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comparison src/animate.c @ 52:59a295651480

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Add action mb_chgcolor_t to change color of paints.
author Thinker K.F. Li <thinker@branda.to>
date Sat, 09 Aug 2008 22:16:23 +0800
parents 5f5bd3ac9316
children ab028c9f0930
comparison
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51:5f5bd3ac9316 52:59a295651480
356 mb_word_add_action(word, (mb_action_t *)shift); 356 mb_word_add_action(word, (mb_action_t *)shift);
357 357
358 return (mb_action_t *)shift; 358 return (mb_action_t *)shift;
359 } 359 }
360 360
361
362 #include "paint.h"
363 typedef struct _mb_chgcolor mb_chgcolor_t;
364
365 struct _mb_chgcolor {
366 mb_action_t action;
367
368 co_comp_t r, g, b, a;
369 paint_t *paint;
370
371 mb_timeval_t start_time;
372 const mb_timeval_t *playing_time;
373 co_comp_t s_r, s_g, s_b, s_a; /*!< saved RGBA values. */
374 };
375
376 static void mb_chgcolor_start(mb_action_t *act,
377 const mb_timeval_t *now,
378 const mb_timeval_t *playing_time,
379 redraw_man_t *rdman) {
380 mb_chgcolor_t *chg = (mb_chgcolor_t *)act;
381
382 MB_TIMEVAL_CP(&chg->start_time, now);
383 chg->playing_time = playing_time; /* playing_time is in word,
384 * it live time is as long as
385 * actions. */
386 paint_color_get(chg->paint,
387 &chg->s_r, &chg->s_g,
388 &chg->s_b, &chg->s_a);
389 }
390
391 static void mb_chgcolor_step(mb_action_t *act,
392 const mb_timeval_t *now,
393 redraw_man_t *rdman) {
394 mb_chgcolor_t *chg = (mb_chgcolor_t *)act;
395 mb_timeval_t diff;
396 co_comp_t r, g, b, a;
397 float ratio, comp;
398
399 MB_TIMEVAL_CP(&diff, now);
400 MB_TIMEVAL_DIFF(&diff, &chg->start_time);
401 ratio = comp_mb_timeval_ratio(&diff, chg->playing_time);
402 comp = 1 - ratio;
403
404 r = chg->s_r * comp + ratio * chg->r;
405 g = chg->s_g * comp + ratio * chg->g;
406 b = chg->s_b * comp + ratio * chg->b;
407 a = chg->s_a * comp + ratio * chg->a;
408 paint_color_set(chg->paint, r, g, b, a);
409
410 rdman_paint_changed(rdman, chg->paint);
411 }
412
413 static void mb_chgcolor_stop(mb_action_t *act,
414 const mb_timeval_t *now,
415 redraw_man_t *rdman) {
416 mb_chgcolor_t *chg = (mb_chgcolor_t *)act;
417
418 paint_color_set(chg->paint, chg->r, chg->g, chg->b, chg->a);
419
420 rdman_paint_changed(rdman, chg->paint);
421 }
422
423 static void mb_chgcolor_free(mb_action_t *act) {
424 free(act);
425 }
426
427 mb_action_t *mb_chgcolor_new(co_comp_t r, co_comp_t g,
428 co_comp_t b, co_comp_t a,
429 paint_t *paint, mb_word_t *word) {
430 mb_chgcolor_t *chg;
431
432 chg = (mb_chgcolor_t *)malloc(sizeof(mb_chgcolor_t));
433 if(chg == NULL)
434 return NULL;
435
436 chg->r = r;
437 chg->g = g;
438 chg->b = b;
439 chg->a = a;
440
441 chg->paint = paint;
442
443 chg->action.start = mb_chgcolor_start;
444 chg->action.step = mb_chgcolor_step;
445 chg->action.stop = mb_chgcolor_stop;
446 chg->action.free = mb_chgcolor_free;
447
448 mb_word_add_action(word, (mb_action_t *)chg);
449
450 return (mb_action_t *)chg;
451 }
452
361 #ifdef UNITTEST 453 #ifdef UNITTEST
362 454
363 #include <CUnit/Basic.h> 455 #include <CUnit/Basic.h>
364 456
365 typedef struct _mb_dummy mb_dummy_t; 457 typedef struct _mb_dummy mb_dummy_t;