1 |
gwlarson |
3.1 |
#ifndef lint |
2 |
schorsch |
3.19 |
static const char RCSid[] = "$Id: glrad.c,v 3.18 2004/01/02 12:51:54 schorsch Exp $"; |
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 |
schorsch |
3.16 |
#include <string.h> |
15 |
greg |
3.13 |
#include <time.h> |
16 |
schorsch |
3.15 |
|
17 |
gwlarson |
3.11 |
#include "radogl.h" |
18 |
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#include "view.h" |
19 |
|
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#include "paths.h" |
20 |
gwlarson |
3.1 |
#include "glradicon.h" |
21 |
schorsch |
3.15 |
#include "rtprocess.h" |
22 |
gwlarson |
3.1 |
|
23 |
|
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#ifndef MAXVIEW |
24 |
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#define MAXVIEW 63 /* maximum number of standard views */ |
25 |
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#endif |
26 |
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#ifndef MAXSCENE |
27 |
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#define MAXSCENE 127 /* maximum number of scene files */ |
28 |
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#endif |
29 |
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30 |
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#define ZOOMPCT 9 /* percent to zoom at a time */ |
31 |
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32 |
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#define MOVPCT 7 /* percent distance to move /frame */ |
33 |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
34 |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
35 |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
36 |
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37 |
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#define BORWIDTH 5 /* border width */ |
38 |
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39 |
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#define ourscreen DefaultScreen(ourdisplay) |
40 |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
41 |
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
42 |
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ButtonPressMask|ButtonReleaseMask) |
43 |
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44 |
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#define levptr(etype) ((etype *)¤tevent) |
45 |
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46 |
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XEvent currentevent; /* current event */ |
47 |
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48 |
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int mapped = 0; /* window is mapped? */ |
49 |
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unsigned long ourblack=0, ourwhite=~0; |
50 |
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51 |
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Display *ourdisplay = NULL; /* our display */ |
52 |
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XVisualInfo *ourvinf; /* our visual information */ |
53 |
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Window gwind = 0; /* our graphics window */ |
54 |
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int hres, vres; /* rendering window dimensions */ |
55 |
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int maxhres, maxvres; /* maximum given dimensions */ |
56 |
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GLXContext gctx; /* our GLX context */ |
57 |
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58 |
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double pwidth, pheight; /* pixel dimensions (mm) */ |
59 |
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60 |
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int headlocked = 0; /* lock vertical motion */ |
61 |
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62 |
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struct { |
63 |
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char *nam; /* view name (NULL if none) */ |
64 |
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VIEW *v; /* parameters (NULL term.) */ |
65 |
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} vwl[MAXVIEW+1]; /* our list of views */ |
66 |
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67 |
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int currentview = 0; /* current view number */ |
68 |
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VIEW thisview = STDVIEW; /* displayed view */ |
69 |
gwlarson |
3.4 |
double eyedist = 1; /* interocular distance */ |
70 |
gwlarson |
3.1 |
VIEW lastview; /* last recorded view */ |
71 |
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72 |
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char *progname; /* global argv[0] */ |
73 |
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char *radfile; /* rad input file */ |
74 |
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char *scene[MAXSCENE+1]; /* material and scene file list */ |
75 |
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int nscenef = 0; /* number of scene files */ |
76 |
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char *octree; /* octree name (NULL if unnec.) */ |
77 |
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|
78 |
schorsch |
3.15 |
SUBPROC rtpd; /* rtrace process descriptors */ |
79 |
gwlarson |
3.1 |
|
80 |
gwlarson |
3.4 |
int silent = 0; /* run rad silently? */ |
81 |
gwlarson |
3.1 |
int backvis = 1; /* back faces visible? */ |
82 |
gwlarson |
3.4 |
int stereo = 0; /* do stereo? */ |
83 |
gwlarson |
3.1 |
|
84 |
gwlarson |
3.4 |
#ifdef NOSTEREO |
85 |
schorsch |
3.18 |
#define setstereobuf(bid) |
86 |
gwlarson |
3.4 |
#else |
87 |
|
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#define setstereobuf(bid) (glXWaitGL(), \ |
88 |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
89 |
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glXWaitX()) |
90 |
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#endif |
91 |
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92 |
gwlarson |
3.1 |
int displist; /* our scene display list */ |
93 |
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94 |
gwlarson |
3.5 |
int no_render = 0; /* don't rerender */ |
95 |
gwlarson |
3.2 |
|
96 |
gwlarson |
3.1 |
extern int nowarn; /* turn warnings off? */ |
97 |
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98 |
schorsch |
3.18 |
static void startrtrace(char *octname); |
99 |
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static void runrad(int ac, char **av); |
100 |
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static int findvw(register char *nm); |
101 |
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static int varmatch(register char *s, register char *vn); |
102 |
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static char * scan4var(char *buf, int buflen, char *vname, FILE *fp); |
103 |
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static void dev_open(char *id); |
104 |
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static void dev_close(void); |
105 |
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static int dev_view(register VIEW *nv); |
106 |
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static int dev_input(int nsecs); |
107 |
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static void render(void); |
108 |
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static int moveview(int dx, int dy, int mov, int orb); |
109 |
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static void waitabit(void); |
110 |
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static void getmove(XButtonPressedEvent *ebut); |
111 |
|
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static int getintersect(FVECT wp, FVECT org, FVECT dir, double md); |
112 |
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static void setglpersp(register VIEW *vp); |
113 |
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static int getkey(register XKeyPressedEvent *ekey); |
114 |
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static void zoomview(int pct, int dx, int dy); |
115 |
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static void gotoview(int vwnum); |
116 |
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static void appendview(char *nm, VIEW *vp); |
117 |
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static void copylastv(char *cause); |
118 |
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static void fixwindow(register XExposeEvent *eexp); |
119 |
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static void resizewindow(register XConfigureEvent *ersz); |
120 |
gwlarson |
3.1 |
|
121 |
schorsch |
3.18 |
|
122 |
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int |
123 |
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main( |
124 |
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int argc, |
125 |
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char *argv[] |
126 |
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) |
127 |
gwlarson |
3.1 |
{ |
128 |
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char *viewsel = NULL; |
129 |
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long vwintvl = 0; |
130 |
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int i; |
131 |
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132 |
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progname = argv[0]; |
133 |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
134 |
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switch (argv[i][1]) { |
135 |
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case 'v': |
136 |
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viewsel = argv[++i]; |
137 |
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break; |
138 |
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case 'w': |
139 |
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nowarn = !nowarn; |
140 |
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break; |
141 |
gwlarson |
3.4 |
case 's': |
142 |
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silent = !silent; |
143 |
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break; |
144 |
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case 'S': |
145 |
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stereo = !stereo; |
146 |
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break; |
147 |
gwlarson |
3.1 |
case 'c': |
148 |
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vwintvl = atoi(argv[++i]); |
149 |
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break; |
150 |
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case 'b': |
151 |
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backvis = !backvis; |
152 |
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break; |
153 |
|
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default: |
154 |
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goto userr; |
155 |
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} |
156 |
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if (i >= argc) |
157 |
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goto userr; |
158 |
gwlarson |
3.4 |
#ifdef NOSTEREO |
159 |
|
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if (stereo) |
160 |
|
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error(INTERNAL, "stereo not supported in this version"); |
161 |
|
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#endif |
162 |
gwlarson |
3.1 |
/* run rad and get views */ |
163 |
|
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runrad(argc-i, argv+i); |
164 |
|
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/* check view */ |
165 |
schorsch |
3.17 |
if (viewsel != NULL) { |
166 |
gwlarson |
3.3 |
if (viewsel[0] == '-') { |
167 |
|
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char *ve = viewsel; |
168 |
|
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if (!sscanview(&thisview, viewsel) || |
169 |
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(ve = setview(&thisview)) != NULL) { |
170 |
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fprintf(stderr, "%s: bad view: %s\n", |
171 |
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progname, ve); |
172 |
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quit(1); |
173 |
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} |
174 |
|
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currentview = -1; |
175 |
|
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} else if ((currentview = findvw(viewsel)) < 0) { |
176 |
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fprintf(stderr, "%s: no such view: %s\n", |
177 |
|
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progname, viewsel); |
178 |
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quit(1); |
179 |
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} |
180 |
schorsch |
3.17 |
} |
181 |
gwlarson |
3.1 |
/* open GL */ |
182 |
|
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dev_open(radfile = argv[i]); |
183 |
|
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/* load octree or scene files */ |
184 |
|
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if (octree != NULL) { |
185 |
gwlarson |
3.12 |
displist = rgl_octlist(octree, NULL, NULL, NULL); |
186 |
gwlarson |
3.1 |
startrtrace(octree); |
187 |
|
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} else |
188 |
gwlarson |
3.12 |
displist = rgl_filelist(nscenef, scene, NULL); |
189 |
gwlarson |
3.1 |
/* set initial view */ |
190 |
gwlarson |
3.3 |
dev_view(currentview < 0 ? &thisview : vwl[currentview].v); |
191 |
gwlarson |
3.1 |
/* input/render loop */ |
192 |
|
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while (dev_input(vwintvl)) |
193 |
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; |
194 |
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/* all done */ |
195 |
|
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quit(0); |
196 |
|
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userr: |
197 |
gwlarson |
3.8 |
fprintf(stderr, |
198 |
|
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"Usage: %s [-w][-s][-b][-S][-v view] rfile [VAR=value]..\n", |
199 |
gwlarson |
3.1 |
argv[0]); |
200 |
|
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quit(1); |
201 |
schorsch |
3.18 |
return 1; /* pro forma return */ |
202 |
gwlarson |
3.1 |
} |
203 |
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204 |
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|
205 |
greg |
3.13 |
void |
206 |
schorsch |
3.19 |
quit( /* exit gracefully */ |
207 |
|
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int code |
208 |
|
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) |
209 |
gwlarson |
3.1 |
{ |
210 |
|
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if (ourdisplay != NULL) |
211 |
|
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dev_close(); |
212 |
schorsch |
3.15 |
/* if (rtpd.pid > 0) { */ |
213 |
|
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if (rtpd.running) { |
214 |
|
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if (close_process(&rtpd) > 0) |
215 |
gwlarson |
3.1 |
wputs("bad exit status from rtrace\n"); |
216 |
schorsch |
3.15 |
/* rtpd.pid = 0; */ |
217 |
gwlarson |
3.1 |
} |
218 |
|
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exit(code); |
219 |
|
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} |
220 |
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|
221 |
|
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|
222 |
schorsch |
3.18 |
static void |
223 |
|
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startrtrace( /* start rtrace on octname */ |
224 |
|
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char *octname |
225 |
|
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) |
226 |
gwlarson |
3.1 |
{ |
227 |
|
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static char *av[12] = {"rtrace", "-h", "-fff", "-ld+", |
228 |
|
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"-opL", "-x", "1"}; |
229 |
|
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int ac = 7; |
230 |
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|
231 |
|
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if (nowarn) av[ac++] = "-w-"; |
232 |
|
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av[ac++] = octname; |
233 |
|
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av[ac] = NULL; |
234 |
schorsch |
3.15 |
if (open_process(&rtpd, av) <= 0) |
235 |
gwlarson |
3.1 |
error(SYSTEM, "cannot start rtrace process"); |
236 |
|
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} |
237 |
|
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|
238 |
|
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|
239 |
schorsch |
3.18 |
static void |
240 |
|
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runrad( /* run rad and load variables */ |
241 |
|
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int ac, |
242 |
|
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char **av |
243 |
|
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) |
244 |
gwlarson |
3.1 |
{ |
245 |
|
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static char optfile[] = TEMPLATE; |
246 |
|
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int nvn = 0, nvv = 0; |
247 |
|
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FILE *fp; |
248 |
|
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register char *cp; |
249 |
|
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char radcomm[256], buf[128], nam[32]; |
250 |
|
|
/* set rad commmand */ |
251 |
|
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strcpy(radcomm, "rad -w -v 0 "); /* look out below! */ |
252 |
|
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cp = radcomm + 19; |
253 |
gwlarson |
3.4 |
if (silent) { |
254 |
|
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strcpy(cp, "-s "); |
255 |
|
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cp += 3; |
256 |
|
|
} |
257 |
gwlarson |
3.1 |
while (ac--) { |
258 |
|
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strcpy(cp, *av++); |
259 |
|
|
while (*cp) cp++; |
260 |
|
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*cp++ = ' '; |
261 |
|
|
} |
262 |
|
|
strcpy(cp, "OPTFILE="); /* create temporary options file */ |
263 |
|
|
strcpy(cp+8, mktemp(optfile)); |
264 |
|
|
if (system(radcomm)) /* update octree */ |
265 |
|
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error(USER, "error executing rad command"); |
266 |
|
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/* replace "-v 0" with "-n -e -s -V" */ |
267 |
|
|
strcpy(radcomm+7, "-n -e -s -V"); |
268 |
|
|
radcomm[18] = ' '; |
269 |
|
|
if ((fp = popen(radcomm, "r")) == NULL) |
270 |
|
|
error(SYSTEM, "cannot start rad command"); |
271 |
|
|
buf[0] = '\0'; /* read variables alphabetically */ |
272 |
|
|
/* get exposure */ |
273 |
|
|
if ((cp = scan4var(buf, sizeof(buf), "EXPOSURE", fp)) != NULL) { |
274 |
|
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expval = atof(cp); |
275 |
schorsch |
3.18 |
if ((*cp == '-') | (*cp == '+')) |
276 |
gwlarson |
3.1 |
expval = pow(2., expval); |
277 |
gwlarson |
3.3 |
expval *= 0.5; /* compensate for local shading */ |
278 |
gwlarson |
3.1 |
} |
279 |
gwlarson |
3.4 |
/* look for eye separation */ |
280 |
|
|
if ((cp = scan4var(buf, sizeof(buf), "EYESEP", fp)) != NULL) |
281 |
|
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eyedist = atof(cp); |
282 |
gwlarson |
3.1 |
/* look for materials */ |
283 |
|
|
while ((cp = scan4var(buf, sizeof(buf), "materials", fp)) != NULL) { |
284 |
|
|
nscenef += wordstring(scene+nscenef, cp); |
285 |
|
|
buf[0] = '\0'; |
286 |
|
|
} |
287 |
|
|
/* look for octree */ |
288 |
|
|
if ((cp = scan4var(buf, sizeof(buf), "OCTREE", fp)) != NULL) |
289 |
|
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octree = savqstr(cp); |
290 |
|
|
/* look for scene files */ |
291 |
|
|
while ((cp = scan4var(buf, sizeof(buf), "scene", fp)) != NULL) { |
292 |
|
|
nscenef += wordstring(scene+nscenef, cp); |
293 |
|
|
buf[0] = '\0'; |
294 |
|
|
} |
295 |
|
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/* load view names */ |
296 |
|
|
while ((cp = scan4var(buf, sizeof(buf), "view", fp)) != NULL) { |
297 |
|
|
if (nvn >= MAXVIEW) |
298 |
|
|
error(INTERNAL, "too many views in rad file"); |
299 |
|
|
vwl[nvn++].nam = *cp == '-' ? (char *)NULL : |
300 |
|
|
savqstr(atos(nam, sizeof(nam), cp)); |
301 |
|
|
buf[0] = '\0'; |
302 |
|
|
} |
303 |
|
|
/* load actual views */ |
304 |
|
|
do |
305 |
|
|
if (isview(buf)) { |
306 |
|
|
vwl[nvv].v = (VIEW *)bmalloc(sizeof(VIEW)); |
307 |
schorsch |
3.17 |
*(vwl[nvv].v) = stdview; |
308 |
gwlarson |
3.1 |
sscanview(vwl[nvv].v, buf); |
309 |
|
|
if ((cp = setview(vwl[nvv++].v)) != NULL) { |
310 |
|
|
fprintf(stderr, "%s: bad view %d - %s\n", |
311 |
|
|
progname, nvv, cp); |
312 |
|
|
quit(1); |
313 |
|
|
} |
314 |
|
|
} |
315 |
|
|
while (fgets(buf, sizeof(buf), fp) != NULL); |
316 |
|
|
if (nvv != nvn) |
317 |
|
|
error(INTERNAL, "view miscount in runrad"); |
318 |
|
|
pclose(fp); |
319 |
|
|
/* open options file */ |
320 |
|
|
if ((fp = fopen(optfile, "r")) == NULL) |
321 |
|
|
error(SYSTEM, "cannot open options file"); |
322 |
gwlarson |
3.4 |
/* get relevant options */ |
323 |
gwlarson |
3.1 |
while (fgets(buf, sizeof(buf), fp) != NULL) |
324 |
gwlarson |
3.4 |
if (!strncmp(buf, "-av ", 4)) |
325 |
gwlarson |
3.1 |
setcolor(ambval, atof(buf+4), |
326 |
|
|
atof(sskip2(buf+4,1)), |
327 |
|
|
atof(sskip2(buf+4,2))); |
328 |
gwlarson |
3.4 |
else if (backvis && !strncmp(buf, "-bv", 3) && |
329 |
gwlarson |
3.10 |
(!buf[3] || strchr("0-FfNn \n",buf[3])!=NULL)) |
330 |
gwlarson |
3.4 |
backvis = 0; |
331 |
gwlarson |
3.1 |
fclose(fp); |
332 |
|
|
unlink(optfile); /* delete options file */ |
333 |
|
|
} |
334 |
|
|
|
335 |
|
|
|
336 |
schorsch |
3.18 |
static int |
337 |
|
|
findvw( /* find named view */ |
338 |
|
|
register char *nm |
339 |
|
|
) |
340 |
gwlarson |
3.1 |
{ |
341 |
|
|
register int n; |
342 |
|
|
|
343 |
schorsch |
3.18 |
if ((*nm >= '1') & (*nm <= '9') && |
344 |
gwlarson |
3.1 |
(n = atoi(nm)-1) <= MAXVIEW && vwl[n].v != NULL) |
345 |
|
|
return(n); |
346 |
|
|
for (n = 0; vwl[n].v != NULL; n++) |
347 |
|
|
if (vwl[n].nam != NULL && !strcmp(nm, vwl[n].nam)) |
348 |
|
|
return(n); |
349 |
|
|
return(-1); |
350 |
|
|
} |
351 |
|
|
|
352 |
|
|
|
353 |
schorsch |
3.18 |
static int |
354 |
|
|
varmatch( /* match line to variable */ |
355 |
|
|
register char *s, |
356 |
|
|
register char *vn |
357 |
|
|
) |
358 |
gwlarson |
3.1 |
{ |
359 |
|
|
register int c; |
360 |
|
|
|
361 |
|
|
for ( ; *vn && *s == *vn; s++, vn++) |
362 |
|
|
; |
363 |
|
|
while (isspace(*s)) |
364 |
|
|
s++; |
365 |
|
|
if (*s == '=') |
366 |
|
|
return(*vn); |
367 |
|
|
while (!(c = toupper(*s++) - toupper(*vn)) && *vn++) |
368 |
|
|
; |
369 |
|
|
return(c); |
370 |
|
|
} |
371 |
|
|
|
372 |
|
|
|
373 |
schorsch |
3.18 |
static char * |
374 |
|
|
scan4var( /* scan for variable from fp */ |
375 |
|
|
char *buf, |
376 |
|
|
int buflen, |
377 |
|
|
char *vname, |
378 |
|
|
FILE *fp |
379 |
|
|
) |
380 |
gwlarson |
3.1 |
{ |
381 |
|
|
int cval; |
382 |
|
|
register char *cp; |
383 |
|
|
/* search out matching line */ |
384 |
|
|
while ((cval = varmatch(buf, vname))) { |
385 |
|
|
if (cval > 0) /* gone too far? */ |
386 |
|
|
return(NULL); |
387 |
|
|
buf[0] = '\0'; /* else get next line */ |
388 |
|
|
if (fgetline(buf, buflen, fp) == NULL) |
389 |
|
|
return(NULL); |
390 |
|
|
} |
391 |
|
|
/* skip variable name and '=' */ |
392 |
|
|
for (cp = buf; *cp++ != '='; ) |
393 |
|
|
; |
394 |
|
|
while (isspace(*cp)) cp++; |
395 |
|
|
return(cp); |
396 |
|
|
} |
397 |
|
|
|
398 |
|
|
|
399 |
schorsch |
3.18 |
static void |
400 |
|
|
dev_open( /* initialize GLX driver */ |
401 |
|
|
char *id |
402 |
|
|
) |
403 |
gwlarson |
3.1 |
{ |
404 |
|
|
static int atlBest[] = {GLX_RGBA, GLX_RED_SIZE,4, |
405 |
|
|
GLX_GREEN_SIZE,4, GLX_BLUE_SIZE,4, |
406 |
|
|
GLX_DOUBLEBUFFER, GLX_DEPTH_SIZE,15, None}; |
407 |
|
|
XSetWindowAttributes ourwinattr; |
408 |
|
|
XWMHints ourxwmhints; |
409 |
|
|
/* open display server */ |
410 |
|
|
ourdisplay = XOpenDisplay(NULL); |
411 |
|
|
if (ourdisplay == NULL) |
412 |
|
|
error(USER, "cannot open X-windows; DISPLAY variable set?\n"); |
413 |
|
|
/* find a usable visual */ |
414 |
|
|
ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
415 |
|
|
if (ourvinf == NULL) |
416 |
|
|
error(USER, "no suitable visuals available"); |
417 |
|
|
/* get a context */ |
418 |
|
|
gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE); |
419 |
|
|
/* open window */ |
420 |
|
|
ourwinattr.background_pixel = ourblack; |
421 |
|
|
ourwinattr.border_pixel = ourblack; |
422 |
|
|
ourwinattr.event_mask = ourmask; |
423 |
|
|
/* this is stupid */ |
424 |
|
|
ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
425 |
|
|
ourvinf->visual, AllocNone); |
426 |
|
|
gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
427 |
|
|
DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
428 |
|
|
DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
429 |
|
|
BORWIDTH, ourvinf->depth, InputOutput, ourvinf->visual, |
430 |
|
|
CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
431 |
|
|
if (gwind == 0) |
432 |
|
|
error(SYSTEM, "cannot create window\n"); |
433 |
|
|
XStoreName(ourdisplay, gwind, id); |
434 |
gwlarson |
3.4 |
#ifndef NOSTEREO |
435 |
|
|
if (stereo) /* check if stereo working */ |
436 |
|
|
switch (XSGIQueryStereoMode(ourdisplay, gwind)) { |
437 |
|
|
case STEREO_TOP: |
438 |
|
|
case STEREO_BOTTOM: |
439 |
|
|
break; |
440 |
|
|
case STEREO_OFF: |
441 |
|
|
error(USER, |
442 |
|
|
"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first"); |
443 |
|
|
case X_STEREO_UNSUPPORTED: |
444 |
|
|
error(USER, "stereo not supported on this screen"); |
445 |
|
|
default: |
446 |
|
|
error(INTERNAL, "unknown stereo mode"); |
447 |
|
|
} |
448 |
|
|
#endif |
449 |
gwlarson |
3.1 |
/* set window manager hints */ |
450 |
|
|
ourxwmhints.flags = InputHint|IconPixmapHint; |
451 |
|
|
ourxwmhints.input = True; |
452 |
|
|
ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, |
453 |
|
|
gwind, glradicon_bits, glradicon_width, glradicon_height); |
454 |
|
|
XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
455 |
|
|
/* set GLX context */ |
456 |
|
|
glXMakeCurrent(ourdisplay, gwind, gctx); |
457 |
|
|
glEnable(GL_DEPTH_TEST); |
458 |
|
|
glDepthFunc(GL_LESS); |
459 |
|
|
glShadeModel(GL_SMOOTH); |
460 |
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
461 |
gwlarson |
3.7 |
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
462 |
gwlarson |
3.1 |
glEnable(GL_LIGHTING); |
463 |
gwlarson |
3.9 |
glFrontFace(GL_CCW); |
464 |
|
|
glCullFace(GL_BACK); |
465 |
gwlarson |
3.1 |
if (backvis) |
466 |
|
|
glDisable(GL_CULL_FACE); |
467 |
gwlarson |
3.9 |
else |
468 |
gwlarson |
3.1 |
glEnable(GL_CULL_FACE); |
469 |
|
|
glDrawBuffer(GL_BACK); |
470 |
|
|
/* figure out sensible view */ |
471 |
|
|
pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
472 |
|
|
DisplayWidth(ourdisplay, ourscreen); |
473 |
|
|
pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
474 |
|
|
DisplayHeight(ourdisplay, ourscreen); |
475 |
gwlarson |
3.4 |
if (stereo) { /* set stereo mode */ |
476 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
477 |
|
|
pheight *= 2.; |
478 |
|
|
} |
479 |
gwlarson |
3.1 |
/* map the window */ |
480 |
|
|
XMapWindow(ourdisplay, gwind); |
481 |
gwlarson |
3.5 |
no_render++; |
482 |
gwlarson |
3.3 |
do |
483 |
|
|
dev_input(0); /* get resize event */ |
484 |
schorsch |
3.18 |
while ((hres == 0) & (vres == 0)); |
485 |
gwlarson |
3.5 |
no_render--; |
486 |
gwlarson |
3.1 |
rgl_checkerr("initializing GLX"); |
487 |
|
|
} |
488 |
|
|
|
489 |
|
|
|
490 |
schorsch |
3.18 |
static void |
491 |
|
|
dev_close(void) /* close our display and free resources */ |
492 |
gwlarson |
3.1 |
{ |
493 |
|
|
glXMakeCurrent(ourdisplay, None, NULL); |
494 |
|
|
glXDestroyContext(ourdisplay, gctx); |
495 |
|
|
XDestroyWindow(ourdisplay, gwind); |
496 |
|
|
gwind = 0; |
497 |
|
|
XCloseDisplay(ourdisplay); |
498 |
|
|
ourdisplay = NULL; |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
|
502 |
schorsch |
3.18 |
static int |
503 |
|
|
dev_view( /* assign new driver view */ |
504 |
|
|
register VIEW *nv |
505 |
|
|
) |
506 |
gwlarson |
3.1 |
{ |
507 |
|
|
int newhres = hres, newvres = vres; |
508 |
|
|
double wa, va; |
509 |
|
|
/* check view legality */ |
510 |
|
|
if (nv->type != VT_PER) { |
511 |
|
|
error(COMMAND, "illegal view type"); |
512 |
|
|
nv->type = VT_PER; |
513 |
|
|
} |
514 |
schorsch |
3.18 |
if ((nv->horiz > 160.) | (nv->vert > 160.)) { |
515 |
gwlarson |
3.1 |
error(COMMAND, "illegal view angle"); |
516 |
|
|
if (nv->horiz > 160.) |
517 |
|
|
nv->horiz = 160.; |
518 |
|
|
if (nv->vert > 160.) |
519 |
|
|
nv->vert = 160.; |
520 |
|
|
} |
521 |
schorsch |
3.18 |
if ((hres != 0) & (vres != 0)) { |
522 |
gwlarson |
3.1 |
wa = (vres*pheight)/(hres*pwidth); |
523 |
gwlarson |
3.2 |
va = viewaspect(nv); |
524 |
gwlarson |
3.1 |
if (va > wa+.05) { |
525 |
|
|
newvres = (pwidth/pheight)*va*newhres + .5; |
526 |
|
|
if (newvres > maxvres) { |
527 |
|
|
newvres = maxvres; |
528 |
|
|
newhres = (pheight/pwidth)/va*newvres + .5; |
529 |
|
|
} |
530 |
|
|
} else if (va < wa-.05) { |
531 |
|
|
newhres = (pheight/pwidth)/va*newvres + .5; |
532 |
|
|
if (newhres > maxhres) { |
533 |
|
|
newhres = maxhres; |
534 |
|
|
newvres = (pwidth/pheight)*va*newhres + .5; |
535 |
|
|
} |
536 |
|
|
} |
537 |
schorsch |
3.18 |
if ((newhres != hres) | (newvres != vres)) { |
538 |
gwlarson |
3.5 |
no_render++; |
539 |
gwlarson |
3.1 |
XResizeWindow(ourdisplay, gwind, newhres, newvres); |
540 |
|
|
do |
541 |
|
|
dev_input(0); /* get resize event */ |
542 |
schorsch |
3.18 |
while ((newhres != hres) | (newvres != vres)); |
543 |
gwlarson |
3.5 |
no_render--; |
544 |
gwlarson |
3.1 |
} |
545 |
|
|
} |
546 |
schorsch |
3.17 |
thisview = *nv; |
547 |
gwlarson |
3.1 |
setglpersp(&thisview); |
548 |
|
|
render(); |
549 |
|
|
return(1); |
550 |
|
|
} |
551 |
|
|
|
552 |
|
|
|
553 |
schorsch |
3.18 |
static int |
554 |
|
|
dev_input( /* get next input event */ |
555 |
|
|
int nsecs |
556 |
|
|
) |
557 |
gwlarson |
3.1 |
{ |
558 |
|
|
#if 0 |
559 |
|
|
static time_t lasttime = 0; |
560 |
|
|
time_t thistime; |
561 |
|
|
|
562 |
|
|
if (nsecs > 0) { |
563 |
|
|
thistime = time(0); |
564 |
|
|
nsecs -= (long)(thistime - lasttime); |
565 |
|
|
lasttime = thistime; |
566 |
|
|
} |
567 |
|
|
if (nsecs > 0) |
568 |
|
|
alarm(nsecs); |
569 |
|
|
#endif |
570 |
|
|
XNextEvent(ourdisplay, levptr(XEvent)); |
571 |
|
|
switch (levptr(XEvent)->type) { |
572 |
|
|
case ConfigureNotify: |
573 |
|
|
resizewindow(levptr(XConfigureEvent)); |
574 |
|
|
break; |
575 |
|
|
case UnmapNotify: |
576 |
|
|
mapped = 0; |
577 |
|
|
break; |
578 |
|
|
case MapNotify: |
579 |
|
|
mapped = 1; |
580 |
|
|
break; |
581 |
|
|
case Expose: |
582 |
|
|
fixwindow(levptr(XExposeEvent)); |
583 |
|
|
break; |
584 |
|
|
case KeyPress: |
585 |
|
|
return(getkey(levptr(XKeyPressedEvent))); |
586 |
|
|
case ButtonPress: |
587 |
|
|
getmove(levptr(XButtonPressedEvent)); |
588 |
|
|
break; |
589 |
|
|
} |
590 |
|
|
return(1); |
591 |
|
|
} |
592 |
|
|
|
593 |
|
|
|
594 |
schorsch |
3.18 |
static void |
595 |
|
|
render(void) /* render our display list and swap buffers */ |
596 |
gwlarson |
3.1 |
{ |
597 |
gwlarson |
3.4 |
double d; |
598 |
|
|
|
599 |
gwlarson |
3.5 |
if (!mapped | no_render) |
600 |
gwlarson |
3.1 |
return; |
601 |
|
|
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
602 |
|
|
glCallList(displist); |
603 |
gwlarson |
3.4 |
if (stereo) { /* do right eye for stereo */ |
604 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
605 |
|
|
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); |
606 |
|
|
glMatrixMode(GL_MODELVIEW); |
607 |
|
|
glPushMatrix(); |
608 |
|
|
d = -eyedist / sqrt(thisview.hn2); |
609 |
|
|
glTranslated(d*thisview.hvec[0], d*thisview.hvec[1], |
610 |
|
|
d*thisview.hvec[2]); |
611 |
|
|
glCallList(displist); |
612 |
|
|
glMatrixMode(GL_MODELVIEW); |
613 |
|
|
glPopMatrix(); |
614 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
615 |
|
|
} |
616 |
gwlarson |
3.1 |
glXSwapBuffers(ourdisplay, gwind); /* calls glFlush() */ |
617 |
|
|
rgl_checkerr("rendering display list"); |
618 |
|
|
} |
619 |
|
|
|
620 |
|
|
|
621 |
schorsch |
3.18 |
static int |
622 |
|
|
moveview( /* move our view */ |
623 |
|
|
int dx, |
624 |
|
|
int dy, |
625 |
|
|
int mov, |
626 |
|
|
int orb |
627 |
|
|
) |
628 |
gwlarson |
3.1 |
{ |
629 |
|
|
VIEW nv; |
630 |
|
|
FVECT odir, v1, wp; |
631 |
|
|
double d; |
632 |
|
|
/* start with old view */ |
633 |
schorsch |
3.17 |
nv = thisview; |
634 |
gwlarson |
3.1 |
/* change view direction */ |
635 |
|
|
if ((d = viewray(v1, odir, &thisview, |
636 |
|
|
(dx+.5)/hres, (dy+.5)/vres)) < -FTINY) |
637 |
|
|
return(0); /* outside view */ |
638 |
|
|
if (mov | orb) { |
639 |
|
|
if (!getintersect(wp, v1, odir, d)) |
640 |
|
|
return(0); |
641 |
|
|
VSUM(odir, wp, nv.vp, -1.); |
642 |
|
|
} else |
643 |
|
|
VCOPY(nv.vdir, odir); |
644 |
|
|
if (orb && mov) { /* orbit left/right */ |
645 |
|
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
646 |
|
|
VSUM(nv.vp, wp, odir, -1.); |
647 |
|
|
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
648 |
|
|
} else if (orb) { /* orbit up/down */ |
649 |
|
|
fcross(v1, odir, nv.vup); |
650 |
|
|
if (normalize(v1) == 0.) |
651 |
|
|
return(0); |
652 |
|
|
spinvector(odir, odir, v1, d=MOVDEG*PI/180.*orb); |
653 |
|
|
VSUM(nv.vp, wp, odir, -1.); |
654 |
|
|
spinvector(nv.vdir, nv.vdir, v1, d); |
655 |
|
|
} else if (mov) { /* move forward/backward */ |
656 |
|
|
d = MOVPCT/100. * mov; |
657 |
|
|
VSUM(nv.vp, nv.vp, odir, d); |
658 |
|
|
} |
659 |
|
|
if (!mov ^ !orb && headlocked) { /* restore head height */ |
660 |
|
|
VSUM(v1, thisview.vp, nv.vp, -1.); |
661 |
|
|
d = DOT(v1, thisview.vup); |
662 |
|
|
VSUM(nv.vp, nv.vp, thisview.vup, d); |
663 |
|
|
} |
664 |
|
|
if (setview(&nv) != NULL) |
665 |
|
|
return(0); /* illegal view */ |
666 |
|
|
dev_view(&nv); |
667 |
|
|
return(1); |
668 |
|
|
} |
669 |
|
|
|
670 |
|
|
|
671 |
schorsch |
3.18 |
static void |
672 |
|
|
waitabit(void) /* pause a moment */ |
673 |
greg |
3.13 |
{ |
674 |
|
|
struct timespec ts; |
675 |
|
|
ts.tv_sec = 0; |
676 |
|
|
ts.tv_nsec = 5000000; |
677 |
|
|
nanosleep(&ts, NULL); |
678 |
|
|
} |
679 |
|
|
|
680 |
|
|
|
681 |
schorsch |
3.18 |
static void |
682 |
|
|
getmove( /* get view change */ |
683 |
|
|
XButtonPressedEvent *ebut |
684 |
|
|
) |
685 |
gwlarson |
3.1 |
{ |
686 |
|
|
int movdir = MOVDIR(ebut->button); |
687 |
|
|
int movorb = MOVORB(ebut->state); |
688 |
|
|
int moved = 0; |
689 |
|
|
Window rootw, childw; |
690 |
|
|
int rootx, rooty, wx, wy; |
691 |
|
|
unsigned int statemask; |
692 |
|
|
|
693 |
gwlarson |
3.3 |
copylastv( movorb ? (movdir ? "left/right" : "up/down") : |
694 |
|
|
(movdir ? "fore/back" : "rotate") ); |
695 |
gwlarson |
3.1 |
XNoOp(ourdisplay); |
696 |
|
|
|
697 |
|
|
while (!XCheckMaskEvent(ourdisplay, |
698 |
|
|
ButtonReleaseMask, levptr(XEvent))) { |
699 |
greg |
3.13 |
/* pause so as not to move too fast */ |
700 |
|
|
waitabit(); |
701 |
gwlarson |
3.1 |
|
702 |
|
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
703 |
|
|
&rootx, &rooty, &wx, &wy, &statemask)) |
704 |
|
|
break; /* on another screen */ |
705 |
|
|
|
706 |
|
|
if (!moveview(wx, vres-1-wy, movdir, movorb)) { |
707 |
|
|
sleep(1); |
708 |
|
|
continue; |
709 |
|
|
} else |
710 |
|
|
moved++; |
711 |
|
|
} |
712 |
|
|
if (!moved) { /* do final motion */ |
713 |
|
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
714 |
|
|
wx = levptr(XButtonReleasedEvent)->x; |
715 |
|
|
wy = levptr(XButtonReleasedEvent)->y; |
716 |
|
|
moveview(wx, vres-1-wy, movdir, movorb); |
717 |
|
|
} |
718 |
|
|
} |
719 |
|
|
|
720 |
|
|
|
721 |
schorsch |
3.18 |
static int |
722 |
|
|
getintersect( /* intersect ray with scene geometry */ |
723 |
|
|
FVECT wp, /* returned world intersection point */ |
724 |
|
|
FVECT org, |
725 |
|
|
FVECT dir, |
726 |
|
|
double md |
727 |
|
|
) |
728 |
gwlarson |
3.1 |
{ |
729 |
|
|
float fbuf[6]; |
730 |
|
|
/* check to see if rtrace is running */ |
731 |
schorsch |
3.15 |
/* if (rtpd.pid <= 0) */ |
732 |
|
|
if (!rtpd.running) |
733 |
gwlarson |
3.1 |
return(0); |
734 |
|
|
/* assign origin */ |
735 |
|
|
fbuf[0] = org[0]; fbuf[1] = org[1]; fbuf[2] = org[2]; |
736 |
|
|
/* compute clipping distance */ |
737 |
|
|
if (md <= FTINY) md = FHUGE; |
738 |
|
|
fbuf[3] = dir[0]*md; fbuf[4] = dir[1]*md; fbuf[5] = dir[2]*md; |
739 |
|
|
/* trace that ray */ |
740 |
schorsch |
3.15 |
if (process(&rtpd, (char *)fbuf, (char *)fbuf, |
741 |
greg |
3.13 |
4*sizeof(float), 6*sizeof(float)) != 4*sizeof(float)) |
742 |
gwlarson |
3.1 |
error(INTERNAL, "error getting data back from rtrace process"); |
743 |
|
|
if (fbuf[3] >= .99*FHUGE) |
744 |
|
|
return(0); /* missed local objects */ |
745 |
|
|
wp[0] = fbuf[0]; wp[1] = fbuf[1]; wp[2] = fbuf[2]; |
746 |
|
|
return(1); /* else return world intersection */ |
747 |
|
|
} |
748 |
|
|
|
749 |
|
|
|
750 |
schorsch |
3.18 |
static void |
751 |
|
|
setglpersp( /* set perspective view in GL */ |
752 |
|
|
register VIEW *vp |
753 |
|
|
) |
754 |
gwlarson |
3.1 |
{ |
755 |
|
|
double d, xmin, xmax, ymin, ymax, zmin, zmax; |
756 |
|
|
|
757 |
gwlarson |
3.2 |
zmin = 0.1; |
758 |
|
|
zmax = 1000.; |
759 |
gwlarson |
3.1 |
if (thisview.vfore > FTINY) |
760 |
|
|
zmin = thisview.vfore; |
761 |
|
|
if (thisview.vaft > FTINY) |
762 |
|
|
zmax = thisview.vaft; |
763 |
|
|
xmax = zmin * tan(PI/180./2. * thisview.horiz); |
764 |
|
|
xmin = -xmax; |
765 |
|
|
d = thisview.hoff * (xmax - xmin); |
766 |
|
|
xmin += d; xmax += d; |
767 |
|
|
ymax = zmin * tan(PI/180./2. * thisview.vert); |
768 |
|
|
ymin = -ymax; |
769 |
|
|
d = thisview.voff * (ymax - ymin); |
770 |
|
|
ymin += d; ymax += d; |
771 |
|
|
/* set view matrix */ |
772 |
|
|
glMatrixMode(GL_PROJECTION); |
773 |
|
|
glLoadIdentity(); |
774 |
|
|
glFrustum(xmin, xmax, ymin, ymax, zmin, zmax); |
775 |
|
|
gluLookAt(thisview.vp[0], thisview.vp[1], thisview.vp[2], |
776 |
|
|
thisview.vp[0] + thisview.vdir[0], |
777 |
|
|
thisview.vp[1] + thisview.vdir[1], |
778 |
|
|
thisview.vp[2] + thisview.vdir[2], |
779 |
|
|
thisview.vup[0], thisview.vup[1], thisview.vup[2]); |
780 |
|
|
rgl_checkerr("setting perspective view"); |
781 |
|
|
} |
782 |
|
|
|
783 |
|
|
|
784 |
schorsch |
3.18 |
static int |
785 |
|
|
getkey( /* get input key */ |
786 |
|
|
register XKeyPressedEvent *ekey |
787 |
|
|
) |
788 |
gwlarson |
3.1 |
{ |
789 |
|
|
int n; |
790 |
|
|
char buf[8]; |
791 |
|
|
|
792 |
|
|
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
793 |
|
|
if (n != 1) |
794 |
|
|
return(1); |
795 |
|
|
switch (buf[0]) { |
796 |
|
|
case 'h': /* turn on height motion lock */ |
797 |
|
|
headlocked = 1; |
798 |
|
|
break; |
799 |
|
|
case 'H': /* turn off height motion lock */ |
800 |
|
|
headlocked = 0; |
801 |
|
|
break; |
802 |
|
|
case 'l': /* retrieve last (premouse) view */ |
803 |
gwlarson |
3.2 |
if (lastview.type) { |
804 |
gwlarson |
3.1 |
VIEW vtmp; |
805 |
schorsch |
3.17 |
vtmp = thisview; |
806 |
gwlarson |
3.1 |
dev_view(&lastview); |
807 |
schorsch |
3.17 |
lastview = vtmp; |
808 |
gwlarson |
3.1 |
} else |
809 |
|
|
XBell(ourdisplay, 0); |
810 |
|
|
break; |
811 |
|
|
case 'n': /* move to next standard view */ |
812 |
|
|
gotoview(currentview+1); |
813 |
|
|
break; |
814 |
|
|
case 'p': /* move to last standard view */ |
815 |
|
|
gotoview(currentview-1); |
816 |
|
|
break; |
817 |
|
|
case '+': /* zoom in */ |
818 |
|
|
zoomview(100+ZOOMPCT, ekey->x, vres-1-ekey->y); |
819 |
|
|
break; |
820 |
|
|
case '-': /* zoom out */ |
821 |
|
|
zoomview(100-ZOOMPCT, ekey->x, vres-1-ekey->y); |
822 |
|
|
break; |
823 |
|
|
case 'v': /* spit current view to stdout */ |
824 |
|
|
fputs(VIEWSTR, stdout); |
825 |
|
|
fprintview(&thisview, stdout); |
826 |
|
|
fputc('\n', stdout); |
827 |
|
|
break; |
828 |
|
|
case 'V': /* append view to rad file */ |
829 |
|
|
appendview(NULL, &thisview); |
830 |
|
|
break; |
831 |
|
|
case 'q': /* quit the program */ |
832 |
|
|
return(0); |
833 |
|
|
default: |
834 |
|
|
XBell(ourdisplay, 0); |
835 |
|
|
break; |
836 |
|
|
} |
837 |
|
|
return(1); |
838 |
|
|
} |
839 |
|
|
|
840 |
|
|
|
841 |
schorsch |
3.18 |
static void |
842 |
|
|
zoomview( /* zoom in or out around (dx,dy) */ |
843 |
|
|
int pct, |
844 |
|
|
int dx, |
845 |
|
|
int dy |
846 |
|
|
) |
847 |
gwlarson |
3.1 |
{ |
848 |
|
|
double h, v; |
849 |
|
|
|
850 |
schorsch |
3.18 |
if ((pct == 100) | (pct <= 0)) |
851 |
gwlarson |
3.1 |
return; |
852 |
|
|
copylastv("zooming"); |
853 |
|
|
h = (dx+.5)/hres - 0.5; |
854 |
|
|
v = (dy+.5)/vres - 0.5; |
855 |
|
|
h *= (1. - 100./pct); |
856 |
|
|
v *= (1. - 100./pct); |
857 |
|
|
thisview.vdir[0] += h*thisview.hvec[0] + v*thisview.vvec[0]; |
858 |
|
|
thisview.vdir[1] += h*thisview.hvec[1] + v*thisview.vvec[1]; |
859 |
|
|
thisview.vdir[2] += h*thisview.hvec[2] + v*thisview.vvec[2]; |
860 |
|
|
thisview.horiz = 2.*180./PI * atan( 100./pct * |
861 |
|
|
tan(PI/180./2.*thisview.horiz) ); |
862 |
|
|
thisview.vert = 2.*180./PI * atan( 100./pct * |
863 |
|
|
tan(PI/180./2.*thisview.vert) ); |
864 |
|
|
setview(&thisview); |
865 |
|
|
dev_view(&thisview); |
866 |
|
|
} |
867 |
|
|
|
868 |
|
|
|
869 |
schorsch |
3.18 |
static void |
870 |
|
|
gotoview( /* go to specified view number */ |
871 |
|
|
int vwnum |
872 |
|
|
) |
873 |
gwlarson |
3.1 |
{ |
874 |
|
|
if (vwnum < 0) |
875 |
|
|
for (vwnum = currentview; vwl[vwnum+1].v != NULL; vwnum++) |
876 |
|
|
; |
877 |
|
|
else if (vwnum >= MAXVIEW || vwl[vwnum].v == NULL) |
878 |
|
|
vwnum = 0; |
879 |
gwlarson |
3.4 |
copylastv("standard view"); |
880 |
gwlarson |
3.1 |
dev_view(vwl[currentview=vwnum].v); |
881 |
|
|
} |
882 |
|
|
|
883 |
|
|
|
884 |
schorsch |
3.18 |
static void |
885 |
|
|
appendview( /* append standard view */ |
886 |
|
|
char *nm, |
887 |
|
|
VIEW *vp |
888 |
|
|
) |
889 |
gwlarson |
3.1 |
{ |
890 |
|
|
FILE *fp; |
891 |
|
|
/* check if already in there */ |
892 |
schorsch |
3.16 |
if (!memcmp(&thisview, vwl[currentview].v, sizeof(VIEW))) { |
893 |
gwlarson |
3.1 |
error(COMMAND, "view already in standard list"); |
894 |
|
|
return; |
895 |
|
|
} |
896 |
|
|
/* append to file */ |
897 |
|
|
if ((fp = fopen(radfile, "a")) == NULL) { |
898 |
|
|
error(COMMAND, "cannot append rad input file"); |
899 |
|
|
return; |
900 |
|
|
} |
901 |
|
|
fputs("view=", fp); |
902 |
|
|
if (nm != NULL) { |
903 |
|
|
fputc(' ', fp); fputs(nm, fp); |
904 |
|
|
} |
905 |
|
|
fprintview(vp, fp); fputc('\n', fp); |
906 |
|
|
fclose(fp); |
907 |
|
|
/* append to our list */ |
908 |
|
|
while (vwl[currentview].v != NULL) |
909 |
|
|
currentview++; |
910 |
|
|
if (currentview >= MAXVIEW) |
911 |
|
|
error(INTERNAL, "too many views in appendview"); |
912 |
|
|
vwl[currentview].v = (VIEW *)bmalloc(sizeof(VIEW)); |
913 |
schorsch |
3.17 |
*(vwl[currentview].v) = thisview; |
914 |
gwlarson |
3.1 |
if (nm != NULL) |
915 |
|
|
vwl[currentview].nam = savqstr(nm); |
916 |
|
|
} |
917 |
|
|
|
918 |
|
|
|
919 |
schorsch |
3.18 |
static void |
920 |
|
|
copylastv( /* copy last view position */ |
921 |
|
|
char *cause |
922 |
|
|
) |
923 |
gwlarson |
3.1 |
{ |
924 |
gwlarson |
3.2 |
static char *lastvc; |
925 |
|
|
|
926 |
gwlarson |
3.1 |
if (cause == lastvc) |
927 |
|
|
return; /* only record one view per cause */ |
928 |
|
|
lastvc = cause; |
929 |
schorsch |
3.17 |
lastview = thisview; |
930 |
gwlarson |
3.1 |
} |
931 |
|
|
|
932 |
|
|
|
933 |
schorsch |
3.18 |
static void |
934 |
|
|
fixwindow( /* repair damage to window */ |
935 |
|
|
register XExposeEvent *eexp |
936 |
|
|
) |
937 |
gwlarson |
3.1 |
{ |
938 |
schorsch |
3.18 |
if ((hres == 0) | (vres == 0)) { /* first exposure */ |
939 |
gwlarson |
3.1 |
resizewindow((XConfigureEvent *)eexp); |
940 |
|
|
return; |
941 |
|
|
} |
942 |
|
|
if (eexp->count) /* wait for final exposure */ |
943 |
|
|
return; |
944 |
|
|
/* rerender everything */ |
945 |
|
|
render(); |
946 |
|
|
} |
947 |
|
|
|
948 |
|
|
|
949 |
schorsch |
3.18 |
static void |
950 |
|
|
resizewindow( /* resize window */ |
951 |
|
|
register XConfigureEvent *ersz |
952 |
|
|
) |
953 |
gwlarson |
3.1 |
{ |
954 |
|
|
static char resizing[] = "resizing window"; |
955 |
|
|
double wa, va; |
956 |
|
|
|
957 |
|
|
glViewport(0, 0, hres=ersz->width, vres=ersz->height); |
958 |
|
|
if (hres > maxhres) maxhres = hres; |
959 |
|
|
if (vres > maxvres) maxvres = vres; |
960 |
gwlarson |
3.5 |
if (no_render) |
961 |
gwlarson |
3.2 |
return; |
962 |
gwlarson |
3.1 |
wa = (vres*pheight)/(hres*pwidth); |
963 |
|
|
va = viewaspect(&thisview); |
964 |
|
|
if (va > wa+.05) { |
965 |
|
|
copylastv(resizing); |
966 |
|
|
thisview.vert = 2.*180./PI * |
967 |
|
|
atan( tan(PI/180./2. * thisview.horiz) * wa ); |
968 |
|
|
} else if (va < wa-.05) { |
969 |
|
|
copylastv(resizing); |
970 |
|
|
thisview.horiz = 2.*180./PI * |
971 |
|
|
atan( tan(PI/180./2. * thisview.vert) / wa ); |
972 |
|
|
} else |
973 |
|
|
return; |
974 |
|
|
setview(&thisview); |
975 |
|
|
dev_view(&thisview); |
976 |
|
|
} |