1 /* cubestorm, Copyright (c) 2003-2008 Jamie Zawinski <jwz@jwz.org>
3 * Permission to use, copy, modify, distribute, and sell this software and its
4 * documentation for any purpose is hereby granted without fee, provided that
5 * the above copyright notice appear in all copies and that both that
6 * copyright notice and this permission notice appear in supporting
7 * documentation. No representations are made about the suitability of this
8 * software for any purpose. It is provided "as is" without express or
12 #define DEFAULTS "*delay: 30000 \n" \
13 "*count: " DEF_COUNT "\n" \
14 "*showFPS: False \n" \
15 "*fpsSolid: True \n" \
16 "*wireframe: False \n" \
19 # define refresh_cube 0
20 # define release_cube 0
22 #define countof(x) (sizeof((x))/sizeof((*x)))
24 #include "xlockmore.h"
27 #include "gltrackball.h"
30 #ifdef USE_GL /* whole file */
32 #define DEF_SPIN "True"
33 #define DEF_WANDER "True"
34 #define DEF_SPEED "1.0"
35 #define DEF_THICKNESS "0.06"
37 #define DEF_DBUF "False"
45 GLXContext *glx_context;
46 trackball_state *trackball;
59 static cube_configuration *bps = NULL;
62 static Bool do_wander;
64 static GLfloat thickness;
67 static XrmOptionDescRec opts[] = {
68 { "-spin", ".spin", XrmoptionNoArg, "True" },
69 { "+spin", ".spin", XrmoptionNoArg, "False" },
70 { "-wander", ".wander", XrmoptionNoArg, "True" },
71 { "+wander", ".wander", XrmoptionNoArg, "False" },
72 { "-speed", ".speed", XrmoptionSepArg, 0 },
73 { "-db", ".doubleBuffer", XrmoptionNoArg, "True"},
74 { "+db", ".doubleBuffer", XrmoptionNoArg, "False"},
75 { "-thickness", ".thickness", XrmoptionSepArg, 0 },
78 static argtype vars[] = {
79 {&do_spin, "spin", "Spin", DEF_SPIN, t_Bool},
80 {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
81 {&speed, "speed", "Speed", DEF_SPEED, t_Float},
82 {&thickness, "thickness", "Thickness", DEF_THICKNESS, t_Float},
83 {&dbuf_p, "doubleBuffer", "DoubleBuffer", DEF_DBUF, t_Bool},
86 ENTRYPOINT ModeSpecOpt cube_opts = {countof(opts), opts, countof(vars), vars, NULL};
90 draw_face (ModeInfo *mi)
92 int wire = MI_IS_WIREFRAME(mi);
95 GLfloat t = thickness / 2;
99 if (t <= 0) t = 0.001;
100 else if (t > 0.5) t = 0.5;
105 for (i = 0; i < 4; i++)
107 glNormal3f (0, 0, -1);
108 glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
109 glVertex3f (a, a, a);
110 glVertex3f (b, a, a);
111 glVertex3f (b-t, a+t, a);
112 glVertex3f (a+t, a+t, a);
115 glNormal3f (0, 1, 0);
116 glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
117 glVertex3f (b-t, a+t, a);
118 glVertex3f (b-t, a+t, a+t);
119 glVertex3f (a+t, a+t, a+t);
120 glVertex3f (a+t, a+t, a);
123 glRotatef(90, 0, 0, 1);
129 draw_faces (ModeInfo *mi)
133 glRotatef (90, 0, 1, 0); draw_face (mi);
134 glRotatef (90, 0, 1, 0); draw_face (mi);
135 glRotatef (90, 0, 1, 0); draw_face (mi);
136 glRotatef (90, 1, 0, 0); draw_face (mi);
137 glRotatef (180, 1, 0, 0); draw_face (mi);
143 new_cube_colors (ModeInfo *mi)
145 cube_configuration *bp = &bps[MI_SCREEN(mi)];
148 if (bp->colors) free (bp->colors);
149 bp->colors = (XColor *) calloc(bp->ncolors, sizeof(XColor));
150 make_smooth_colormap (0, 0, 0,
151 bp->colors, &bp->ncolors,
153 for (i = 0; i < MI_COUNT(mi); i++)
154 bp->subcubes[i].ccolor = random() % bp->ncolors;
158 /* Window management, etc
161 reshape_cube (ModeInfo *mi, int width, int height)
163 GLfloat h = (GLfloat) height / (GLfloat) width;
165 glViewport (0, 0, (GLint) width, (GLint) height);
167 glMatrixMode(GL_PROJECTION);
169 gluPerspective (30.0, 1/h, 1.0, 100.0);
171 glMatrixMode(GL_MODELVIEW);
173 gluLookAt( 0.0, 0.0, 45.0,
177 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
182 cube_handle_event (ModeInfo *mi, XEvent *event)
184 cube_configuration *bp = &bps[MI_SCREEN(mi)];
186 if (event->xany.type == ButtonPress &&
187 event->xbutton.button == Button1)
189 bp->button_down_p = True;
190 gltrackball_start (bp->trackball,
191 event->xbutton.x, event->xbutton.y,
192 MI_WIDTH (mi), MI_HEIGHT (mi));
195 else if (event->xany.type == ButtonRelease &&
196 event->xbutton.button == Button1)
198 bp->button_down_p = False;
201 else if (event->xany.type == ButtonPress &&
202 (event->xbutton.button == Button4 ||
203 event->xbutton.button == Button5 ||
204 event->xbutton.button == Button6 ||
205 event->xbutton.button == Button7))
207 gltrackball_mousewheel (bp->trackball, event->xbutton.button, 10,
208 !!event->xbutton.state);
211 else if (event->xany.type == MotionNotify &&
214 gltrackball_track (bp->trackball,
215 event->xmotion.x, event->xmotion.y,
216 MI_WIDTH (mi), MI_HEIGHT (mi));
219 else if (event->xany.type == KeyPress)
223 XLookupString (&event->xkey, &c, 1, &keysym, 0);
226 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
229 else if (c == '\r' || c == '\n')
231 new_cube_colors (mi);
240 init_cube (ModeInfo *mi)
242 cube_configuration *bp;
243 int wire = MI_IS_WIREFRAME(mi);
247 bps = (cube_configuration *)
248 calloc (MI_NUM_SCREENS(mi), sizeof (cube_configuration));
250 fprintf(stderr, "%s: out of memory\n", progname);
255 bp = &bps[MI_SCREEN(mi)];
257 bp->glx_context = init_GL(mi);
259 if (MI_COUNT(mi) <= 0) MI_COUNT(mi) = 1;
261 bp->trackball = gltrackball_init ();
262 bp->subcubes = (subcube *) calloc (MI_COUNT(mi), sizeof(subcube));
263 for (i = 0; i < MI_COUNT(mi); i++)
265 double wander_speed, spin_speed, spin_accel;
269 wander_speed = 0.05 * speed;
270 spin_speed = 10.0 * speed;
271 spin_accel = 4.0 * speed;
276 spin_speed = 4.0 * speed;
277 spin_accel = 2.0 * speed;
280 bp->subcubes[i].rot = make_rotator (do_spin ? spin_speed : 0,
281 do_spin ? spin_speed : 0,
282 do_spin ? spin_speed : 0,
284 do_wander ? wander_speed : 0,
289 new_cube_colors (mi);
291 reshape_cube (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
295 GLfloat pos[4] = {1.0, 1.0, 1.0, 0.0};
296 GLfloat amb[4] = {0.0, 0.0, 0.0, 1.0};
297 GLfloat dif[4] = {1.0, 1.0, 1.0, 1.0};
298 GLfloat spc[4] = {0.0, 1.0, 1.0, 1.0};
300 glEnable(GL_LIGHTING);
302 glEnable(GL_DEPTH_TEST);
303 glEnable(GL_CULL_FACE);
305 glLightfv(GL_LIGHT0, GL_POSITION, pos);
306 glLightfv(GL_LIGHT0, GL_AMBIENT, amb);
307 glLightfv(GL_LIGHT0, GL_DIFFUSE, dif);
308 glLightfv(GL_LIGHT0, GL_SPECULAR, spc);
311 bp->cube_list = glGenLists (1);
312 glNewList (bp->cube_list, GL_COMPILE);
316 glDrawBuffer(dbuf_p ? GL_BACK : GL_FRONT);
317 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
322 draw_cube (ModeInfo *mi)
324 cube_configuration *bp = &bps[MI_SCREEN(mi)];
325 Display *dpy = MI_DISPLAY(mi);
326 Window window = MI_WINDOW(mi);
327 int wire = MI_IS_WIREFRAME(mi);
331 if (!bp->glx_context)
334 glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(bp->glx_context));
336 glShadeModel(GL_SMOOTH);
338 glEnable(GL_DEPTH_TEST);
339 glEnable(GL_NORMALIZE);
340 glEnable(GL_CULL_FACE);
342 if (bp->clear_p) /* we're in "no vapor trails" mode */
344 glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
345 if (! (random() % (int) (25 / speed)))
350 if (! (random() % (int) (200 / speed)))
353 new_cube_colors (mi);
359 glScalef(1.1, 1.1, 1.1);
361 mi->polygon_count = 0;
363 get_position (bp->subcubes[0].rot, &x, &y, &z, !bp->button_down_p);
364 glTranslatef((x - 0.5) * 15,
367 gltrackball_rotate (bp->trackball);
369 glScalef (4.0, 4.0, 4.0);
371 for (i = 0; i < MI_COUNT(mi); i++)
373 GLfloat bcolor[4] = {0.0, 0.0, 0.0, 1.0};
374 GLfloat bspec[4] = {1.0, 1.0, 1.0, 1.0};
375 GLfloat bshiny = 128.0;
379 if (i != 0) /* N+1 cubes rotate relative to cube 0 */
381 get_rotation (bp->subcubes[0].rot, &x, &y, &z, False);
382 glRotatef (x * 360, 1.0, 0.0, 0.0);
383 glRotatef (y * 360, 0.0, 1.0, 0.0);
384 glRotatef (z * 360, 0.0, 0.0, 1.0);
387 get_rotation (bp->subcubes[i].rot, &x, &y, &z, !bp->button_down_p);
388 glRotatef (x * 360, 1.0, 0.0, 0.0);
389 glRotatef (y * 360, 0.0, 1.0, 0.0);
390 glRotatef (z * 360, 0.0, 0.0, 1.0);
392 bcolor[0] = bp->colors[bp->subcubes[i].ccolor].red / 65536.0;
393 bcolor[1] = bp->colors[bp->subcubes[i].ccolor].green / 65536.0;
394 bcolor[2] = bp->colors[bp->subcubes[i].ccolor].blue / 65536.0;
395 bp->subcubes[i].ccolor++;
396 if (bp->subcubes[i].ccolor >= bp->ncolors)
397 bp->subcubes[i].ccolor = 0;
400 glColor3f (bcolor[0], bcolor[1], bcolor[2]);
403 glMaterialfv (GL_FRONT, GL_SPECULAR, bspec);
404 glMateriali (GL_FRONT, GL_SHININESS, bshiny);
405 glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, bcolor);
408 glCallList (bp->cube_list);
409 mi->polygon_count += (4 * 2 * 6);
416 if (mi->fps_p) do_fps (mi);
420 glXSwapBuffers(dpy, window);
423 XSCREENSAVER_MODULE_2 ("CubeStorm", cubestorm, cube)