1 /* atlantis --- Shows moving 3D sea animals */
3 #if !defined( lint ) && !defined( SABER )
4 static const char sccsid[] = "@(#)atlantis.c 1.3 98/06/18 xlockmore";
8 /* Copyright (c) E. Lassauge, 1998. */
11 * Permission to use, copy, modify, and distribute this software and its
12 * documentation for any purpose and without fee is hereby granted,
13 * provided that the above copyright notice appear in all copies and that
14 * both that copyright notice and this permission notice appear in
15 * supporting documentation.
17 * This file is provided AS IS with no warranties of any kind. The author
18 * shall have no liability with respect to the infringement of copyrights,
19 * trade secrets or any patents by this file or any part thereof. In no
20 * event will the author be liable for any lost revenue or profits or
21 * other special, indirect and consequential damages.
23 * The original code for this mode was written by Mark J. Kilgard
24 * as a demo for openGL programming.
26 * Porting it to xlock was possible by comparing the original Mesa's morph3d
27 * demo with it's ported version to xlock, so thanks for Marcelo F. Vianna
28 * (look at morph3d.c) for his indirect help.
30 * Thanks goes also to Brian Paul for making it possible and inexpensive
31 * to use OpenGL at home.
33 * My e-mail address is lassauge@sagem.fr
35 * Eric Lassauge (May-13-1998)
39 * Jamie Zawinski, 2-Apr-01: - The fishies were inside out! The back faces
40 * were being drawn, not the front faces.
41 * - Added a texture to simulate light from the
42 * surface, like in the SGI version.
44 * David A. Bagley - 98/06/17 : Add whalespeed option. Global options to
45 * initialize local variables are now:
46 * XLock.atlantis.cycles: 100 ! SharkSpeed
47 * XLock.atlantis.batchcount: 4 ! SharkNum
48 * XLock.atlantis.whalespeed: 250 ! WhaleSpeed
49 * XLock.atlantis.size: 6000 ! SharkSize
50 * Add random direction for whales/dolphins
52 * E.Lassauge - 98/06/16: Use the following global options to initialize
54 * XLock.atlantis.delay: 100 ! SharkSpeed
55 * XLock.atlantis.batchcount: 4 ! SharkNum
56 * XLock.atlantis.cycles: 250 ! WhaleSpeed
57 * XLock.atlantis.size: 6000 ! SharkSize
58 * Add support for -/+ wireframe (t'was so easy to do!)
61 * - add a sort of background image or random bg color
62 * - better handling of sizes and speeds
63 * - test standalone and module modes
67 /* Copyright (c) Mark J. Kilgard, 1994. */
70 * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
72 * Permission to use, copy, modify, and distribute this software for
73 * any purpose and without fee is hereby granted, provided that the above
74 * copyright notice appear in all copies and that both the copyright notice
75 * and this permission notice appear in supporting documentation, and that
76 * the name of Silicon Graphics, Inc. not be used in advertising
77 * or publicity pertaining to distribution of the software without specific,
78 * written prior permission.
80 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
81 * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
82 * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
83 * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
84 * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
85 * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
86 * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
87 * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
88 * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
89 * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
90 * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
91 * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
93 * US Government Users Restricted Rights
94 * Use, duplication, or disclosure by the Government is subject to
95 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
96 * (c)(1)(ii) of the Rights in Technical Data and Computer Software
97 * clause at DFARS 252.227-7013 and/or in similar or successor
98 * clauses in the FAR or the DOD or NASA FAR Supplement.
99 * Unpublished-- rights reserved under the copyright laws of the
100 * United States. Contractor/manufacturer is Silicon Graphics,
101 * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
103 * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
107 # define PROGCLASS "Atlantis"
108 # define HACK_INIT init_atlantis
109 # define HACK_DRAW draw_atlantis
110 # define HACK_RESHAPE reshape_atlantis
111 # define atlantis_opts xlockmore_opts
112 # define DEFAULTS "*delay: 40000 \n" \
114 "*showFPS: False \n" \
117 "*wireframe: False \n" \
118 "*whalespeed: 250 \n"
119 # include "xlockmore.h" /* from the xscreensaver distribution */
120 #else /* !STANDALONE */
121 # include "xlock.h" /* from the xlockmore distribution */
123 #endif /* !STANDALONE */
127 #include "atlantis.h"
131 #define DEF_TEXTURE "True"
133 #define DEF_WHALESPEED "250"
134 static int whalespeed;
135 static int do_texture;
136 static XrmOptionDescRec opts[] =
138 {"-whalespeed", ".atlantis.whalespeed", XrmoptionSepArg, (caddr_t) NULL},
139 {"-texture", ".atlantis.texture", XrmoptionNoArg, (caddr_t)"true"},
140 {"+texture", ".atlantis.texture", XrmoptionNoArg, (caddr_t)"false"},
143 static argtype vars[] =
145 {(caddr_t *) & whalespeed, "whalespeed", "WhaleSpeed", DEF_WHALESPEED, t_Int},
146 {(caddr_t *) &do_texture, "texture", "Texture", DEF_TEXTURE, t_Bool},
149 static OptionStruct desc[] =
151 {"-whalespeed num", "speed of whales and the dolphin"},
152 {"-texture num", "whether to introduce water-like distortion"}
155 ModeSpecOpt atlantis_opts =
156 {sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
159 ModStruct atlantis_description =
160 {"atlantis", "init_atlantis", "draw_atlantis", "release_atlantis",
161 "refresh_atlantis", "change_atlantis", NULL, &atlantis_opts,
162 1000, NUM_SHARKS, SHARKSPEED, SHARKSIZE, 64, 1.0, "",
163 "Shows moving sharks/whales/dolphin", 0, NULL};
167 static atlantisstruct *atlantis = NULL;
169 #include "xpm-ximage.h"
170 #include "../images/sea-texture.xpm"
173 parse_image_data(ModeInfo *mi)
175 atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
176 ap->texture = xpm_to_ximage (mi->dpy,
183 InitFishs(atlantisstruct * ap)
187 for (i = 0; i < ap->num_sharks; i++) {
188 ap->sharks[i].x = 70000.0 + NRAND(ap->sharksize);
189 ap->sharks[i].y = NRAND(ap->sharksize);
190 ap->sharks[i].z = NRAND(ap->sharksize);
191 ap->sharks[i].psi = NRAND(360) - 180.0;
192 ap->sharks[i].v = 1.0;
195 /* Random whae direction */
196 ap->whaledir = LRAND() & 1;
198 ap->dolph.x = 30000.0;
200 ap->dolph.z = (float) (ap->sharksize);
201 ap->dolph.psi = (ap->whaledir) ? 90.0 : -90.0;
202 ap->dolph.theta = 0.0;
205 ap->momWhale.x = 70000.0;
206 ap->momWhale.y = 0.0;
207 ap->momWhale.z = 0.0;
208 ap->momWhale.psi = (ap->whaledir) ? 90.0 : -90.0;
209 ap->momWhale.theta = 0.0;
210 ap->momWhale.v = 3.0;
212 ap->babyWhale.x = 60000.0;
213 ap->babyWhale.y = -2000.0;
214 ap->babyWhale.z = -2000.0;
215 ap->babyWhale.psi = (ap->whaledir) ? 90.0 : -90.0;
216 ap->babyWhale.theta = 0.0;
217 ap->babyWhale.v = 3.0;
223 atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
225 static float ambient[] =
226 {0.1, 0.1, 0.1, 1.0};
227 static float diffuse[] =
228 {1.0, 1.0, 1.0, 1.0};
229 static float position[] =
230 {0.0, 1.0, 0.0, 0.0};
231 static float mat_shininess[] =
233 static float mat_specular[] =
234 {0.8, 0.8, 0.8, 1.0};
235 static float mat_diffuse[] =
236 {0.46, 0.66, 0.795, 1.0};
237 static float mat_ambient[] =
238 {0.0, 0.1, 0.2, 1.0};
239 static float lmodel_ambient[] =
240 {0.4, 0.4, 0.4, 1.0};
241 static float lmodel_localviewer[] =
243 float fblue = 0.0, fgreen;
249 glDisable(GL_DEPTH_TEST);
250 glDisable(GL_CULL_FACE);
251 glDisable(GL_LIGHTING);
252 glDisable(GL_NORMALIZE);
256 glDepthFunc(GL_LEQUAL);
257 glEnable(GL_DEPTH_TEST);
258 glEnable(GL_CULL_FACE);
259 glEnable(GL_NORMALIZE);
260 glShadeModel(GL_SMOOTH);
262 glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
263 glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
264 glLightfv(GL_LIGHT0, GL_POSITION, position);
265 glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
266 glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, lmodel_localviewer);
267 glEnable(GL_LIGHTING);
270 glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
271 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
272 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
273 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
276 if (ap->wire || !do_texture)
278 glDisable(GL_TEXTURE_2D);
282 GLfloat s_plane[] = { 1, 0, 0, 0 };
283 GLfloat t_plane[] = { 0, 0, 1, 0 };
284 GLfloat scale = 0.0005;
287 parse_image_data (mi);
290 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
291 ap->texture->width, ap->texture->height, 0,
292 GL_RGBA, GL_UNSIGNED_BYTE,
294 check_gl_error("texture");
296 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
297 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
298 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
299 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
301 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
303 glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
304 glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
305 glTexGenfv(GL_S, GL_EYE_PLANE, s_plane);
306 glTexGenfv(GL_T, GL_EYE_PLANE, t_plane);
308 glEnable(GL_TEXTURE_GEN_S);
309 glEnable(GL_TEXTURE_GEN_T);
310 glEnable(GL_TEXTURE_2D);
312 glMatrixMode(GL_TEXTURE);
314 glScalef(scale, scale, 1);
315 glMatrixMode(GL_MODELVIEW);
320 /* Add a little randomness */
321 fblue = ((float) (NRAND(50)) / 100.0) + 0.50;
322 fgreen = fblue * 0.56;
323 glClearColor(0.0, fgreen, fblue, 0.0);
327 reshape_atlantis(ModeInfo * mi, int width, int height)
329 atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
331 glViewport(0, 0, ap->WinW = (GLint) width, ap->WinH = (GLint) height);
333 glMatrixMode(GL_PROJECTION);
335 gluPerspective(400.0, (GLdouble) width / (GLdouble) height, 1.0, 2000000.0);
336 glMatrixMode(GL_MODELVIEW);
340 Animate(atlantisstruct * ap)
344 for (i = 0; i < ap->num_sharks; i++) {
345 SharkPilot(&(ap->sharks[i]), ap->sharkspeed);
348 WhalePilot(&(ap->dolph), ap->whalespeed, ap->whaledir);
350 WhalePilot(&(ap->momWhale), ap->whalespeed, ap->whaledir);
352 WhalePilot(&(ap->babyWhale), ap->whalespeed, ap->whaledir);
357 AllDisplay(atlantisstruct * ap)
361 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
363 for (i = 0; i < ap->num_sharks; i++) {
365 FishTransform(&(ap->sharks[i]));
366 DrawShark(&(ap->sharks[i]), ap->wire);
371 FishTransform(&(ap->dolph));
372 DrawDolphin(&(ap->dolph), ap->wire);
376 FishTransform(&(ap->momWhale));
377 DrawWhale(&(ap->momWhale), ap->wire);
381 FishTransform(&(ap->babyWhale));
382 glScalef(0.45, 0.45, 0.3);
383 DrawWhale(&(ap->babyWhale), ap->wire);
388 *-----------------------------------------------------------------------------
389 *-----------------------------------------------------------------------------
391 *-----------------------------------------------------------------------------
392 *-----------------------------------------------------------------------------
396 *-----------------------------------------------------------------------------
397 * Initialize atlantis. Called each time the window changes.
398 *-----------------------------------------------------------------------------
402 init_atlantis(ModeInfo * mi)
404 int screen = MI_SCREEN(mi);
406 Display *display = MI_DISPLAY(mi);
407 Window window = MI_WINDOW(mi);
409 if (atlantis == NULL) {
410 if ((atlantis = (atlantisstruct *) calloc(MI_NUM_SCREENS(mi),
411 sizeof (atlantisstruct))) == NULL)
414 ap = &atlantis[screen];
415 ap->num_sharks = MI_COUNT(mi);
416 if (ap->sharks == NULL) {
417 if ((ap->sharks = (fishRec *) calloc(ap->num_sharks,
418 sizeof (fishRec))) == NULL) {
419 /* free everything up to now */
420 (void) free((void *) atlantis);
425 ap->sharkspeed = MI_CYCLES(mi); /* has influence on the "width"
427 ap->sharksize = MI_SIZE(mi); /* has influence on the "distance"
429 ap->whalespeed = whalespeed;
430 ap->wire = MI_IS_WIREFRAME(mi);
432 if (MI_IS_DEBUG(mi)) {
433 (void) fprintf(stderr,
434 "%s:\n\tnum_sharks=%d\n\tsharkspeed=%.1f\n\tsharksize=%d\n\twhalespeed=%.1f\n\twireframe=%s\n",
440 ap->wire ? "yes" : "no"
443 if ((ap->glx_context = init_GL(mi)) != NULL) {
445 reshape_atlantis(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
446 glDrawBuffer(GL_BACK);
449 glXSwapBuffers(display, window);
457 *-----------------------------------------------------------------------------
458 * Called by the mainline code periodically to update the display.
459 *-----------------------------------------------------------------------------
462 draw_atlantis(ModeInfo * mi)
464 atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
466 Display *display = MI_DISPLAY(mi);
467 Window window = MI_WINDOW(mi);
469 MI_IS_DRAWN(mi) = True;
471 if (!ap->glx_context)
474 glXMakeCurrent(display, window, *(ap->glx_context));
476 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
481 if (mi->fps_p) do_fps (mi);
482 glXSwapBuffers(display, window);
487 *-----------------------------------------------------------------------------
488 * The display is being taken away from us. Free up malloc'ed
489 * memory and X resources that we've alloc'ed. Only called
490 * once, we must zap everything for every screen.
491 *-----------------------------------------------------------------------------
495 release_atlantis(ModeInfo * mi)
499 if (atlantis != NULL) {
500 for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
501 atlantisstruct *ap = &atlantis[screen];
504 (void) free((void *) ap->sharks);
506 (void) free((void *) atlantis);
513 refresh_atlantis(ModeInfo * mi)
518 change_atlantis(ModeInfo * mi)
520 atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
522 if (!ap->glx_context)
525 glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(ap->glx_context));