Mercurial > MadButterfly

annotate nodejs/animate.js @ 857:ea1e88c40548 abs_n_rel_center

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Make scale work on center of an object
author Thinker K.F. Li <thinker@codemud.net>
date Mon, 20 Sep 2010 22:43:44 +0800
parents 88f4916a0691
children ed49dc0a26f1
rev   line source
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Thinker K.F. Li <thinker@codemud.net>
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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586e50f82c1f Unify coding style tag for emacs and vim.
Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
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2 // vim: sw=4:ts=8:sts=4
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3 var sys=require("sys");
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4
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5 /*
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6 * This is configuration for animate module. For slower or speeder
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7 * machines, ffs can be decreased or increased respective.
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8 */
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9 var ffs = 12;
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10 var frame_interval = 1000 / ffs;
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11
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12 function linear_draw() {
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13 var percent;
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14 var x, y;
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15
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16 percent = (Date.now() - this._start_tm) / this.duration;
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17 if(percent >= 1) {
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18 percent = 1;
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19 if (this.obj.timer) {
3c48a77b75d3 USe obj.x and obj.y to implement the linear animation
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20 this.obj.timer.stop();
3c48a77b75d3 USe obj.x and obj.y to implement the linear animation
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21 delete this.obj.timer;
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22 }
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23 }
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24 x = (this.targetx-this.startposx)*percent+this.startposx;
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25 y = (this.targety-this.startposy)*percent+this.startposy;
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26 this.obj.center.move(x, y);
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27 this.app.refresh();
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28 }
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29
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30 function linear_draw_start() {
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31 var obj = this.obj;
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32 var self = this;
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33
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34 if(obj.timer)
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35 obj.timer.stop();
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36
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37 this._start_tm = Date.now();
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38 obj.timer = setInterval(function() { self.draw(); }, frame_interval);
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39 }
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40
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41 function linear(app,obj,shiftx,shifty,duration) {
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42 obj.animated_linear = this;
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43 this.app = app;
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44 this.obj = obj;
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45 this.end = 0;
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46 this.targetx = shiftx + obj.center.x;
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47 this.targety = shifty + obj.center.y;
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48 this.startposx = obj.center.x;
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49 this.startposy = obj.center.y;
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50 this.duration = duration*1000;
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51 }
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52
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53 exports.linear = linear;
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54 linear.prototype.start = linear_draw_start;
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55 linear.prototype.draw = linear_draw;
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56
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57 /* ------------------------------------------------------------ */
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58 function rotate(app, obj, ang, duration) {
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59 this._app = app;
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60 this._obj = obj;
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61 this._ang = ang;
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62 this._duration = duration * 1000;
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63 }
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64
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65 function rotate_start() {
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66 var obj = this._obj;
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67 var self = this;
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68
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69 if(obj.timer)
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70 obj.timer.stop();
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71
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72 this._start_mtx = [obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]];
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73 this._start_tm = Date.now();
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74 obj.timer = setInterval(function() { self.draw(); }, frame_interval);
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75 }
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76
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77 function rotate_draw() {
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78 var percent;
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79 var ang;
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80 var sv, cv;
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81 var obj = this._obj;
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82 var mtx, shift;
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83
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84 percent = (Date.now() - this._start_tm) / this._duration;
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85 if(percent >= 1) {
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86 percent = 1;
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87 obj.timer.stop();
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88 }
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89
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90 ang = percent * this._ang;
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91 sv = Math.sin(ang);
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92 cv = Math.cos(ang);
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93 mtx = [cv, -sv, 0, sv, cv, 0];
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94
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9b6c26cf9102 Move bounding box and center back to an object
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95 shift = [1, 0, -obj.center.x, 0, 1, -obj.center.y];
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96 mtx = multiply(mtx, shift);
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97 shift = [1, 0, obj.center.x, 0, 1, obj.center.y];
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98 mtx = multiply(shift, mtx);
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99 mtx = multiply(mtx, this._start_mtx);
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100
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101 obj[0] = mtx[0];
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102 obj[1] = mtx[1];
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103 obj[2] = mtx[2];
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104 obj[3] = mtx[3];
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105 obj[4] = mtx[4];
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106 obj[5] = mtx[5];
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107
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108 this._app.refresh();
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109 }
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110
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111 rotate.prototype.start = rotate_start;
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112 rotate.prototype.draw = rotate_draw;
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113 exports.rotate = rotate;
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114
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115 function multiply(s,d) {
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116 var m=[];
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117 m[0] = s[0]*d[0]+s[1]*d[3];
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118 m[1] = s[0]*d[1]+s[1]*d[4];
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119 m[2] = s[0]*d[2]+s[1]*d[5]+s[2];
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120 m[3] = s[3]*d[0]+s[4]*d[3];
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121 m[4] = s[3]*d[1]+s[4]*d[4];
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122 m[5] = s[3]*d[2]+s[4]*d[5]+s[5];
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123 return m;
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124 }
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125
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126
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127 function scale_draw() {
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128 if (this.end == 1) return;
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129 var percent = (Date.now() - this.starttime)/this.duration;
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130 if (percent > 1) percent = 1;
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131 var sx = 1 + (this.targetx - 1) * percent;
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132 var sy = 1 + (this.targety - 1) * percent;
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133 var sh1 = [1, 0, -this.center_x, 0, 1, -this.center_y];
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134 var sh2 = [1, 0, this.center_x, 0, 1, this.center_y];
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135 var scale=[sx, 0, 0, 0, sy, 0];
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136 var obj = this.obj;
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diff changeset
137 var mtx;
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
138
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
139 mtx = multiply(scale, sh1);
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
140 mtx = multiply(sh2, mtx);
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
141 mtx = multiply(this.orig_mtx, mtx);
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
142 sys.puts([obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]]);
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
143 obj[0] = mtx[0];
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
144 obj[1] = mtx[1];
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
145 obj[2] = mtx[2];
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
146 obj[3] = mtx[3];
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
147 obj[4] = mtx[4];
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
148 obj[5] = mtx[5];
758
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
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diff changeset
149
794
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
150 this.app.refresh();
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
151 var self = this;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
152 if (percent < 1) {
857
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
153 obj.timer=setTimeout(function() { self.draw();}, frame_interval);
794
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
154 return;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
155 }
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
156 this.app.refresh();
857
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
157 obj.animated_scale = null;
758
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
158 }
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
159
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
160 function scale(app,obj,targetx,targety, duration) {
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
161 try {
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
162 if (obj.animated_scale) {
794
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
163 //obj[0] = obj.animated_scale.targetx;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
164 //obj[4] = obj.animated_scale.targety;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
165 //obj[2] = obj.animated_scale.final_offset_x;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
166 //obj[5] = obj.aninated_scale.final_offset_y;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
167 obj.animated_scale.end = 1;
758
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
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diff changeset
168 }
794
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
169 } catch(e) {
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
170
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
171 }
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
172 obj.animated_scale = this;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
173 this.app = app;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
174 this.obj = obj;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
175 this.end = 0;
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Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
176 this.starttime = Date.now();
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Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
177 this.startsx = obj[0];
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Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
178 this.startsy = obj[4];
758
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
179 this.targetx = targetx;
794
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
180 this.targety = targety;
a27606be2cab Change modeline
Thinker K.F. Li <thinker@codemud.net>
parents: 788
diff changeset
181 this.duration = duration*1000;
857
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
182 this.center_x = obj.center.rel.x;
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
183 this.center_y = obj.center.rel.y;
ea1e88c40548 Make scale work on center of an object
Thinker K.F. Li <thinker@codemud.net>
parents: 856
diff changeset
184 this.orig_mtx = [obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]];
758
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
185 }
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
186
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
187
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
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diff changeset
188 exports.scale = scale;
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
189 scale.prototype.start = scale_draw;
d11b0900f03c Check in the dynamic menu example. Currently, it illustarte a bug in the renderer.
wycc
parents: 728
diff changeset
190 scale.prototype.draw = scale_draw;
788
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
191
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
192 function holder(app, coord) {
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
193 var mtx = [coord[0], coord[1], coord[2], coord[3], coord[4], coord[5]];
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
194
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
195 this._mtx = mtx;
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
196 this._coord = coord;
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
197 this._app = app;
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
198 }
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
199
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
200 holder.prototype = {
808
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
201 go: function(pos) {
788
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
202 var sx, sy;
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
203
808
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
204 sx = pos.x - this._coord.center.x;
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
205 sy = pos.y - this._coord.center.y;
788
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
206 this.shift(sx, sy);
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
207 },
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
208
808
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
209 go_center: function(o) {
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
210 this.go(o.center);
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
211 },
9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
212
788
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
213 home: function() {
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
214 this._coord[2] = this._mtx[2];
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
215 this._coord[5] = this._mtx[5];
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
216 this._app.refresh();
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
217 },
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
218
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
219 shift: function(sx, sy) {
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
220 this._coord[2] = this._mtx[2] + sx;
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
221 this._coord[5] = this._mtx[5] + sy;
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
222 this._app.refresh();
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
223 }
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
224 };
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
225
7ec13634c97d Add holder for animate
Thinker K.F. Li <thinker@codemud.net>
parents: 776
diff changeset
226 exports.holder = holder;
831
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
227
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
228
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
229
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
230 function alpha_draw() {
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
231
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
232 if (this.end == 1) return;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
233 var percent = (Date.now() - this.starttime)/this.duration;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
234 if (percent > 1) percent = 1;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
235 var sx = (this.targetalpha-this.startalpha)*percent+this.startalpha;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
236 this.obj.opacity=sx;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
237
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
238 this.app.refresh();
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
239 var self = this;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
240 if (percent < 1) {
844
3c48a77b75d3 USe obj.x and obj.y to implement the linear animation
wycc
parents: 831
diff changeset
241 this.obj.timer=setTimeout(function() { self.draw();}, frame_interval);
831
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
242 return;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
243 }
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
244 this.app.refresh();
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
245 this.obj.animated_alpha = null;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
246 }
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
247
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
248 function alpha(app,obj,alpha, duration) {
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
249 try {
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
250 if (obj.animated_alpha) {
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
251 obj.animated_alpha.end = 1;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
252 }
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
253 } catch(e) {
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
254
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
255 }
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
256 obj.animated_alpha = this;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
257 this.app = app;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
258 this.obj = obj;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
259 this.end = 0;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
260 this.starttime = Date.now();
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
261 this.startalpha = obj.opacity;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
262 this.targetalpha = alpha;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
263 this.duration = duration*1000;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
264 }
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
265
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
266 alpha.prototype.start = alpha_draw;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
267 alpha.prototype.draw = alpha_draw;
904b6928f727 Add animation.alpha
wycc
parents: 822
diff changeset
268 exports.alpha = alpha;