1 |
gwlarson |
3.1 |
#ifndef lint |
2 |
greg |
3.31 |
static const char RCSid[] = "$Id: rhd_ogl.c,v 3.30 2006/06/07 17:52:04 schorsch Exp $"; |
3 |
gwlarson |
3.1 |
#endif |
4 |
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/* |
5 |
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* OpenGL driver for holodeck display. |
6 |
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* Based on GLX driver using T-mesh. |
7 |
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* |
8 |
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* Define symbol STEREO for stereo viewing. |
9 |
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* Define symbol DOBJ for display object viewing. |
10 |
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*/ |
11 |
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12 |
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#ifdef NOSTEREO |
13 |
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#ifdef STEREO |
14 |
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#undef STEREO |
15 |
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#else |
16 |
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#undef NOSTEREO |
17 |
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#endif |
18 |
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#endif |
19 |
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20 |
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21 |
schorsch |
3.24 |
#include <time.h> |
22 |
gwlarson |
3.1 |
#include <GL/glx.h> |
23 |
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#include <GL/glu.h> |
24 |
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#ifdef STEREO |
25 |
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#include <X11/extensions/SGIStereo.h> |
26 |
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#endif |
27 |
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28 |
schorsch |
3.24 |
#include "standard.h" |
29 |
gwlarson |
3.1 |
#include "rhd_odraw.h" |
30 |
schorsch |
3.24 |
#include "rhdisp.h" |
31 |
greg |
3.25 |
#include "paths.h" |
32 |
gwlarson |
3.1 |
#ifdef DOBJ |
33 |
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#include "rhdobj.h" |
34 |
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#endif |
35 |
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36 |
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#include "x11icon.h" |
37 |
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38 |
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#ifndef RAYQLEN |
39 |
gwlarson |
3.11 |
#define RAYQLEN 0 /* max. rays to queue before flush */ |
40 |
gwlarson |
3.1 |
#endif |
41 |
gwlarson |
3.15 |
#ifndef MINWIDTH |
42 |
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#define MINWIDTH 480 /* minimum graphics window width */ |
43 |
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#define MINHEIGHT 400 /* minimum graphics window height */ |
44 |
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#endif |
45 |
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#ifndef VIEWDIST |
46 |
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#define VIEWDIST 356 /* assumed viewing distance (mm) */ |
47 |
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#endif |
48 |
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#ifndef BORWIDTH |
49 |
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#define BORWIDTH 5 /* border width */ |
50 |
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#endif |
51 |
gwlarson |
3.1 |
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52 |
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#ifndef FEQ |
53 |
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#define FEQ(a,b) ((a)-(b) <= FTINY && (a)-(b) >= -FTINY) |
54 |
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#endif |
55 |
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56 |
gwlarson |
3.7 |
#define VWHEADLOCK 01 /* head position is locked flag */ |
57 |
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#define VWPERSP 02 /* perspective view is set */ |
58 |
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#define VWORTHO 04 /* orthographic view is set */ |
59 |
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#define VWCHANGE 010 /* view has changed */ |
60 |
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#define VWSTEADY 020 /* view is now steady */ |
61 |
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#define VWMAPPED 040 /* window is mapped */ |
62 |
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63 |
gwlarson |
3.1 |
#define GAMMA 1.4 /* default gamma correction */ |
64 |
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65 |
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#define FRAMESTATE(s) (((s)&(ShiftMask|ControlMask))==(ShiftMask|ControlMask)) |
66 |
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67 |
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#define MOVPCT 7 /* percent distance to move /frame */ |
68 |
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#define MOVDIR(b) ((b)==Button1 ? 1 : (b)==Button2 ? 0 : -1) |
69 |
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#define MOVDEG (-5) /* degrees to orbit CW/down /frame */ |
70 |
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#define MOVORB(s) ((s)&ShiftMask ? 1 : (s)&ControlMask ? -1 : 0) |
71 |
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72 |
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#define setstereobuf(bid) (glXWaitGL(), \ |
73 |
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XSGISetStereoBuffer(ourdisplay, gwind, bid), \ |
74 |
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glXWaitX()) |
75 |
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76 |
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#define ourscreen DefaultScreen(ourdisplay) |
77 |
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#define ourroot RootWindow(ourdisplay,ourscreen) |
78 |
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#define ourmask (StructureNotifyMask|ExposureMask|KeyPressMask|\ |
79 |
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ButtonPressMask|ButtonReleaseMask) |
80 |
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81 |
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#define levptr(etype) ((etype *)¤tevent) |
82 |
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83 |
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struct driver odev; /* global device driver structure */ |
84 |
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85 |
greg |
3.26 |
TMstruct *tmGlobal; /* global tone-mapping structure */ |
86 |
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87 |
gwlarson |
3.1 |
char odev_args[64]; /* command arguments */ |
88 |
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89 |
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static GLfloat *depthbuffer = NULL; /* depth buffer */ |
90 |
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91 |
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#ifdef STEREO |
92 |
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static VIEW vwright; /* right eye view */ |
93 |
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static GLfloat *depthright = NULL; /* right depth buffer */ |
94 |
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#endif |
95 |
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96 |
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static int rayqleft = 0; /* rays left to queue before flush */ |
97 |
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98 |
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static XEvent currentevent; /* current event */ |
99 |
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100 |
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static unsigned long ourblack=0, ourwhite=~0; |
101 |
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102 |
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static Display *ourdisplay = NULL; /* our display */ |
103 |
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static XVisualInfo *ourvinf; /* our visual information */ |
104 |
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static Window gwind = 0; /* our graphics window */ |
105 |
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static GLXContext gctx; /* our GLX context */ |
106 |
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107 |
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static double pwidth, pheight; /* pixel dimensions (mm) */ |
108 |
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109 |
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static double dev_zmin, dev_zmax; /* fore and aft clipping plane dist. */ |
110 |
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static double dev_zrat; /* (1. - dev_zmin/dev_zmax) */ |
111 |
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112 |
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#define setzrat() (dev_zrat = 1. - dev_zmin/dev_zmax) |
113 |
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#define mapdepth(d) ((d)>0.9995 ? FHUGE : dev_zmin/(1.-(d)*dev_zrat)) |
114 |
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115 |
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static int inpresflags; /* input result flags */ |
116 |
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117 |
gwlarson |
3.7 |
static int viewflags; /* what's happening with view */ |
118 |
gwlarson |
3.1 |
|
119 |
schorsch |
3.24 |
/* |
120 |
gwlarson |
3.1 |
static int resizewindow(), getevent(), getkey(), moveview(), wipeclean(), |
121 |
gwlarson |
3.2 |
xferdepth(), freedepth(), setglortho(), |
122 |
gwlarson |
3.1 |
setglpersp(), getframe(), getmove(), fixwindow(), mytmflags(); |
123 |
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124 |
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static double getdistance(); |
125 |
schorsch |
3.24 |
*/ |
126 |
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static void checkglerr(char *where); |
127 |
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static void xferdepth(void); |
128 |
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static void freedepth(void); |
129 |
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static double getdistance(int dx, int dy, FVECT direc); |
130 |
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static int mytmflags(void); |
131 |
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static void getevent(void); |
132 |
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static void draw3dline(register FVECT wp[2]); |
133 |
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static void draw_grids(int fore); |
134 |
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static int moveview(int dx, int dy, int mov, int orb); |
135 |
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static void getframe(XButtonPressedEvent *ebut); |
136 |
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static void getmove(XButtonPressedEvent *ebut); |
137 |
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static void getkey(register XKeyPressedEvent *ekey); |
138 |
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static void fixwindow(register XExposeEvent *eexp); |
139 |
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static void resizewindow(register XConfigureEvent *ersz); |
140 |
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static void waitabit(void); |
141 |
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static void setglpersp(void); |
142 |
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static void setglortho(void); |
143 |
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static void wipeclean(void); |
144 |
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145 |
gwlarson |
3.1 |
|
146 |
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#ifdef STEREO |
147 |
schorsch |
3.24 |
static void pushright(void); |
148 |
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static void popright(void); |
149 |
gwlarson |
3.1 |
#endif |
150 |
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151 |
gwlarson |
3.2 |
extern int gmPortals; /* GL portal list id */ |
152 |
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153 |
gwlarson |
3.1 |
extern time_t time(); |
154 |
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155 |
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156 |
schorsch |
3.24 |
extern void |
157 |
gwlarson |
3.1 |
dev_open(id) /* initialize GLX driver */ |
158 |
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char *id; |
159 |
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{ |
160 |
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extern char *getenv(); |
161 |
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static RGBPRIMS myprims = STDPRIMS; |
162 |
gwlarson |
3.6 |
static int atlBest[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
163 |
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GLX_RED_SIZE,8, GLX_GREEN_SIZE,8, |
164 |
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GLX_BLUE_SIZE,8, GLX_DEPTH_SIZE,15, None}; |
165 |
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static int atlOK[] = {GLX_RGBA, GLX_DOUBLEBUFFER, |
166 |
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GLX_RED_SIZE,4, GLX_GREEN_SIZE,4, |
167 |
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GLX_BLUE_SIZE,4, GLX_DEPTH_SIZE,15, None}; |
168 |
gwlarson |
3.1 |
char *ev; |
169 |
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double gamval = GAMMA; |
170 |
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RGBPRIMP dpri = stdprims; |
171 |
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XSetWindowAttributes ourwinattr; |
172 |
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XWMHints ourxwmhints; |
173 |
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XSizeHints oursizhints; |
174 |
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/* check for unsupported stereo */ |
175 |
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#ifdef NOSTEREO |
176 |
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error(INTERNAL, "stereo display driver unavailable"); |
177 |
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#endif |
178 |
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/* open display server */ |
179 |
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ourdisplay = XOpenDisplay(NULL); |
180 |
gwlarson |
3.5 |
CHECK(ourdisplay==NULL, USER, |
181 |
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"cannot open X-windows; DISPLAY variable set?"); |
182 |
gwlarson |
3.1 |
#ifdef STEREO |
183 |
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switch (XSGIQueryStereoMode(ourdisplay, ourroot)) { |
184 |
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case STEREO_TOP: |
185 |
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case STEREO_BOTTOM: |
186 |
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break; |
187 |
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case STEREO_OFF: |
188 |
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error(USER, |
189 |
gwlarson |
3.5 |
"wrong video mode: run \"/usr/gfx/setmon -n STR_TOP\" first"); |
190 |
gwlarson |
3.1 |
case X_STEREO_UNSUPPORTED: |
191 |
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error(USER, "stereo mode not supported on this screen"); |
192 |
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default: |
193 |
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error(INTERNAL, "unknown stereo mode"); |
194 |
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} |
195 |
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#endif |
196 |
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/* find a usable visual */ |
197 |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlBest); |
198 |
gwlarson |
3.6 |
if (ourvinf == NULL) |
199 |
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ourvinf = glXChooseVisual(ourdisplay, ourscreen, atlOK); |
200 |
gwlarson |
3.5 |
CHECK(ourvinf==NULL, USER, "no suitable visuals available"); |
201 |
gwlarson |
3.1 |
/* get a context */ |
202 |
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gctx = glXCreateContext(ourdisplay, ourvinf, NULL, GL_TRUE); |
203 |
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/* set gamma and tone mapping */ |
204 |
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if ((ev = XGetDefault(ourdisplay, "radiance", "gamma")) != NULL |
205 |
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|| (ev = getenv("DISPLAY_GAMMA")) != NULL) |
206 |
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gamval = atof(ev); |
207 |
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if ((ev = getenv("DISPLAY_PRIMARIES")) != NULL && |
208 |
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sscanf(ev, "%f %f %f %f %f %f %f %f", |
209 |
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&myprims[RED][CIEX],&myprims[RED][CIEY], |
210 |
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&myprims[GRN][CIEX],&myprims[GRN][CIEY], |
211 |
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&myprims[BLU][CIEX],&myprims[BLU][CIEY], |
212 |
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&myprims[WHT][CIEX],&myprims[WHT][CIEY]) >= 6) |
213 |
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dpri = myprims; |
214 |
greg |
3.26 |
tmGlobal = tmInit(mytmflags(), dpri, gamval); |
215 |
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if (tmGlobal == NULL) |
216 |
gwlarson |
3.1 |
error(SYSTEM, "not enough memory in dev_open"); |
217 |
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/* open window */ |
218 |
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ourwinattr.background_pixel = ourblack; |
219 |
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ourwinattr.border_pixel = ourblack; |
220 |
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ourwinattr.event_mask = ourmask; |
221 |
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/* this is stupid */ |
222 |
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ourwinattr.colormap = XCreateColormap(ourdisplay, ourroot, |
223 |
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ourvinf->visual, AllocNone); |
224 |
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gwind = XCreateWindow(ourdisplay, ourroot, 0, 0, |
225 |
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DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH, |
226 |
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#ifdef STEREO |
227 |
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(DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH)/2, |
228 |
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#else |
229 |
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DisplayHeight(ourdisplay,ourscreen)-2*BORWIDTH, |
230 |
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#endif |
231 |
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BORWIDTH, ourvinf->depth, InputOutput, ourvinf->visual, |
232 |
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CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &ourwinattr); |
233 |
gwlarson |
3.5 |
CHECK(gwind==0, SYSTEM, "cannot create window"); |
234 |
gwlarson |
3.1 |
XStoreName(ourdisplay, gwind, id); |
235 |
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/* set window manager hints */ |
236 |
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ourxwmhints.flags = InputHint|IconPixmapHint; |
237 |
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ourxwmhints.input = True; |
238 |
greg |
3.28 |
ourxwmhints.icon_pixmap = XCreateBitmapFromData(ourdisplay, gwind, |
239 |
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(char *)x11icon_bits, x11icon_width, x11icon_height); |
240 |
gwlarson |
3.1 |
XSetWMHints(ourdisplay, gwind, &ourxwmhints); |
241 |
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oursizhints.min_width = MINWIDTH; |
242 |
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#ifdef STEREO |
243 |
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oursizhints.min_height = MINHEIGHT/2; |
244 |
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oursizhints.max_width = DisplayWidth(ourdisplay,ourscreen)-2*BORWIDTH; |
245 |
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oursizhints.max_height = (DisplayHeight(ourdisplay,ourscreen) - |
246 |
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2*BORWIDTH)/2; |
247 |
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oursizhints.flags = PMinSize|PMaxSize; |
248 |
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#else |
249 |
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oursizhints.min_height = MINHEIGHT; |
250 |
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oursizhints.flags = PMinSize; |
251 |
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#endif |
252 |
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XSetNormalHints(ourdisplay, gwind, &oursizhints); |
253 |
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/* set GLX context */ |
254 |
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glXMakeCurrent(ourdisplay, gwind, gctx); |
255 |
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glEnable(GL_DEPTH_TEST); |
256 |
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glDepthFunc(GL_LEQUAL); |
257 |
gwlarson |
3.9 |
glClearColor(0, 0, 0, 0); |
258 |
gwlarson |
3.1 |
glFrontFace(GL_CCW); |
259 |
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glDisable(GL_CULL_FACE); |
260 |
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
261 |
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
262 |
gwlarson |
3.10 |
glPixelStorei(GL_PACK_ALIGNMENT, 1); |
263 |
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
264 |
gwlarson |
3.1 |
/* figure out sensible view */ |
265 |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
266 |
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DisplayWidth(ourdisplay, ourscreen); |
267 |
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pheight = (double)DisplayHeightMM(ourdisplay, ourscreen) / |
268 |
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DisplayHeight(ourdisplay, ourscreen); |
269 |
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#ifdef STEREO |
270 |
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pheight *= 2.; |
271 |
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setstereobuf(STEREO_BUFFER_LEFT); |
272 |
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#endif |
273 |
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checkglerr("setting rendering parameters"); |
274 |
schorsch |
3.22 |
odev.v = stdview; |
275 |
gwlarson |
3.1 |
odev.v.type = VT_PER; |
276 |
gwlarson |
3.7 |
viewflags = VWSTEADY; /* view starts static */ |
277 |
gwlarson |
3.1 |
/* map the window */ |
278 |
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XMapWindow(ourdisplay, gwind); |
279 |
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dev_input(); /* sets size and view angles */ |
280 |
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if (!odInit(DisplayWidth(ourdisplay,ourscreen) * |
281 |
gwlarson |
3.11 |
DisplayHeight(ourdisplay,ourscreen) / 3)) |
282 |
gwlarson |
3.1 |
error(SYSTEM, "insufficient memory for value storage"); |
283 |
|
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odev.name = id; |
284 |
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odev.firstuse = 1; /* can't recycle samples */ |
285 |
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odev.ifd = ConnectionNumber(ourdisplay); |
286 |
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} |
287 |
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288 |
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289 |
schorsch |
3.24 |
extern void |
290 |
|
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dev_close(void) /* close our display and free resources */ |
291 |
gwlarson |
3.1 |
{ |
292 |
|
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#ifdef DOBJ |
293 |
|
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dobj_cleanup(); |
294 |
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#endif |
295 |
gwlarson |
3.2 |
freedepth(); |
296 |
|
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gmEndGeom(); |
297 |
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gmEndPortal(); |
298 |
gwlarson |
3.1 |
odDone(); |
299 |
|
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glXMakeCurrent(ourdisplay, None, NULL); |
300 |
|
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glXDestroyContext(ourdisplay, gctx); |
301 |
|
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XDestroyWindow(ourdisplay, gwind); |
302 |
|
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gwind = 0; |
303 |
|
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XCloseDisplay(ourdisplay); |
304 |
|
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ourdisplay = NULL; |
305 |
greg |
3.26 |
tmDone(tmGlobal); |
306 |
gwlarson |
3.1 |
odev.v.type = 0; |
307 |
|
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odev.hres = odev.vres = 0; |
308 |
|
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odev.ifd = -1; |
309 |
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} |
310 |
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311 |
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312 |
schorsch |
3.24 |
extern void |
313 |
|
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dev_clear(void) /* clear our representation */ |
314 |
gwlarson |
3.1 |
{ |
315 |
gwlarson |
3.10 |
viewflags |= VWCHANGE; /* pretend our view has changed */ |
316 |
|
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wipeclean(); /* clean off display and samples */ |
317 |
gwlarson |
3.12 |
dev_flush(); /* redraw geometry & get depth */ |
318 |
gwlarson |
3.1 |
rayqleft = 0; /* hold off update */ |
319 |
|
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} |
320 |
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321 |
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322 |
schorsch |
3.24 |
extern int |
323 |
|
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dev_view( /* assign new driver view */ |
324 |
|
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register VIEW *nv |
325 |
|
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) |
326 |
gwlarson |
3.1 |
{ |
327 |
greg |
3.29 |
#ifdef STEREO |
328 |
|
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double d; |
329 |
|
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#endif |
330 |
gwlarson |
3.1 |
if (nv->type != VT_PER || /* check view legality */ |
331 |
|
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nv->horiz > 160. || nv->vert > 160.) { |
332 |
|
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error(COMMAND, "illegal view type/angle"); |
333 |
|
|
nv->type = odev.v.type; |
334 |
|
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nv->horiz = odev.v.horiz; |
335 |
|
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nv->vert = odev.v.vert; |
336 |
|
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return(0); |
337 |
|
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} |
338 |
|
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if (nv != &odev.v) { |
339 |
|
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/* resize window? */ |
340 |
|
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if (!FEQ(nv->horiz,odev.v.horiz) || |
341 |
|
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!FEQ(nv->vert,odev.v.vert)) { |
342 |
|
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int dw = DisplayWidth(ourdisplay,ourscreen); |
343 |
|
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int dh = DisplayHeight(ourdisplay,ourscreen); |
344 |
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345 |
|
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dw -= 25; /* for window frame */ |
346 |
|
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dh -= 50; |
347 |
|
|
#ifdef STEREO |
348 |
|
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dh /= 2; |
349 |
|
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#endif |
350 |
|
|
odev.hres = 2.*VIEWDIST/pwidth * |
351 |
|
|
tan(PI/180./2.*nv->horiz); |
352 |
|
|
odev.vres = 2.*VIEWDIST/pheight * |
353 |
|
|
tan(PI/180./2.*nv->vert); |
354 |
|
|
if (odev.hres > dw) { |
355 |
|
|
odev.vres = dw * odev.vres / odev.hres; |
356 |
|
|
odev.hres = dw; |
357 |
|
|
} |
358 |
|
|
if (odev.vres > dh) { |
359 |
|
|
odev.hres = dh * odev.hres / odev.vres; |
360 |
|
|
odev.vres = dh; |
361 |
|
|
} |
362 |
|
|
XResizeWindow(ourdisplay, gwind, odev.hres, odev.vres); |
363 |
|
|
dev_input(); /* get resize event */ |
364 |
|
|
} |
365 |
schorsch |
3.22 |
odev.v = *nv; /* setview() already called */ |
366 |
gwlarson |
3.14 |
viewflags |= VWCHANGE; |
367 |
|
|
} |
368 |
gwlarson |
3.1 |
#ifdef STEREO |
369 |
schorsch |
3.22 |
vwright = *nv; |
370 |
gwlarson |
3.14 |
d = eyesepdist / sqrt(nv->hn2); |
371 |
|
|
VSUM(vwright.vp, nv->vp, nv->hvec, d); |
372 |
|
|
/* setview(&vwright); -- Unnecessary */ |
373 |
gwlarson |
3.1 |
#endif |
374 |
|
|
wipeclean(); |
375 |
|
|
return(1); |
376 |
|
|
} |
377 |
|
|
|
378 |
|
|
|
379 |
schorsch |
3.24 |
extern void |
380 |
|
|
dev_section( /* add octree for geometry rendering */ |
381 |
|
|
char *gfn, |
382 |
|
|
char *pfn |
383 |
|
|
) |
384 |
gwlarson |
3.1 |
{ |
385 |
gwlarson |
3.2 |
if (gfn == NULL) { |
386 |
|
|
gmEndGeom(); |
387 |
|
|
gmEndPortal(); |
388 |
gwlarson |
3.4 |
wipeclean(); /* new geometry, so redraw it */ |
389 |
gwlarson |
3.2 |
return; |
390 |
|
|
} |
391 |
|
|
if (access(gfn, R_OK) == 0) |
392 |
|
|
gmNewGeom(gfn); |
393 |
gwlarson |
3.1 |
#ifdef DEBUG |
394 |
|
|
else { |
395 |
gwlarson |
3.2 |
sprintf(errmsg, "cannot load octree \"%s\"", gfn); |
396 |
gwlarson |
3.1 |
error(WARNING, errmsg); |
397 |
|
|
} |
398 |
|
|
#endif |
399 |
gwlarson |
3.2 |
if (pfn != NULL) |
400 |
|
|
gmNewPortal(pfn); |
401 |
gwlarson |
3.1 |
} |
402 |
|
|
|
403 |
|
|
|
404 |
schorsch |
3.24 |
extern void |
405 |
|
|
dev_auxcom( /* process an auxiliary command */ |
406 |
|
|
char *cmd, |
407 |
|
|
char *args |
408 |
|
|
) |
409 |
gwlarson |
3.1 |
{ |
410 |
|
|
#ifdef DOBJ |
411 |
gwlarson |
3.12 |
int vischange; |
412 |
|
|
|
413 |
|
|
if ((vischange = dobj_command(cmd, args)) >= 0) { |
414 |
|
|
if (vischange) { |
415 |
|
|
imm_mode = beam_sync(1) > 0; |
416 |
|
|
dev_clear(); |
417 |
|
|
} |
418 |
gwlarson |
3.1 |
return; |
419 |
gwlarson |
3.12 |
} |
420 |
gwlarson |
3.1 |
#endif |
421 |
|
|
sprintf(errmsg, "%s: unknown command", cmd); |
422 |
|
|
error(COMMAND, errmsg); |
423 |
|
|
} |
424 |
|
|
|
425 |
|
|
|
426 |
schorsch |
3.24 |
extern VIEW * |
427 |
|
|
dev_auxview( /* return nth auxiliary view */ |
428 |
|
|
int n, |
429 |
|
|
int hvres[2] |
430 |
|
|
) |
431 |
gwlarson |
3.1 |
{ |
432 |
|
|
hvres[0] = odev.hres; hvres[1] = odev.vres; |
433 |
|
|
if (n == 0) |
434 |
|
|
return(&odev.v); |
435 |
|
|
#ifdef STEREO |
436 |
|
|
if (n == 1) |
437 |
|
|
return(&vwright); |
438 |
|
|
#endif |
439 |
|
|
return(NULL); |
440 |
|
|
} |
441 |
|
|
|
442 |
|
|
|
443 |
schorsch |
3.24 |
extern int |
444 |
|
|
dev_input(void) /* get X11 input */ |
445 |
gwlarson |
3.1 |
{ |
446 |
|
|
inpresflags = 0; |
447 |
|
|
|
448 |
|
|
do |
449 |
|
|
getevent(); |
450 |
|
|
|
451 |
|
|
while (XPending(ourdisplay) > 0); |
452 |
|
|
|
453 |
|
|
odev.inpready = 0; |
454 |
|
|
|
455 |
|
|
return(inpresflags); |
456 |
|
|
} |
457 |
|
|
|
458 |
|
|
|
459 |
schorsch |
3.24 |
extern void |
460 |
|
|
dev_value( /* add a pixel value to our texture */ |
461 |
|
|
COLR c, |
462 |
|
|
FVECT d, |
463 |
|
|
FVECT p |
464 |
|
|
) |
465 |
gwlarson |
3.1 |
{ |
466 |
|
|
#ifdef DOBJ |
467 |
|
|
if (dobj_lightsamp != NULL) { /* in light source sampling */ |
468 |
|
|
(*dobj_lightsamp)(c, d, p); |
469 |
|
|
return; |
470 |
|
|
} |
471 |
|
|
#endif |
472 |
|
|
odSample(c, d, p); /* add to display representation */ |
473 |
|
|
if (!--rayqleft) |
474 |
|
|
dev_flush(); /* flush output */ |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
|
478 |
schorsch |
3.24 |
extern int |
479 |
|
|
dev_flush(void) /* flush output as appropriate */ |
480 |
gwlarson |
3.1 |
{ |
481 |
|
|
int ndrawn; |
482 |
|
|
|
483 |
gwlarson |
3.7 |
if ((viewflags&(VWMAPPED|VWPERSP)) == (VWMAPPED|VWPERSP)) { |
484 |
gwlarson |
3.1 |
#ifdef STEREO |
485 |
|
|
pushright(); /* draw right eye */ |
486 |
gwlarson |
3.3 |
ndrawn = gmDrawGeom(); |
487 |
gwlarson |
3.1 |
#ifdef DOBJ |
488 |
gwlarson |
3.3 |
ndrawn += dobj_render(); |
489 |
gwlarson |
3.1 |
#endif |
490 |
|
|
checkglerr("rendering right eye"); |
491 |
|
|
popright(); /* draw left eye */ |
492 |
|
|
#endif |
493 |
gwlarson |
3.3 |
ndrawn = gmDrawGeom(); |
494 |
gwlarson |
3.1 |
#ifdef DOBJ |
495 |
|
|
ndrawn += dobj_render(); |
496 |
|
|
#endif |
497 |
gwlarson |
3.6 |
glXSwapBuffers(ourdisplay, gwind); |
498 |
gwlarson |
3.1 |
checkglerr("rendering base view"); |
499 |
|
|
} |
500 |
gwlarson |
3.7 |
if ((viewflags&(VWMAPPED|VWSTEADY|VWPERSP|VWORTHO)) == |
501 |
|
|
(VWMAPPED|VWSTEADY|VWPERSP)) { |
502 |
|
|
/* first time after steady */ |
503 |
|
|
if (ndrawn) |
504 |
|
|
xferdepth(); /* transfer and clear depth */ |
505 |
|
|
setglortho(); /* set orthographic view */ |
506 |
|
|
|
507 |
|
|
} |
508 |
|
|
if ((viewflags&(VWMAPPED|VWSTEADY|VWPERSP|VWORTHO)) == |
509 |
|
|
(VWMAPPED|VWSTEADY|VWORTHO)) { |
510 |
|
|
/* else update cones */ |
511 |
gwlarson |
3.1 |
#ifdef STEREO |
512 |
gwlarson |
3.7 |
pushright(); |
513 |
|
|
odUpdate(1); /* draw right eye */ |
514 |
|
|
popright(); |
515 |
gwlarson |
3.1 |
#endif |
516 |
gwlarson |
3.7 |
odUpdate(0); /* draw left eye */ |
517 |
|
|
glFlush(); /* flush OpenGL */ |
518 |
|
|
} |
519 |
gwlarson |
3.1 |
rayqleft = RAYQLEN; |
520 |
|
|
/* flush X11 and return # pending */ |
521 |
|
|
return(odev.inpready = XPending(ourdisplay)); |
522 |
|
|
} |
523 |
|
|
|
524 |
|
|
|
525 |
schorsch |
3.24 |
static void |
526 |
|
|
checkglerr( /* check for GL or GLU error */ |
527 |
|
|
char *where |
528 |
|
|
) |
529 |
gwlarson |
3.1 |
{ |
530 |
|
|
register GLenum errcode; |
531 |
|
|
|
532 |
|
|
while ((errcode = glGetError()) != GL_NO_ERROR) { |
533 |
|
|
sprintf(errmsg, "OpenGL error %s: %s", |
534 |
|
|
where, gluErrorString(errcode)); |
535 |
|
|
error(WARNING, errmsg); |
536 |
|
|
} |
537 |
|
|
} |
538 |
|
|
|
539 |
|
|
|
540 |
schorsch |
3.24 |
static void |
541 |
|
|
xferdepth(void) /* load and clear depth buffer */ |
542 |
gwlarson |
3.1 |
{ |
543 |
|
|
register GLfloat *dbp; |
544 |
gwlarson |
3.9 |
register GLubyte *pbuf; |
545 |
gwlarson |
3.1 |
|
546 |
gwlarson |
3.3 |
if (depthbuffer == NULL) { /* allocate private depth buffer */ |
547 |
gwlarson |
3.1 |
#ifdef STEREO |
548 |
|
|
depthright = (GLfloat *)malloc( |
549 |
|
|
odev.hres*odev.vres*sizeof(GLfloat)); |
550 |
|
|
#endif |
551 |
|
|
depthbuffer = (GLfloat *)malloc( |
552 |
|
|
odev.hres*odev.vres*sizeof(GLfloat)); |
553 |
gwlarson |
3.5 |
CHECK(depthbuffer==NULL, SYSTEM, "out of memory in xferdepth"); |
554 |
gwlarson |
3.1 |
} |
555 |
gwlarson |
3.3 |
/* allocate alpha buffer for portals */ |
556 |
|
|
if (gmPortals) |
557 |
gwlarson |
3.10 |
pbuf = (GLubyte *)malloc(odev.hres*odev.vres*sizeof(GLubyte)); |
558 |
gwlarson |
3.3 |
else |
559 |
gwlarson |
3.9 |
pbuf = NULL; |
560 |
gwlarson |
3.1 |
#ifdef STEREO |
561 |
gwlarson |
3.12 |
pushright(); |
562 |
gwlarson |
3.1 |
glReadPixels(0, 0, odev.hres, odev.vres, |
563 |
|
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthright); |
564 |
gwlarson |
3.9 |
if (pbuf != NULL) { |
565 |
|
|
glClear(GL_COLOR_BUFFER_BIT); |
566 |
|
|
gmDrawPortals(0xff, -1, -1, -1); |
567 |
gwlarson |
3.3 |
glReadPixels(0, 0, odev.hres, odev.vres, |
568 |
gwlarson |
3.10 |
GL_RED, GL_UNSIGNED_BYTE, pbuf); |
569 |
gwlarson |
3.9 |
} |
570 |
gwlarson |
3.3 |
for (dbp = depthright + odev.hres*odev.vres; dbp-- > depthright; ) |
571 |
gwlarson |
3.10 |
if (pbuf != NULL && pbuf[dbp-depthright]&0x40) |
572 |
gwlarson |
3.3 |
*dbp = FHUGE; |
573 |
|
|
else |
574 |
|
|
*dbp = mapdepth(*dbp); |
575 |
|
|
glClear(GL_DEPTH_BUFFER_BIT); |
576 |
gwlarson |
3.1 |
odDepthMap(1, depthright); |
577 |
gwlarson |
3.12 |
popright(); |
578 |
gwlarson |
3.1 |
#endif |
579 |
gwlarson |
3.2 |
/* read back depth buffer */ |
580 |
gwlarson |
3.1 |
glReadPixels(0, 0, odev.hres, odev.vres, |
581 |
|
|
GL_DEPTH_COMPONENT, GL_FLOAT, depthbuffer); |
582 |
gwlarson |
3.9 |
if (pbuf != NULL) { |
583 |
|
|
glClear(GL_COLOR_BUFFER_BIT); /* find portals */ |
584 |
|
|
gmDrawPortals(0xff, -1, -1, -1); |
585 |
gwlarson |
3.2 |
glReadPixels(0, 0, odev.hres, odev.vres, |
586 |
gwlarson |
3.10 |
GL_RED, GL_UNSIGNED_BYTE, pbuf); |
587 |
|
|
#ifdef DEBUG |
588 |
|
|
glXSwapBuffers(ourdisplay, gwind); |
589 |
|
|
#endif |
590 |
gwlarson |
3.9 |
} |
591 |
gwlarson |
3.1 |
for (dbp = depthbuffer + odev.hres*odev.vres; dbp-- > depthbuffer; ) |
592 |
gwlarson |
3.10 |
if (pbuf != NULL && pbuf[dbp-depthbuffer]&0x40) |
593 |
gwlarson |
3.2 |
*dbp = FHUGE; |
594 |
|
|
else |
595 |
|
|
*dbp = mapdepth(*dbp); |
596 |
gwlarson |
3.3 |
glClear(GL_DEPTH_BUFFER_BIT); /* clear system depth buffer */ |
597 |
gwlarson |
3.1 |
odDepthMap(0, depthbuffer); /* transfer depth data */ |
598 |
gwlarson |
3.9 |
if (pbuf != NULL) |
599 |
greg |
3.19 |
free((void *)pbuf); /* free our portal buffer */ |
600 |
gwlarson |
3.1 |
} |
601 |
|
|
|
602 |
|
|
|
603 |
schorsch |
3.24 |
static void |
604 |
|
|
freedepth(void) /* free recorded depth buffer */ |
605 |
gwlarson |
3.2 |
{ |
606 |
|
|
if (depthbuffer == NULL) |
607 |
|
|
return; |
608 |
|
|
#ifdef STEREO |
609 |
|
|
odDepthMap(1, NULL); |
610 |
greg |
3.19 |
free((void *)depthright); |
611 |
gwlarson |
3.2 |
depthright = NULL; |
612 |
|
|
#endif |
613 |
|
|
odDepthMap(0, NULL); |
614 |
greg |
3.19 |
free((void *)depthbuffer); |
615 |
gwlarson |
3.2 |
depthbuffer = NULL; |
616 |
|
|
} |
617 |
|
|
|
618 |
|
|
|
619 |
gwlarson |
3.1 |
static double |
620 |
schorsch |
3.24 |
getdistance( /* distance from fore plane along view ray */ |
621 |
|
|
int dx, |
622 |
|
|
int dy, |
623 |
|
|
FVECT direc |
624 |
|
|
) |
625 |
gwlarson |
3.1 |
{ |
626 |
|
|
GLfloat gldepth; |
627 |
|
|
double dist; |
628 |
|
|
|
629 |
schorsch |
3.24 |
if ((dx<0) | (dx>=odev.hres) | (dy<0) | (dy>=odev.vres)) |
630 |
gwlarson |
3.1 |
return(FHUGE); |
631 |
|
|
if (depthbuffer != NULL) |
632 |
|
|
dist = depthbuffer[dy*odev.hres + dx]; |
633 |
|
|
else { |
634 |
|
|
glReadPixels(dx,dy, 1,1, GL_DEPTH_COMPONENT, |
635 |
|
|
GL_FLOAT, &gldepth); |
636 |
greg |
3.23 |
if (gldepth <= FTINY) |
637 |
|
|
return (FHUGE); /* call failed */ |
638 |
gwlarson |
3.3 |
dist = mapdepth(gldepth); |
639 |
gwlarson |
3.1 |
} |
640 |
|
|
if (dist >= .99*FHUGE) |
641 |
|
|
return(FHUGE); |
642 |
|
|
return((dist-odev.v.vfore)/DOT(direc,odev.v.vdir)); |
643 |
|
|
} |
644 |
|
|
|
645 |
|
|
|
646 |
|
|
#ifdef STEREO |
647 |
schorsch |
3.24 |
static void |
648 |
|
|
pushright(void) /* push on right view & buffer */ |
649 |
gwlarson |
3.1 |
{ |
650 |
|
|
double d; |
651 |
|
|
|
652 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
653 |
gwlarson |
3.7 |
if (viewflags & VWPERSP) { |
654 |
gwlarson |
3.1 |
glMatrixMode(GL_MODELVIEW); |
655 |
|
|
glPushMatrix(); |
656 |
|
|
d = -eyesepdist / sqrt(odev.v.hn2); |
657 |
|
|
glTranslated(d*odev.v.hvec[0], d*odev.v.hvec[1], |
658 |
|
|
d*odev.v.hvec[2]); |
659 |
|
|
checkglerr("setting right view"); |
660 |
|
|
} |
661 |
|
|
} |
662 |
|
|
|
663 |
|
|
|
664 |
schorsch |
3.24 |
static void |
665 |
|
|
popright(void) /* pop off right view & buffer */ |
666 |
gwlarson |
3.1 |
{ |
667 |
gwlarson |
3.7 |
if (viewflags & VWPERSP) { |
668 |
gwlarson |
3.1 |
glMatrixMode(GL_MODELVIEW); |
669 |
|
|
glPopMatrix(); |
670 |
|
|
} |
671 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
672 |
|
|
} |
673 |
|
|
#endif |
674 |
|
|
|
675 |
|
|
|
676 |
|
|
static int |
677 |
schorsch |
3.24 |
mytmflags(void) /* figure out tone mapping flags */ |
678 |
gwlarson |
3.1 |
{ |
679 |
|
|
extern char *progname; |
680 |
|
|
register char *cp, *tail; |
681 |
|
|
/* find basic name */ |
682 |
|
|
for (cp = tail = progname; *cp; cp++) |
683 |
|
|
if (*cp == '/') |
684 |
|
|
tail = cp+1; |
685 |
|
|
for (cp = tail; *cp && *cp != '.'; cp++) |
686 |
|
|
; |
687 |
|
|
#ifdef DEBUG |
688 |
|
|
if (cp > tail && cp[-1] == 'h') |
689 |
|
|
return(TM_F_HUMAN); |
690 |
|
|
else |
691 |
|
|
return(TM_F_CAMERA); |
692 |
|
|
#else |
693 |
|
|
if (cp > tail && cp[-1] == 'h') |
694 |
|
|
return(TM_F_HUMAN|TM_F_NOSTDERR); |
695 |
|
|
else |
696 |
|
|
return(TM_F_CAMERA|TM_F_NOSTDERR); |
697 |
|
|
#endif |
698 |
|
|
} |
699 |
|
|
|
700 |
|
|
|
701 |
schorsch |
3.24 |
static void |
702 |
|
|
getevent(void) /* get next event */ |
703 |
gwlarson |
3.1 |
{ |
704 |
|
|
XNextEvent(ourdisplay, levptr(XEvent)); |
705 |
|
|
switch (levptr(XEvent)->type) { |
706 |
|
|
case ConfigureNotify: |
707 |
|
|
resizewindow(levptr(XConfigureEvent)); |
708 |
|
|
break; |
709 |
|
|
case UnmapNotify: |
710 |
gwlarson |
3.7 |
viewflags &= ~VWMAPPED; |
711 |
gwlarson |
3.1 |
break; |
712 |
|
|
case MapNotify: |
713 |
gwlarson |
3.2 |
odRemap(0); |
714 |
gwlarson |
3.7 |
viewflags |= VWMAPPED; |
715 |
gwlarson |
3.1 |
break; |
716 |
|
|
case Expose: |
717 |
|
|
fixwindow(levptr(XExposeEvent)); |
718 |
|
|
break; |
719 |
|
|
case KeyPress: |
720 |
|
|
getkey(levptr(XKeyPressedEvent)); |
721 |
|
|
break; |
722 |
|
|
case ButtonPress: |
723 |
|
|
if (FRAMESTATE(levptr(XButtonPressedEvent)->state)) |
724 |
|
|
getframe(levptr(XButtonPressedEvent)); |
725 |
|
|
else |
726 |
|
|
getmove(levptr(XButtonPressedEvent)); |
727 |
|
|
break; |
728 |
|
|
} |
729 |
|
|
} |
730 |
|
|
|
731 |
|
|
|
732 |
schorsch |
3.24 |
static void |
733 |
|
|
draw3dline( /* draw 3d line in world coordinates */ |
734 |
|
|
register FVECT wp[2] |
735 |
|
|
) |
736 |
gwlarson |
3.1 |
{ |
737 |
|
|
glVertex3d(wp[0][0], wp[0][1], wp[0][2]); |
738 |
|
|
glVertex3d(wp[1][0], wp[1][1], wp[1][2]); |
739 |
|
|
} |
740 |
|
|
|
741 |
|
|
|
742 |
schorsch |
3.24 |
static void |
743 |
|
|
draw_grids( /* draw holodeck section grids */ |
744 |
|
|
int fore |
745 |
|
|
) |
746 |
gwlarson |
3.1 |
{ |
747 |
|
|
glPushAttrib(GL_LIGHTING_BIT|GL_ENABLE_BIT); |
748 |
|
|
glDisable(GL_LIGHTING); |
749 |
|
|
if (fore) |
750 |
gwlarson |
3.8 |
glColor3ub(4, 250, 250); |
751 |
gwlarson |
3.1 |
else |
752 |
|
|
glColor3ub(0, 0, 0); |
753 |
|
|
glBegin(GL_LINES); /* draw each grid line */ |
754 |
|
|
gridlines(draw3dline); |
755 |
|
|
glEnd(); |
756 |
|
|
checkglerr("drawing grid lines"); |
757 |
|
|
glPopAttrib(); |
758 |
|
|
} |
759 |
|
|
|
760 |
|
|
|
761 |
schorsch |
3.24 |
static int |
762 |
|
|
moveview( /* move our view */ |
763 |
|
|
int dx, |
764 |
|
|
int dy, |
765 |
|
|
int mov, |
766 |
|
|
int orb |
767 |
|
|
) |
768 |
gwlarson |
3.1 |
{ |
769 |
|
|
VIEW nv; |
770 |
|
|
FVECT odir, v1, wip; |
771 |
schorsch |
3.30 |
double d; |
772 |
|
|
#ifdef DOBJ |
773 |
|
|
double d1; |
774 |
|
|
#endif |
775 |
gwlarson |
3.1 |
/* start with old view */ |
776 |
schorsch |
3.22 |
nv = odev.v; |
777 |
gwlarson |
3.1 |
/* orient our motion */ |
778 |
|
|
if (viewray(v1, odir, &odev.v, |
779 |
|
|
(dx+.5)/odev.hres, (dy+.5)/odev.vres) < -FTINY) |
780 |
|
|
return(0); /* outside view */ |
781 |
|
|
if (mov | orb) { /* moving relative to geometry */ |
782 |
|
|
d = getdistance(dx, dy, odir); /* distance from front plane */ |
783 |
|
|
#ifdef DOBJ |
784 |
|
|
d1 = dobj_trace(NULL, v1, odir); |
785 |
|
|
if (d1 < d) |
786 |
|
|
d = d1; |
787 |
|
|
#endif |
788 |
|
|
if (d >= .99*FHUGE) |
789 |
|
|
d = 0.5*(dev_zmax+dev_zmin); /* just guess */ |
790 |
|
|
VSUM(wip, v1, odir, d); |
791 |
|
|
VSUB(odir, wip, odev.v.vp); |
792 |
|
|
} else /* panning with constant viewpoint */ |
793 |
|
|
VCOPY(nv.vdir, odir); |
794 |
|
|
if (orb && mov) { /* orbit left/right */ |
795 |
|
|
spinvector(odir, odir, nv.vup, d=MOVDEG*PI/180.*mov); |
796 |
|
|
VSUM(nv.vp, wip, odir, -1.); |
797 |
|
|
spinvector(nv.vdir, nv.vdir, nv.vup, d); |
798 |
|
|
} else if (orb) { /* orbit up/down */ |
799 |
greg |
3.31 |
if (geodesic(odir, odir, nv.vup, |
800 |
|
|
d=MOVDEG*PI/180.*orb, GEOD_RAD) == 0.0) |
801 |
gwlarson |
3.1 |
return(0); |
802 |
|
|
VSUM(nv.vp, wip, odir, -1.); |
803 |
greg |
3.31 |
geodesic(nv.vdir, nv.vdir, nv.vup, d, GEOD_RAD); |
804 |
gwlarson |
3.1 |
} else if (mov) { /* move forward/backward */ |
805 |
|
|
d = MOVPCT/100. * mov; |
806 |
|
|
VSUM(nv.vp, nv.vp, odir, d); |
807 |
|
|
} |
808 |
gwlarson |
3.7 |
if (!mov ^ !orb && viewflags&VWHEADLOCK) { /* restore height */ |
809 |
gwlarson |
3.1 |
VSUM(v1, odev.v.vp, nv.vp, -1.); |
810 |
|
|
d = DOT(v1, nv.vup); |
811 |
|
|
VSUM(nv.vp, nv.vp, odev.v.vup, d); |
812 |
|
|
} |
813 |
|
|
if (setview(&nv) != NULL) |
814 |
|
|
return(0); /* illegal view */ |
815 |
|
|
dev_view(&nv); |
816 |
gwlarson |
3.2 |
inpresflags |= DFL(DC_SETVIEW); |
817 |
gwlarson |
3.1 |
return(1); |
818 |
|
|
} |
819 |
|
|
|
820 |
|
|
|
821 |
schorsch |
3.24 |
static void |
822 |
|
|
getframe( /* get focus frame */ |
823 |
|
|
XButtonPressedEvent *ebut |
824 |
|
|
) |
825 |
gwlarson |
3.1 |
{ |
826 |
|
|
int startx = ebut->x, starty = ebut->y; |
827 |
greg |
3.27 |
int endx, endy, midx, midy; |
828 |
|
|
FVECT odir, v1; |
829 |
schorsch |
3.30 |
double d; |
830 |
|
|
#ifdef DOBJ |
831 |
|
|
double d1; |
832 |
|
|
#endif |
833 |
greg |
3.27 |
/* get mouse drag */ |
834 |
gwlarson |
3.1 |
XMaskEvent(ourdisplay, ButtonReleaseMask, levptr(XEvent)); |
835 |
|
|
endx = levptr(XButtonReleasedEvent)->x; |
836 |
|
|
endy = levptr(XButtonReleasedEvent)->y; |
837 |
greg |
3.27 |
midx = (startx + endx) >> 1; |
838 |
|
|
midy = (starty + endy) >> 1; |
839 |
|
|
/* set focus distance */ |
840 |
|
|
if (viewray(v1, odir, &odev.v, |
841 |
|
|
(midx+.5)/odev.hres, (midy+.5)/odev.vres) < -FTINY) |
842 |
|
|
return; |
843 |
|
|
d = getdistance(midx, midy, odir); /* distance from front plane */ |
844 |
|
|
#ifdef DOBJ |
845 |
|
|
d1 = dobj_trace(NULL, v1, odir); |
846 |
|
|
if (d1 < d) |
847 |
|
|
d = d1; |
848 |
|
|
#endif |
849 |
|
|
if (d < .99*FHUGE) |
850 |
|
|
odev.v.vdist = d + sqrt(dist2(v1, odev.v.vp)); |
851 |
|
|
/* set frame for rendering */ |
852 |
|
|
if ((endx == startx) | (endy == starty)) |
853 |
gwlarson |
3.1 |
return; |
854 |
|
|
if (endx < startx) {register int c = endx; endx = startx; startx = c;} |
855 |
|
|
if (endy < starty) {register int c = endy; endy = starty; starty = c;} |
856 |
|
|
sprintf(odev_args, "%.3f %.3f %.3f %.3f", |
857 |
|
|
(startx+.5)/odev.hres, 1.-(endy+.5)/odev.vres, |
858 |
|
|
(endx+.5)/odev.hres, 1.-(starty+.5)/odev.vres); |
859 |
|
|
inpresflags |= DFL(DC_FOCUS); |
860 |
|
|
} |
861 |
|
|
|
862 |
|
|
|
863 |
schorsch |
3.24 |
static void |
864 |
|
|
waitabit(void) /* pause a moment */ |
865 |
greg |
3.19 |
{ |
866 |
|
|
struct timespec ts; |
867 |
|
|
ts.tv_sec = 0; |
868 |
greg |
3.23 |
ts.tv_nsec = 100000000L; |
869 |
greg |
3.19 |
nanosleep(&ts, NULL); |
870 |
|
|
} |
871 |
|
|
|
872 |
|
|
|
873 |
schorsch |
3.24 |
static void |
874 |
|
|
getmove( /* get view change */ |
875 |
|
|
XButtonPressedEvent *ebut |
876 |
|
|
) |
877 |
gwlarson |
3.1 |
{ |
878 |
|
|
int movdir = MOVDIR(ebut->button); |
879 |
|
|
int movorb = MOVORB(ebut->state); |
880 |
gwlarson |
3.2 |
int ndrawn; |
881 |
gwlarson |
3.1 |
Window rootw, childw; |
882 |
|
|
int rootx, rooty, wx, wy; |
883 |
|
|
unsigned int statemask; |
884 |
|
|
|
885 |
|
|
XNoOp(ourdisplay); /* makes sure we're not idle */ |
886 |
|
|
|
887 |
gwlarson |
3.7 |
viewflags &= ~VWSTEADY; /* flag moving view */ |
888 |
gwlarson |
3.11 |
setglpersp(); /* start us off in perspective */ |
889 |
gwlarson |
3.1 |
while (!XCheckMaskEvent(ourdisplay, |
890 |
|
|
ButtonReleaseMask, levptr(XEvent))) { |
891 |
greg |
3.19 |
/* pause so as not to move too fast */ |
892 |
|
|
waitabit(); |
893 |
gwlarson |
3.1 |
/* get cursor position */ |
894 |
|
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
895 |
|
|
&rootx, &rooty, &wx, &wy, &statemask)) |
896 |
|
|
break; /* on another screen */ |
897 |
|
|
/* compute view motion */ |
898 |
|
|
if (!moveview(wx, odev.vres-1-wy, movdir, movorb)) { |
899 |
|
|
sleep(1); |
900 |
|
|
continue; /* cursor in bad place */ |
901 |
|
|
} |
902 |
|
|
draw_grids(1); /* redraw grid */ |
903 |
|
|
#ifdef STEREO |
904 |
|
|
pushright(); |
905 |
|
|
draw_grids(1); |
906 |
gwlarson |
3.3 |
ndrawn = gmDrawGeom(); |
907 |
gwlarson |
3.1 |
#ifdef DOBJ |
908 |
gwlarson |
3.3 |
ndrawn += dobj_render(); |
909 |
gwlarson |
3.1 |
#endif |
910 |
|
|
popright(); |
911 |
|
|
#endif |
912 |
|
|
/* redraw octrees */ |
913 |
gwlarson |
3.3 |
ndrawn = gmDrawGeom(); |
914 |
gwlarson |
3.1 |
#ifdef DOBJ |
915 |
gwlarson |
3.2 |
ndrawn += dobj_render(); /* redraw objects */ |
916 |
gwlarson |
3.1 |
#endif |
917 |
gwlarson |
3.6 |
glXSwapBuffers(ourdisplay, gwind); |
918 |
|
|
if (!ndrawn) |
919 |
gwlarson |
3.2 |
sleep(1); /* for reasonable interaction */ |
920 |
gwlarson |
3.1 |
} |
921 |
|
|
if (!(inpresflags & DFL(DC_SETVIEW))) { /* do final motion */ |
922 |
|
|
movdir = MOVDIR(levptr(XButtonReleasedEvent)->button); |
923 |
|
|
wx = levptr(XButtonReleasedEvent)->x; |
924 |
|
|
wy = levptr(XButtonReleasedEvent)->y; |
925 |
|
|
moveview(wx, odev.vres-1-wy, movdir, movorb); |
926 |
|
|
} |
927 |
gwlarson |
3.7 |
viewflags |= VWSTEADY; /* done goofing around */ |
928 |
gwlarson |
3.1 |
} |
929 |
|
|
|
930 |
|
|
|
931 |
schorsch |
3.24 |
static void |
932 |
|
|
setglpersp(void) /* set perspective view in GL */ |
933 |
gwlarson |
3.1 |
{ |
934 |
|
|
double d, xmin, xmax, ymin, ymax; |
935 |
|
|
GLfloat vec[4]; |
936 |
|
|
double depthlim[2]; |
937 |
|
|
/* set depth limits */ |
938 |
gwlarson |
3.2 |
gmDepthLimit(depthlim, odev.v.vp, odev.v.vdir); |
939 |
gwlarson |
3.1 |
if (depthlim[0] >= depthlim[1]) { |
940 |
|
|
dev_zmin = 1.; |
941 |
|
|
dev_zmax = 100.; |
942 |
|
|
} else { |
943 |
|
|
dev_zmin = 0.5*depthlim[0]; |
944 |
gwlarson |
3.13 |
dev_zmax = 1.25*depthlim[1]; |
945 |
gwlarson |
3.1 |
if (dev_zmin > dev_zmax/5.) |
946 |
|
|
dev_zmin = dev_zmax/5.; |
947 |
|
|
} |
948 |
|
|
if (odev.v.vfore > FTINY) |
949 |
|
|
dev_zmin = odev.v.vfore; |
950 |
|
|
if (odev.v.vaft > FTINY) |
951 |
|
|
dev_zmax = odev.v.vaft; |
952 |
gwlarson |
3.18 |
if (dev_zmin*500. < dev_zmax) |
953 |
greg |
3.19 |
dev_zmin = dev_zmax/500.; |
954 |
gwlarson |
3.1 |
setzrat(); |
955 |
|
|
xmax = dev_zmin * tan(PI/180./2. * odev.v.horiz); |
956 |
|
|
xmin = -xmax; |
957 |
|
|
d = odev.v.hoff * (xmax - xmin); |
958 |
|
|
xmin += d; xmax += d; |
959 |
|
|
ymax = dev_zmin * tan(PI/180./2. * odev.v.vert); |
960 |
|
|
ymin = -ymax; |
961 |
|
|
d = odev.v.voff * (ymax - ymin); |
962 |
|
|
ymin += d; ymax += d; |
963 |
|
|
/* set view matrix */ |
964 |
|
|
glMatrixMode(GL_PROJECTION); |
965 |
|
|
glLoadIdentity(); |
966 |
|
|
glFrustum(xmin, xmax, ymin, ymax, dev_zmin, dev_zmax); |
967 |
|
|
gluLookAt(odev.v.vp[0], odev.v.vp[1], odev.v.vp[2], |
968 |
|
|
odev.v.vp[0] + odev.v.vdir[0], |
969 |
|
|
odev.v.vp[1] + odev.v.vdir[1], |
970 |
|
|
odev.v.vp[2] + odev.v.vdir[2], |
971 |
|
|
odev.v.vup[0], odev.v.vup[1], odev.v.vup[2]); |
972 |
|
|
checkglerr("setting perspective view"); |
973 |
|
|
vec[0] = vec[1] = vec[2] = 0.; vec[3] = 1.; |
974 |
|
|
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vec); |
975 |
|
|
vec[0] = -odev.v.vdir[0]; |
976 |
|
|
vec[1] = -odev.v.vdir[1]; |
977 |
|
|
vec[2] = -odev.v.vdir[2]; |
978 |
|
|
vec[3] = 0.; |
979 |
|
|
glLightfv(GL_LIGHT0, GL_POSITION, vec); |
980 |
|
|
vec[0] = vec[1] = vec[2] = .7; vec[3] = 1.; |
981 |
|
|
glLightfv(GL_LIGHT0, GL_SPECULAR, vec); |
982 |
|
|
glLightfv(GL_LIGHT0, GL_DIFFUSE, vec); |
983 |
|
|
vec[0] = vec[1] = vec[2] = .3; vec[3] = 1.; |
984 |
|
|
glLightfv(GL_LIGHT0, GL_AMBIENT, vec); |
985 |
|
|
glEnable(GL_LIGHT0); |
986 |
|
|
glEnable(GL_LIGHTING); /* light our GL objects */ |
987 |
|
|
glShadeModel(GL_SMOOTH); |
988 |
gwlarson |
3.7 |
viewflags &= ~VWORTHO; |
989 |
|
|
viewflags |= VWPERSP; |
990 |
gwlarson |
3.1 |
} |
991 |
|
|
|
992 |
|
|
|
993 |
schorsch |
3.24 |
static void |
994 |
|
|
setglortho(void) /* set up orthographic view for cone drawing */ |
995 |
gwlarson |
3.1 |
{ |
996 |
gwlarson |
3.6 |
glDrawBuffer(GL_FRONT); /* use single-buffer mode */ |
997 |
gwlarson |
3.1 |
/* set view matrix */ |
998 |
|
|
glMatrixMode(GL_PROJECTION); |
999 |
|
|
glLoadIdentity(); |
1000 |
|
|
glOrtho(0., (double)odev.hres, 0., (double)odev.vres, |
1001 |
|
|
0.001*OMAXDEPTH, 1.001*(-OMAXDEPTH)); |
1002 |
|
|
checkglerr("setting orthographic view"); |
1003 |
|
|
glDisable(GL_LIGHTING); /* cones are constant color */ |
1004 |
|
|
glShadeModel(GL_FLAT); |
1005 |
gwlarson |
3.7 |
viewflags &= ~VWPERSP; |
1006 |
|
|
viewflags |= VWORTHO; |
1007 |
gwlarson |
3.1 |
} |
1008 |
|
|
|
1009 |
|
|
|
1010 |
schorsch |
3.24 |
static void |
1011 |
|
|
wipeclean(void) /* prepare for redraw */ |
1012 |
gwlarson |
3.1 |
{ |
1013 |
gwlarson |
3.6 |
glDrawBuffer(GL_BACK); /* use double-buffer mode */ |
1014 |
gwlarson |
3.9 |
glReadBuffer(GL_BACK); |
1015 |
gwlarson |
3.6 |
/* clear buffers */ |
1016 |
gwlarson |
3.1 |
#ifdef STEREO |
1017 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
1018 |
gwlarson |
3.6 |
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
1019 |
gwlarson |
3.1 |
setstereobuf(STEREO_BUFFER_LEFT); |
1020 |
|
|
#endif |
1021 |
gwlarson |
3.6 |
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
1022 |
|
|
freedepth(); |
1023 |
gwlarson |
3.7 |
if ((viewflags&(VWCHANGE|VWSTEADY)) == |
1024 |
|
|
(VWCHANGE|VWSTEADY)) { /* clear samples if new */ |
1025 |
gwlarson |
3.1 |
odClean(); |
1026 |
gwlarson |
3.7 |
viewflags &= ~VWCHANGE; /* change noted */ |
1027 |
gwlarson |
3.10 |
} else if (viewflags & VWSTEADY) |
1028 |
|
|
odRedrawAll(); |
1029 |
gwlarson |
3.17 |
setglpersp(); /* reset view & clipping planes */ |
1030 |
gwlarson |
3.1 |
} |
1031 |
|
|
|
1032 |
|
|
|
1033 |
schorsch |
3.24 |
static void |
1034 |
|
|
getkey( /* get input key */ |
1035 |
|
|
register XKeyPressedEvent *ekey |
1036 |
|
|
) |
1037 |
gwlarson |
3.1 |
{ |
1038 |
|
|
Window rootw, childw; |
1039 |
|
|
int rootx, rooty, wx, wy; |
1040 |
|
|
unsigned int statemask; |
1041 |
|
|
int n; |
1042 |
|
|
char buf[8]; |
1043 |
|
|
|
1044 |
|
|
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
1045 |
|
|
if (n != 1) |
1046 |
|
|
return; |
1047 |
|
|
switch (buf[0]) { |
1048 |
|
|
case 'h': /* turn on height motion lock */ |
1049 |
gwlarson |
3.7 |
viewflags |= VWHEADLOCK; |
1050 |
gwlarson |
3.1 |
return; |
1051 |
|
|
case 'H': /* turn off height motion lock */ |
1052 |
gwlarson |
3.7 |
viewflags &= ~VWHEADLOCK; |
1053 |
gwlarson |
3.1 |
return; |
1054 |
|
|
case 'l': /* retrieve last view */ |
1055 |
|
|
inpresflags |= DFL(DC_LASTVIEW); |
1056 |
|
|
return; |
1057 |
|
|
case 'p': /* pause computation */ |
1058 |
|
|
inpresflags |= DFL(DC_PAUSE); |
1059 |
|
|
return; |
1060 |
|
|
case 'v': /* spit out view */ |
1061 |
|
|
inpresflags |= DFL(DC_GETVIEW); |
1062 |
|
|
return; |
1063 |
|
|
case 'f': /* frame view position */ |
1064 |
|
|
if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
1065 |
|
|
&rootx, &rooty, &wx, &wy, &statemask)) |
1066 |
|
|
return; /* on another screen */ |
1067 |
|
|
sprintf(odev_args, "%.4f %.4f", (wx+.5)/odev.hres, |
1068 |
|
|
1.-(wy+.5)/odev.vres); |
1069 |
|
|
inpresflags |= DFL(DC_FOCUS); |
1070 |
|
|
return; |
1071 |
|
|
case 'F': /* unfocus */ |
1072 |
|
|
odev_args[0] = '\0'; |
1073 |
|
|
inpresflags |= DFL(DC_FOCUS); |
1074 |
|
|
return; |
1075 |
|
|
case '\n': |
1076 |
|
|
case '\r': /* resume computation */ |
1077 |
|
|
inpresflags |= DFL(DC_RESUME); |
1078 |
|
|
return; |
1079 |
|
|
case CTRL('R'): /* redraw screen */ |
1080 |
gwlarson |
3.10 |
odRemap(0); /* new tone mapping */ |
1081 |
gwlarson |
3.6 |
glClear(GL_DEPTH_BUFFER_BIT); |
1082 |
gwlarson |
3.1 |
#ifdef STEREO |
1083 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
1084 |
gwlarson |
3.6 |
glClear(GL_DEPTH_BUFFER_BIT); |
1085 |
gwlarson |
3.1 |
setstereobuf(STEREO_BUFFER_LEFT); |
1086 |
|
|
#endif |
1087 |
|
|
return; |
1088 |
|
|
case CTRL('L'): /* refresh from server */ |
1089 |
|
|
if (inpresflags & DFL(DC_REDRAW)) |
1090 |
gwlarson |
3.12 |
return; /* already called */ |
1091 |
gwlarson |
3.1 |
XRaiseWindow(ourdisplay, gwind); |
1092 |
gwlarson |
3.11 |
XFlush(ourdisplay); /* raise up window */ |
1093 |
gwlarson |
3.10 |
sleep(1); /* wait for restacking */ |
1094 |
gwlarson |
3.11 |
dev_clear(); /* clear buffer and samples */ |
1095 |
gwlarson |
3.10 |
odRemap(1); /* start fresh histogram */ |
1096 |
gwlarson |
3.1 |
inpresflags |= DFL(DC_REDRAW); /* resend values from server */ |
1097 |
|
|
return; |
1098 |
|
|
case 'K': /* kill rtrace process(es) */ |
1099 |
|
|
inpresflags |= DFL(DC_KILL); |
1100 |
|
|
break; |
1101 |
|
|
case 'R': /* restart rtrace */ |
1102 |
|
|
inpresflags |= DFL(DC_RESTART); |
1103 |
|
|
break; |
1104 |
|
|
case 'C': /* clobber holodeck */ |
1105 |
|
|
inpresflags |= DFL(DC_CLOBBER); |
1106 |
|
|
break; |
1107 |
|
|
case 'q': /* quit the program */ |
1108 |
|
|
inpresflags |= DFL(DC_QUIT); |
1109 |
|
|
return; |
1110 |
|
|
default: |
1111 |
|
|
XBell(ourdisplay, 0); |
1112 |
|
|
return; |
1113 |
|
|
} |
1114 |
|
|
} |
1115 |
|
|
|
1116 |
|
|
|
1117 |
schorsch |
3.24 |
static void |
1118 |
|
|
fixwindow( /* repair damage to window */ |
1119 |
|
|
register XExposeEvent *eexp |
1120 |
|
|
) |
1121 |
gwlarson |
3.1 |
{ |
1122 |
|
|
int xmin, ymin, xmax, ymax; |
1123 |
|
|
|
1124 |
schorsch |
3.24 |
if ((odev.hres == 0) | (odev.vres == 0)) { /* first exposure */ |
1125 |
gwlarson |
3.1 |
resizewindow((XConfigureEvent *)eexp); |
1126 |
|
|
return; |
1127 |
|
|
} |
1128 |
|
|
xmin = eexp->x; xmax = eexp->x + eexp->width; |
1129 |
|
|
ymin = odev.vres - eexp->y - eexp->height; ymax = odev.vres - eexp->y; |
1130 |
gwlarson |
3.10 |
|
1131 |
|
|
if (xmin <= 0 && xmax >= odev.hres-1 && |
1132 |
|
|
ymin <= 0 && ymax >= odev.vres) { |
1133 |
|
|
DCHECK(eexp->count, WARNING, "multiple clear in fixwindow"); |
1134 |
gwlarson |
3.11 |
wipeclean(); /* make sure we're go */ |
1135 |
gwlarson |
3.10 |
return; |
1136 |
|
|
} |
1137 |
gwlarson |
3.1 |
/* clear portion of depth */ |
1138 |
gwlarson |
3.2 |
glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); |
1139 |
gwlarson |
3.1 |
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
1140 |
|
|
glDepthFunc(GL_ALWAYS); |
1141 |
|
|
glBegin(GL_POLYGON); |
1142 |
|
|
glVertex3i(xmin, ymin, OMAXDEPTH); |
1143 |
|
|
glVertex3i(xmax, ymin, OMAXDEPTH); |
1144 |
|
|
glVertex3i(xmax, ymax, OMAXDEPTH); |
1145 |
|
|
glVertex3i(xmin, ymax, OMAXDEPTH); |
1146 |
|
|
glEnd(); |
1147 |
|
|
#ifdef STEREO |
1148 |
|
|
setstereobuf(STEREO_BUFFER_RIGHT); |
1149 |
|
|
glBegin(GL_POLYGON); |
1150 |
|
|
glVertex3i(xmin, ymin, OMAXDEPTH); |
1151 |
|
|
glVertex3i(xmax, ymin, OMAXDEPTH); |
1152 |
|
|
glVertex3i(xmax, ymax, OMAXDEPTH); |
1153 |
|
|
glVertex3i(xmin, ymax, OMAXDEPTH); |
1154 |
|
|
glEnd(); |
1155 |
|
|
odRedraw(1, xmin, ymin, xmax, ymax); |
1156 |
|
|
setstereobuf(STEREO_BUFFER_LEFT); |
1157 |
|
|
#endif |
1158 |
gwlarson |
3.2 |
glPopAttrib(); |
1159 |
gwlarson |
3.1 |
odRedraw(0, xmin, ymin, xmax, ymax); |
1160 |
|
|
} |
1161 |
|
|
|
1162 |
|
|
|
1163 |
schorsch |
3.24 |
static void |
1164 |
|
|
resizewindow( /* resize window */ |
1165 |
|
|
register XConfigureEvent *ersz |
1166 |
|
|
) |
1167 |
gwlarson |
3.1 |
{ |
1168 |
|
|
glViewport(0, 0, ersz->width, ersz->height); |
1169 |
|
|
|
1170 |
|
|
if (ersz->width == odev.hres && ersz->height == odev.vres) |
1171 |
|
|
return; |
1172 |
|
|
|
1173 |
|
|
odev.hres = ersz->width; |
1174 |
|
|
odev.vres = ersz->height; |
1175 |
|
|
|
1176 |
|
|
odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres); |
1177 |
|
|
odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres); |
1178 |
|
|
|
1179 |
gwlarson |
3.2 |
inpresflags |= DFL(DC_SETVIEW); |
1180 |
gwlarson |
3.7 |
viewflags |= VWCHANGE; |
1181 |
gwlarson |
3.1 |
} |