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annotate src/chgcolor.c @ 1160:1a699dc00fa3

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Fix the issue of not removing node in old scene when switching scenes. - When a timeline is playing and crossing two scenes (tween block), nodes, for the old scene, in duplicate group must be removed. But, it is not. - It is fixed by checking if nodes, in the duplicate group, are also in the key frame next to the new scene. All nodes that is not in next key frame are remove.
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 28 Dec 2010 13:35:34 +0800
parents 586e50f82c1f
children
rev   line source
822
586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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2 // vim: sw=4:ts=8:sts=4
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include "mb_animate.h"
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6 #include "mb_paint.h"
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7
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8 static float comp_mb_timeval_ratio(const mb_timeval_t *a,
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9 const mb_timeval_t *b) {
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10 float ratio;
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11
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12 ratio = (float)MB_TIMEVAL_SEC(a) * 1000000.0 + (float)MB_TIMEVAL_USEC(a);
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13 ratio /= (float)MB_TIMEVAL_SEC(b) * 1000000.0 + (float)MB_TIMEVAL_USEC(b);
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14 return ratio;
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15 }
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16
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17 typedef struct _mb_chgcolor mb_chgcolor_t;
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18
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19 struct _mb_chgcolor {
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20 mb_action_t action;
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21
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22 co_comp_t r, g, b, a;
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23 paint_t *paint;
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24
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25 mb_timeval_t start_time;
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26 const mb_timeval_t *playing_time;
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27 co_comp_t s_r, s_g, s_b, s_a; /*!< saved RGBA values. */
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28 };
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29
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30 static void mb_chgcolor_start(mb_action_t *act,
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31 const mb_timeval_t *now,
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32 const mb_timeval_t *playing_time,
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33 redraw_man_t *rdman) {
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34 mb_chgcolor_t *chg = (mb_chgcolor_t *)act;
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35
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36 MB_TIMEVAL_CP(&chg->start_time, now);
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37 chg->playing_time = playing_time; /* playing_time is in word,
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38 * it live time is as long as
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39 * actions. */
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40 paint_color_get(chg->paint,
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41 &chg->s_r, &chg->s_g,
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42 &chg->s_b, &chg->s_a);
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43 }
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44
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45 static void mb_chgcolor_step(mb_action_t *act,
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46 const mb_timeval_t *now,
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47 redraw_man_t *rdman) {
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48 mb_chgcolor_t *chg = (mb_chgcolor_t *)act;
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49 mb_timeval_t diff;
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50 co_comp_t r, g, b, a;
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51 float ratio, comp;
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52
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53 MB_TIMEVAL_CP(&diff, now);
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54 MB_TIMEVAL_DIFF(&diff, &chg->start_time);
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55 ratio = comp_mb_timeval_ratio(&diff, chg->playing_time);
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56 comp = 1 - ratio;
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57
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58 r = chg->s_r * comp + ratio * chg->r;
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59 g = chg->s_g * comp + ratio * chg->g;
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60 b = chg->s_b * comp + ratio * chg->b;
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61 a = chg->s_a * comp + ratio * chg->a;
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62 paint_color_set(chg->paint, r, g, b, a);
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63
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64 rdman_paint_changed(rdman, chg->paint);
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65 }
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66
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67 static void mb_chgcolor_stop(mb_action_t *act,
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68 const mb_timeval_t *now,
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69 redraw_man_t *rdman) {
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70 mb_chgcolor_t *chg = (mb_chgcolor_t *)act;
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71
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72 paint_color_set(chg->paint, chg->r, chg->g, chg->b, chg->a);
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73
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74 rdman_paint_changed(rdman, chg->paint);
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75 }
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76
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77 static void mb_chgcolor_free(mb_action_t *act) {
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78 free(act);
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79 }
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80
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81 mb_action_t *mb_chgcolor_new(co_comp_t r, co_comp_t g,
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82 co_comp_t b, co_comp_t a,
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83 paint_t *paint, mb_word_t *word) {
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84 mb_chgcolor_t *chg;
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85
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86 chg = (mb_chgcolor_t *)malloc(sizeof(mb_chgcolor_t));
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87 if(chg == NULL)
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88 return NULL;
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89
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90 chg->r = r;
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91 chg->g = g;
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92 chg->b = b;
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93 chg->a = a;
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94
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95 chg->paint = paint;
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96
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97 chg->action.start = mb_chgcolor_start;
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98 chg->action.step = mb_chgcolor_step;
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99 chg->action.stop = mb_chgcolor_stop;
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100 chg->action.free = mb_chgcolor_free;
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101
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102 mb_word_add_action(word, (mb_action_t *)chg);
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103
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104 return (mb_action_t *)chg;
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105 }
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106
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107