Changeset 1023 for libcaca/trunk/src
- Timestamp:
- Sep 16, 2006, 11:45:03 AM (15 years ago)
- Location:
- libcaca/trunk/src
- Files:
-
- 2 deleted
- 2 edited
- 1 moved
Legend:
- Unmodified
- Added
- Removed
-
libcaca/trunk/src
- Property svn:ignore
-
old new 5 5 cacaview 6 6 cacadraw 7 caca ball7 cacademo 8 8 cacafire 9 cacamoir10 cacaplas11 9 cacaplay 12 10 cacaserver
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- Property svn:ignore
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libcaca/trunk/src/Makefile.am
r976 r1023 6 6 AM_CPPFLAGS = -I$(top_srcdir) -I$(top_srcdir)/cucul -I$(top_srcdir)/caca -DLIBCACA=1 -DX_DISPLAY_MISSING=1 7 7 8 bin_PROGRAMS = caca fire cacaball cacaplas cacamoircacaplay cacaview img2irc $(fcntl_programs)8 bin_PROGRAMS = cacademo cacafire cacaplay cacaview img2irc $(fcntl_programs) 9 9 noinst_PROGRAMS = cacadraw 10 11 cacademo_SOURCES = cacademo.c 12 cacademo_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@ @MATH_LIBS@ 10 13 11 14 cacafire_SOURCES = aafire.c 12 15 cacafire_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@ 13 14 cacaball_SOURCES = cacaball.c15 cacaball_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@ @MATH_LIBS@16 17 cacaplas_SOURCES = cacaplas.c18 cacaplas_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@ @MATH_LIBS@19 20 cacamoir_SOURCES = cacamoir.c21 cacamoir_LDADD = ../caca/libcaca.la ../cucul/libcucul.la @CACA_LIBS@ @MATH_LIBS@22 16 23 17 cacaview_SOURCES = cacaview.c common-image.c common-image.h -
libcaca/trunk/src/cacademo.c
r1021 r1023 1 1 /* 2 * caca plas plasma effectfor libcaca2 * cacademo various demo effects for libcaca 3 3 * Copyright (c) 1998 Michele Bini <mibin@tin.it> 4 4 * 2004 Sam Hocevar <sam@zoy.org> … … 18 18 #if !defined(__KERNEL__) 19 19 # include <stdio.h> 20 # include <string.h> 20 21 # include <math.h> 21 22 # ifndef M_PI … … 27 28 #include "caca.h" 28 29 29 /* Virtual buffer size */30 /* Virtual buffer size for dither-based demos */ 30 31 #define XSIZ 256 31 32 #define YSIZ 256 32 33 static unsigned char screen[XSIZ * YSIZ]; 34 35 /* The plasma effect */ 33 36 #define TABLEX (XSIZ * 2) 34 37 #define TABLEY (YSIZ * 2) 35 38 36 static unsigned char screen[XSIZ * YSIZ];37 39 static unsigned char table[TABLEX * TABLEY]; 38 40 41 static int main_plasma(int, char **); 39 42 static void do_plasma(unsigned char *, 40 43 double, double, double, double, double, double); 41 44 42 int main (int argc, char **argv) 45 /* The metaball effect */ 46 #define METASIZE 128 47 #define METABALLS 12 48 #define CROPBALL 200 /* Colour index where to crop balls */ 49 50 static int main_ball(int, char **); 51 static void create_ball(void); 52 static void draw_ball(unsigned int, unsigned int); 53 54 static unsigned char metaball[METASIZE * METASIZE]; 55 56 /* The moiré effect */ 57 #define DISCSIZ 512 58 #define DISCTHICKNESS 96 59 60 static unsigned char disc[DISCSIZ * DISCSIZ]; 61 62 static int main_moir(int, char **); 63 static void put_disc(int, int); 64 static void draw_disc(int, char); 65 static void draw_line(int, int, char); 66 67 int main(int argc, char **argv) 68 { 69 switch(cucul_rand(0, 3)) 70 { 71 case 0: 72 return main_plasma(argc, argv); 73 case 1: 74 return main_ball(argc, argv); 75 case 2: 76 return main_moir(argc, argv); 77 } 78 79 return -1; 80 } 81 82 static int main_plasma(int argc, char **argv) 43 83 { 44 84 cucul_canvas_t *cv, *c2, *mask; caca_display_t *dp; … … 173 213 } 174 214 215 static int main_ball(int argc, char **argv) 216 { 217 cucul_canvas_t *cv; caca_display_t *dp; 218 unsigned int r[256], g[256], b[256], a[256]; 219 float dd[METABALLS], di[METABALLS], dj[METABALLS], dk[METABALLS]; 220 unsigned int x[METABALLS], y[METABALLS]; 221 cucul_dither_t *cucul_dither; 222 float i = 10.0, j = 17.0, k = 11.0; 223 int p, frame = 0, pause = 0; 224 double frameOffset[360 + 80]; 225 double frameOffset40[360]; 226 double frameOffset80[360]; 227 228 cv = cucul_create_canvas(0, 0); 229 if(!cv) 230 return 1; 231 dp = caca_create_display(cv); 232 if(!dp) 233 return 1; 234 235 caca_set_display_time(dp, 20000); 236 237 /* Make the palette eatable by libcaca */ 238 for(p = 0; p < 256; p++) 239 r[p] = g[p] = b[p] = a[p] = 0x0; 240 r[255] = g[255] = b[255] = 0xfff; 241 242 /* Create a libcucul dither smaller than our pixel buffer, so that we 243 * display only the interesting part of it */ 244 cucul_dither = cucul_create_dither(8, XSIZ - METASIZE, YSIZ - METASIZE, 245 XSIZ, 0, 0, 0, 0); 246 247 /* Generate ball sprite */ 248 create_ball(); 249 250 for(p = 0; p < METABALLS; p++) 251 { 252 dd[p] = cucul_rand(0, 100); 253 di[p] = (float)cucul_rand(500, 4000) / 6000.0; 254 dj[p] = (float)cucul_rand(500, 4000) / 6000.0; 255 dk[p] = (float)cucul_rand(500, 4000) / 6000.0; 256 } 257 258 for(frame = 0; frame < 360; frame++) { 259 frameOffset[frame] = frame * M_PI / 60; 260 frameOffset40[frame] = (frame + 40) * M_PI / 60; 261 frameOffset80[frame] = (frame + 80) * M_PI / 60; 262 } 263 264 /* Go ! */ 265 for(;;) 266 { 267 caca_event_t ev; 268 if(caca_get_event(dp, CACA_EVENT_KEY_PRESS, &ev, 0)) 269 { 270 switch(ev.data.key.ch) 271 { 272 case CACA_KEY_ESCAPE: goto end; 273 case ' ': pause = !pause; 274 } 275 } 276 277 if(pause) 278 goto paused; 279 280 frame++; 281 if(frame >= 360) 282 frame = 0; 283 284 /* Crop the palette */ 285 for(p = CROPBALL; p < 255; p++) 286 { 287 int t1, t2, t3; 288 double c1 = 1.0 + sin((double)frameOffset[frame]); 289 double c2 = 1.0 + sin((double)frameOffset40[frame]); 290 double c3 = 1.0 + sin((double)frameOffset80[frame]); 291 292 t1 = p < 0x40 ? 0 : p < 0xc0 ? (p - 0x40) * 0x20 : 0xfff; 293 t2 = p < 0xe0 ? 0 : (p - 0xe0) * 0x80; 294 t3 = p < 0x40 ? p * 0x40 : 0xfff; 295 296 r[p] = (c1 * t1 + c2 * t2 + c3 * t3) / 4; 297 g[p] = (c1 * t2 + c2 * t3 + c3 * t1) / 4; 298 b[p] = (c1 * t3 + c2 * t1 + c3 * t2) / 4; 299 } 300 301 /* Set the palette */ 302 cucul_set_dither_palette(cucul_dither, r, g, b, a); 303 304 /* Silly paths for our balls */ 305 for(p = 0; p < METABALLS; p++) 306 { 307 float u = di[p] * i + dj[p] * j + dk[p] * sin(di[p] * k); 308 float v = dd[p] + di[p] * j + dj[p] * k + dk[p] * sin(dk[p] * i); 309 u = sin(i + u * 2.1) * (1.0 + sin(u)); 310 v = sin(j + v * 1.9) * (1.0 + sin(v)); 311 x[p] = (XSIZ - METASIZE) / 2 + u * (XSIZ - METASIZE) / 4; 312 y[p] = (YSIZ - METASIZE) / 2 + v * (YSIZ - METASIZE) / 4; 313 } 314 315 i += 0.011; 316 j += 0.017; 317 k += 0.019; 318 319 memset(screen, 0, XSIZ * YSIZ); 320 321 /* Here is all the trick. Maybe if you're that 322 * clever you'll understand. */ 323 for(p = 0; p < METABALLS; p++) 324 draw_ball(x[p], y[p]); 325 326 paused: 327 /* Draw our virtual buffer to screen, letting libcucul resize it */ 328 cucul_dither_bitmap(cv, 0, 0, 329 cucul_get_canvas_width(cv), 330 cucul_get_canvas_height(cv), 331 cucul_dither, screen + (METASIZE / 2) * (1 + XSIZ)); 332 cucul_set_color(cv, CUCUL_COLOR_WHITE, CUCUL_COLOR_BLUE); 333 cucul_putstr(cv, cucul_get_canvas_width(cv) - 30, 334 cucul_get_canvas_height(cv) - 2, 335 " -=[ Powered by libcaca ]=- "); 336 337 caca_refresh_display(dp); 338 } 339 340 /* End, bye folks */ 341 end: 342 cucul_free_dither(cucul_dither); 343 caca_free_display(dp); 344 cucul_free_canvas(cv); 345 346 return 0; 347 } 348 349 /* Generate ball sprite 350 * You should read the comments, I already wrote that before ... */ 351 static void create_ball(void) 352 { 353 int x, y; 354 float distance; 355 356 for(y = 0; y < METASIZE; y++) 357 for(x = 0; x < METASIZE; x++) 358 { 359 distance = ((METASIZE/2) - x) * ((METASIZE/2) - x) 360 + ((METASIZE/2) - y) * ((METASIZE/2) - y); 361 distance = sqrt(distance) * 64 / METASIZE; 362 metaball[x + y * METASIZE] = distance > 15 ? 0 : (255 - distance) * 15; 363 } 364 } 365 366 /* You missed the trick ? */ 367 static void draw_ball(unsigned int bx, unsigned int by) 368 { 369 unsigned int color; 370 unsigned int i, e = 0; 371 unsigned int b = (by * XSIZ) + bx; 372 373 for(i = 0; i < METASIZE * METASIZE; i++) 374 { 375 color = screen[b] + metaball[i]; 376 377 if(color > 255) 378 color = 255; 379 380 screen[b] = color; 381 if(e == METASIZE) 382 { 383 e = 0; 384 b += XSIZ - METASIZE; 385 } 386 b++; 387 e++; 388 } 389 } 390 391 static int main_moir(int argc, char **argv) 392 { 393 cucul_canvas_t *cv; caca_display_t *dp; 394 unsigned int red[256], green[256], blue[256], alpha[256]; 395 cucul_dither_t *dither; 396 int i, x, y, frame = 0, pause = 0; 397 398 cv = cucul_create_canvas(0, 0); 399 if(!cv) 400 return 1; 401 dp = caca_create_display(cv); 402 if(!dp) 403 return 1; 404 405 caca_set_display_time(dp, 20000); 406 407 /* Fill various tables */ 408 for(i = 0 ; i < 256; i++) 409 red[i] = green[i] = blue[i] = alpha[i] = 0; 410 411 red[0] = green[0] = blue[0] = 0x777; 412 red[1] = green[1] = blue[1] = 0xfff; 413 414 /* Fill the circle */ 415 for(i = DISCSIZ * 2; i > 0; i -= DISCTHICKNESS) 416 draw_disc(i, (i / DISCTHICKNESS) % 2); 417 418 /* Create a libcucul dither */ 419 dither = cucul_create_dither(8, XSIZ, YSIZ, XSIZ, 0, 0, 0, 0); 420 421 /* Main loop */ 422 for(;;) 423 { 424 caca_event_t ev; 425 if(caca_get_event(dp, CACA_EVENT_KEY_PRESS, &ev, 0)) 426 { 427 switch(ev.data.key.ch) 428 { 429 case CACA_KEY_ESCAPE: goto end; 430 case ' ': pause = !pause; 431 } 432 } 433 434 if(pause) 435 goto paused; 436 437 memset(screen, 0, XSIZ * YSIZ); 438 439 /* Set the palette */ 440 red[0] = 0.5 * (1 + sin(0.05 * frame)) * 0xfff; 441 green[0] = 0.5 * (1 + cos(0.07 * frame)) * 0xfff; 442 blue[0] = 0.5 * (1 + cos(0.06 * frame)) * 0xfff; 443 444 red[1] = 0.5 * (1 + sin(0.07 * frame + 5.0)) * 0xfff; 445 green[1] = 0.5 * (1 + cos(0.06 * frame + 5.0)) * 0xfff; 446 blue[1] = 0.5 * (1 + cos(0.05 * frame + 5.0)) * 0xfff; 447 448 cucul_set_dither_palette(dither, red, green, blue, alpha); 449 450 /* Draw circles */ 451 x = cos(0.07 * frame + 5.0) * 128.0 + (XSIZ / 2); 452 y = sin(0.11 * frame) * 128.0 + (YSIZ / 2); 453 put_disc(x, y); 454 455 x = cos(0.13 * frame + 2.0) * 64.0 + (XSIZ / 2); 456 y = sin(0.09 * frame + 1.0) * 64.0 + (YSIZ / 2); 457 put_disc(x, y); 458 459 frame++; 460 461 paused: 462 cucul_dither_bitmap(cv, 0, 0, 463 cucul_get_canvas_width(cv), 464 cucul_get_canvas_height(cv), 465 dither, screen); 466 cucul_set_color(cv, CUCUL_COLOR_WHITE, CUCUL_COLOR_BLUE); 467 cucul_putstr(cv, cucul_get_canvas_width(cv) - 30, 468 cucul_get_canvas_height(cv) - 2, 469 " -=[ Powered by libcaca ]=- "); 470 caca_refresh_display(dp); 471 } 472 473 end: 474 cucul_free_dither(dither); 475 caca_free_display(dp); 476 cucul_free_canvas(cv); 477 478 return 0; 479 } 480 481 static void put_disc(int x, int y) 482 { 483 char *src = ((char*)disc) + (DISCSIZ / 2 - x) + (DISCSIZ / 2 - y) * DISCSIZ; 484 int i, j; 485 486 for(j = 0; j < YSIZ; j++) 487 for(i = 0; i < XSIZ; i++) 488 { 489 screen[i + XSIZ * j] ^= src[i + DISCSIZ * j]; 490 } 491 } 492 493 static void draw_disc(int r, char color) 494 { 495 int t, dx, dy; 496 497 for(t = 0, dx = 0, dy = r; dx <= dy; dx++) 498 { 499 draw_line(dx / 3, dy / 3, color); 500 draw_line(dy / 3, dx / 3, color); 501 502 t += t > 0 ? dx - dy-- : dx; 503 } 504 } 505 506 static void draw_line(int x, int y, char color) 507 { 508 if(x == 0 || y == 0 || y > DISCSIZ / 2) 509 return; 510 511 if(x > DISCSIZ / 2) 512 x = DISCSIZ / 2; 513 514 memset(disc + (DISCSIZ / 2) - x + DISCSIZ * ((DISCSIZ / 2) - y), 515 color, 2 * x - 1); 516 memset(disc + (DISCSIZ / 2) - x + DISCSIZ * ((DISCSIZ / 2) + y - 1), 517 color, 2 * x - 1); 518 } 519
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