Mercurial > MadButterfly
view src/chgcolor.c @ 665:7db0b76c9480
Simplify wscript
author | Thinker K.F. Li <thinker@branda.to> |
---|---|
date | Wed, 04 Aug 2010 21:33:43 +0800 |
parents | 530bb7728546 |
children | 586e50f82c1f |
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#include <stdio.h> #include <stdlib.h> #include "mb_animate.h" #include "mb_paint.h" static float comp_mb_timeval_ratio(const mb_timeval_t *a, const mb_timeval_t *b) { float ratio; ratio = (float)MB_TIMEVAL_SEC(a) * 1000000.0 + (float)MB_TIMEVAL_USEC(a); ratio /= (float)MB_TIMEVAL_SEC(b) * 1000000.0 + (float)MB_TIMEVAL_USEC(b); return ratio; } typedef struct _mb_chgcolor mb_chgcolor_t; struct _mb_chgcolor { mb_action_t action; co_comp_t r, g, b, a; paint_t *paint; mb_timeval_t start_time; const mb_timeval_t *playing_time; co_comp_t s_r, s_g, s_b, s_a; /*!< saved RGBA values. */ }; static void mb_chgcolor_start(mb_action_t *act, const mb_timeval_t *now, const mb_timeval_t *playing_time, redraw_man_t *rdman) { mb_chgcolor_t *chg = (mb_chgcolor_t *)act; MB_TIMEVAL_CP(&chg->start_time, now); chg->playing_time = playing_time; /* playing_time is in word, * it live time is as long as * actions. */ paint_color_get(chg->paint, &chg->s_r, &chg->s_g, &chg->s_b, &chg->s_a); } static void mb_chgcolor_step(mb_action_t *act, const mb_timeval_t *now, redraw_man_t *rdman) { mb_chgcolor_t *chg = (mb_chgcolor_t *)act; mb_timeval_t diff; co_comp_t r, g, b, a; float ratio, comp; MB_TIMEVAL_CP(&diff, now); MB_TIMEVAL_DIFF(&diff, &chg->start_time); ratio = comp_mb_timeval_ratio(&diff, chg->playing_time); comp = 1 - ratio; r = chg->s_r * comp + ratio * chg->r; g = chg->s_g * comp + ratio * chg->g; b = chg->s_b * comp + ratio * chg->b; a = chg->s_a * comp + ratio * chg->a; paint_color_set(chg->paint, r, g, b, a); rdman_paint_changed(rdman, chg->paint); } static void mb_chgcolor_stop(mb_action_t *act, const mb_timeval_t *now, redraw_man_t *rdman) { mb_chgcolor_t *chg = (mb_chgcolor_t *)act; paint_color_set(chg->paint, chg->r, chg->g, chg->b, chg->a); rdman_paint_changed(rdman, chg->paint); } static void mb_chgcolor_free(mb_action_t *act) { free(act); } mb_action_t *mb_chgcolor_new(co_comp_t r, co_comp_t g, co_comp_t b, co_comp_t a, paint_t *paint, mb_word_t *word) { mb_chgcolor_t *chg; chg = (mb_chgcolor_t *)malloc(sizeof(mb_chgcolor_t)); if(chg == NULL) return NULL; chg->r = r; chg->g = g; chg->b = b; chg->a = a; chg->paint = paint; chg->action.start = mb_chgcolor_start; chg->action.step = mb_chgcolor_step; chg->action.stop = mb_chgcolor_stop; chg->action.free = mb_chgcolor_free; mb_word_add_action(word, (mb_action_t *)chg); return (mb_action_t *)chg; }