1 /* cubestorm, Copyright (c) 2003, 2004 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"
44 GLXContext *glx_context;
45 trackball_state *trackball;
58 static cube_configuration *bps = NULL;
61 static Bool do_wander;
63 static GLfloat thickness;
65 static XrmOptionDescRec opts[] = {
66 { "-spin", ".spin", XrmoptionNoArg, "True" },
67 { "+spin", ".spin", XrmoptionNoArg, "False" },
68 { "-wander", ".wander", XrmoptionNoArg, "True" },
69 { "+wander", ".wander", XrmoptionNoArg, "False" },
70 { "-speed", ".speed", XrmoptionSepArg, 0 },
71 { "-thickness", ".thickness", XrmoptionSepArg, 0 },
74 static argtype vars[] = {
75 {&do_spin, "spin", "Spin", DEF_SPIN, t_Bool},
76 {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
77 {&speed, "speed", "Speed", DEF_SPEED, t_Float},
78 {&thickness, "thickness", "Thickness", DEF_THICKNESS, t_Float},
81 ENTRYPOINT ModeSpecOpt cube_opts = {countof(opts), opts, countof(vars), vars, NULL};
85 draw_face (ModeInfo *mi)
87 int wire = MI_IS_WIREFRAME(mi);
90 GLfloat t = thickness / 2;
94 if (t <= 0) t = 0.001;
95 else if (t > 0.5) t = 0.5;
100 for (i = 0; i < 4; i++)
102 glNormal3f (0, 0, -1);
103 glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
104 glVertex3f (a, a, a);
105 glVertex3f (b, a, a);
106 glVertex3f (b-t, a+t, a);
107 glVertex3f (a+t, a+t, a);
110 glNormal3f (0, 1, 0);
111 glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
112 glVertex3f (b-t, a+t, a);
113 glVertex3f (b-t, a+t, a+t);
114 glVertex3f (a+t, a+t, a+t);
115 glVertex3f (a+t, a+t, a);
118 glRotatef(90, 0, 0, 1);
124 draw_faces (ModeInfo *mi)
128 glRotatef (90, 0, 1, 0); draw_face (mi);
129 glRotatef (90, 0, 1, 0); draw_face (mi);
130 glRotatef (90, 0, 1, 0); draw_face (mi);
131 glRotatef (90, 1, 0, 0); draw_face (mi);
132 glRotatef (180, 1, 0, 0); draw_face (mi);
138 new_cube_colors (ModeInfo *mi)
140 cube_configuration *bp = &bps[MI_SCREEN(mi)];
143 if (bp->colors) free (bp->colors);
144 bp->colors = (XColor *) calloc(bp->ncolors, sizeof(XColor));
145 make_smooth_colormap (0, 0, 0,
146 bp->colors, &bp->ncolors,
148 for (i = 0; i < MI_COUNT(mi); i++)
149 bp->subcubes[i].ccolor = random() % bp->ncolors;
153 /* Window management, etc
156 reshape_cube (ModeInfo *mi, int width, int height)
158 GLfloat h = (GLfloat) height / (GLfloat) width;
160 glViewport (0, 0, (GLint) width, (GLint) height);
162 glMatrixMode(GL_PROJECTION);
164 gluPerspective (30.0, 1/h, 1.0, 100.0);
166 glMatrixMode(GL_MODELVIEW);
168 gluLookAt( 0.0, 0.0, 45.0,
172 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
177 cube_handle_event (ModeInfo *mi, XEvent *event)
179 cube_configuration *bp = &bps[MI_SCREEN(mi)];
181 if (event->xany.type == ButtonPress &&
182 event->xbutton.button == Button1)
184 bp->button_down_p = True;
185 gltrackball_start (bp->trackball,
186 event->xbutton.x, event->xbutton.y,
187 MI_WIDTH (mi), MI_HEIGHT (mi));
190 else if (event->xany.type == ButtonRelease &&
191 event->xbutton.button == Button1)
193 bp->button_down_p = False;
196 else if (event->xany.type == ButtonPress &&
197 (event->xbutton.button == Button4 ||
198 event->xbutton.button == Button5))
200 gltrackball_mousewheel (bp->trackball, event->xbutton.button, 10,
201 !!event->xbutton.state);
204 else if (event->xany.type == MotionNotify &&
207 gltrackball_track (bp->trackball,
208 event->xmotion.x, event->xmotion.y,
209 MI_WIDTH (mi), MI_HEIGHT (mi));
212 else if (event->xany.type == KeyPress)
216 XLookupString (&event->xkey, &c, 1, &keysym, 0);
219 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
222 else if (c == '\r' || c == '\n')
224 new_cube_colors (mi);
233 init_cube (ModeInfo *mi)
235 cube_configuration *bp;
236 int wire = MI_IS_WIREFRAME(mi);
240 bps = (cube_configuration *)
241 calloc (MI_NUM_SCREENS(mi), sizeof (cube_configuration));
243 fprintf(stderr, "%s: out of memory\n", progname);
247 bp = &bps[MI_SCREEN(mi)];
250 bp = &bps[MI_SCREEN(mi)];
252 bp->glx_context = init_GL(mi);
254 if (MI_COUNT(mi) <= 0) MI_COUNT(mi) = 1;
256 bp->trackball = gltrackball_init ();
257 bp->subcubes = (subcube *) calloc (MI_COUNT(mi), sizeof(subcube));
258 for (i = 0; i < MI_COUNT(mi); i++)
260 double wander_speed, spin_speed, spin_accel;
264 wander_speed = 0.05 * speed;
265 spin_speed = 10.0 * speed;
266 spin_accel = 4.0 * speed;
271 spin_speed = 4.0 * speed;
272 spin_accel = 2.0 * speed;
275 bp->subcubes[i].rot = make_rotator (do_spin ? spin_speed : 0,
276 do_spin ? spin_speed : 0,
277 do_spin ? spin_speed : 0,
279 do_wander ? wander_speed : 0,
284 new_cube_colors (mi);
286 reshape_cube (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
290 GLfloat pos[4] = {1.0, 1.0, 1.0, 0.0};
291 GLfloat amb[4] = {0.0, 0.0, 0.0, 1.0};
292 GLfloat dif[4] = {1.0, 1.0, 1.0, 1.0};
293 GLfloat spc[4] = {0.0, 1.0, 1.0, 1.0};
295 glEnable(GL_LIGHTING);
297 glEnable(GL_DEPTH_TEST);
298 glEnable(GL_CULL_FACE);
300 glLightfv(GL_LIGHT0, GL_POSITION, pos);
301 glLightfv(GL_LIGHT0, GL_AMBIENT, amb);
302 glLightfv(GL_LIGHT0, GL_DIFFUSE, dif);
303 glLightfv(GL_LIGHT0, GL_SPECULAR, spc);
306 bp->cube_list = glGenLists (1);
307 glNewList (bp->cube_list, GL_COMPILE);
311 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
316 draw_cube (ModeInfo *mi)
318 cube_configuration *bp = &bps[MI_SCREEN(mi)];
319 Display *dpy = MI_DISPLAY(mi);
320 Window window = MI_WINDOW(mi);
321 int wire = MI_IS_WIREFRAME(mi);
325 if (!bp->glx_context)
328 glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(bp->glx_context));
330 glShadeModel(GL_SMOOTH);
332 glEnable(GL_DEPTH_TEST);
333 glEnable(GL_NORMALIZE);
334 glEnable(GL_CULL_FACE);
336 if (bp->clear_p) /* we're in "no vapor trails" mode */
338 glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
339 if (! (random() % (int) (25 / speed)))
344 if (! (random() % (int) (200 / speed)))
347 new_cube_colors (mi);
353 glScalef(1.1, 1.1, 1.1);
355 mi->polygon_count = 0;
357 get_position (bp->subcubes[0].rot, &x, &y, &z, !bp->button_down_p);
358 glTranslatef((x - 0.5) * 15,
361 gltrackball_rotate (bp->trackball);
363 glScalef (4.0, 4.0, 4.0);
365 for (i = 0; i < MI_COUNT(mi); i++)
367 GLfloat bcolor[4] = {0.0, 0.0, 0.0, 1.0};
368 GLfloat bspec[4] = {1.0, 1.0, 1.0, 1.0};
369 GLfloat bshiny = 128.0;
373 if (i != 0) /* N+1 cubes rotate relative to cube 0 */
375 get_rotation (bp->subcubes[0].rot, &x, &y, &z, False);
376 glRotatef (x * 360, 1.0, 0.0, 0.0);
377 glRotatef (y * 360, 0.0, 1.0, 0.0);
378 glRotatef (z * 360, 0.0, 0.0, 1.0);
381 get_rotation (bp->subcubes[i].rot, &x, &y, &z, !bp->button_down_p);
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);
386 bcolor[0] = bp->colors[bp->subcubes[i].ccolor].red / 65536.0;
387 bcolor[1] = bp->colors[bp->subcubes[i].ccolor].green / 65536.0;
388 bcolor[2] = bp->colors[bp->subcubes[i].ccolor].blue / 65536.0;
389 bp->subcubes[i].ccolor++;
390 if (bp->subcubes[i].ccolor >= bp->ncolors)
391 bp->subcubes[i].ccolor = 0;
394 glColor3f (bcolor[0], bcolor[1], bcolor[2]);
397 glMaterialfv (GL_FRONT, GL_SPECULAR, bspec);
398 glMateriali (GL_FRONT, GL_SHININESS, bshiny);
399 glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, bcolor);
402 glCallList (bp->cube_list);
403 mi->polygon_count += (4 * 2 * 6);
410 if (mi->fps_p) do_fps (mi);
413 glXSwapBuffers(dpy, window);
416 XSCREENSAVER_MODULE_2 ("CubeStorm", cubestorm, cube)