |
|
|
} |
871 |
|
|
|
872 |
|
|
|
873 |
|
|
fixwindow(eexp) /* repair damage to window */ |
874 |
|
|
register XExposeEvent *eexp; |
875 |
|
|
{ |
876 |
|
|
if (hres == 0 | vres == 0) { /* first exposure */ |
877 |
|
|
resizewindow((XConfigureEvent *)eexp); |
878 |
|
|
return; |
879 |
|
|
} |
880 |
|
|
if (eexp->count) /* wait for final exposure */ |
881 |
|
|
return; |
882 |
|
|
/* rerender everything */ |
883 |
|
|
render(); |
884 |
|
|
} |
885 |
|
|
|
886 |
|
|
|
887 |
|
|
resizewindow(ersz) /* resize window */ |
888 |
|
|
register XConfigureEvent *ersz; |
889 |
|
|
{ |
890 |
|
|
static char resizing[] = "resizing window"; |
891 |
|
|
double wa, va; |
892 |
|
|
|
893 |
|
|
glViewport(0, 0, hres=ersz->width, vres=ersz->height); |
894 |
|
|
if (hres > maxhres) maxhres = hres; |
895 |
|
|
if (vres > maxvres) maxvres = vres; |
896 |
gwlarson |
3.5 |
if (no_render) |
897 |
gwlarson |
3.2 |
return; |
898 |
gwlarson |
3.1 |
wa = (vres*pheight)/(hres*pwidth); |
899 |
|
|
va = viewaspect(&thisview); |
900 |
|
|
if (va > wa+.05) { |
901 |
|
|
copylastv(resizing); |
902 |
|
|
thisview.vert = 2.*180./PI * |
903 |
|
|
atan( tan(PI/180./2. * thisview.horiz) * wa ); |
904 |
|
|
} else if (va < wa-.05) { |
905 |
|
|
copylastv(resizing); |
906 |
|
|
thisview.horiz = 2.*180./PI * |
907 |
|
|
atan( tan(PI/180./2. * thisview.vert) / wa ); |
908 |
|
|
} else |
909 |
|
|
return; |
910 |
|
|
setview(&thisview); |
911 |
|
|
dev_view(&thisview); |
912 |
|
|
} |