Mercurial > MadButterfly

annotate nodejs/animate.js @ 1071:1a75a4778515 openvg

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Commont for changes of mbe
author Thinker K.F. Li <thinker@codemud.net>
date Wed, 01 Dec 2010 14:33:57 +0800
parents 4072a302b207
children c028aa928cc8
rev   line source
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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 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 shift_draw(percent) {
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13 var x, y;
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14
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15 x = (this.targetx - this.startposx) * percent + this.startposx;
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16 y = (this.targety - this.startposy) * percent + this.startposy;
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17 this.obj.center.move(x, y);
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18 this._app.refresh();
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19 }
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20
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21 function shift(app,obj,shiftx,shifty) {
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22 obj.animated_shift = this;
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23 this._app = app;
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24 this.obj = obj;
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25 this.end = 0;
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26 this.targetx = shiftx + obj.center.x;
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27 this.targety = shifty + obj.center.y;
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28 this.startposx = obj.center.x;
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29 this.startposy = obj.center.y;
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30 }
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31
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32 exports.shift = shift;
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33 shift.prototype.draw = shift_draw;
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34
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35 /* ------------------------------------------------------------ */
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36 function rotate(app, obj, ang, duration) {
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37 this._app = app;
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38 this._obj = obj;
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39 this._ang = ang;
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40 this._start_mtx = [obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]];
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41 }
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42
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43 function rotate_draw(percent) {
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44 var percent;
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45 var ang;
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46 var sv, cv;
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47 var obj = this._obj;
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48 var mtx, shift;
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49
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50
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51 ang = percent * this._ang;
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52 sv = Math.sin(ang);
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53 cv = Math.cos(ang);
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54 mtx = [cv, -sv, 0, sv, cv, 0];
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55 shift = [1, 0, -obj.center.x, 0, 1, -obj.center.y];
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56 mtx = multiply(mtx, shift);
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57 shift = [1, 0, obj.center.x, 0, 1, obj.center.y];
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58 mtx = multiply(shift, mtx);
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59 mtx = multiply(mtx, this._start_mtx);
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60
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61 obj[0] = mtx[0];
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62 obj[1] = mtx[1];
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63 obj[2] = mtx[2];
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64 obj[3] = mtx[3];
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65 obj[4] = mtx[4];
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66 obj[5] = mtx[5];
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67
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68 this._app.refresh();
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69 }
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70
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71 rotate.prototype.draw = rotate_draw;
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72 exports.rotate = rotate;
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73
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74 function multiply(s,d) {
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75 var m=[];
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76 m[0] = s[0]*d[0]+s[1]*d[3];
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77 m[1] = s[0]*d[1]+s[1]*d[4];
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78 m[2] = s[0]*d[2]+s[1]*d[5]+s[2];
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79 m[3] = s[3]*d[0]+s[4]*d[3];
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80 m[4] = s[3]*d[1]+s[4]*d[4];
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81 m[5] = s[3]*d[2]+s[4]*d[5]+s[5];
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82 return m;
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83 }
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84
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85
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86 function scale_draw(percent) {
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87 if (this.end==1) {
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88 percent = 1;
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89 }
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90 var sx = 1 + (this.totalsx - 1) * percent;
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91 var sy = 1 + (this.totalsy - 1) * percent;
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92 var sh1 = [1, 0, -this.center_x, 0, 1, -this.center_y];
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93 var sh2 = [1, 0, this.center_x, 0, 1, this.center_y];
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94 sys.puts("sc="+sx+" sy="+sy);
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95 var scale = [sx, 0, 0, 0, sy, 0];
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96 var obj = this.obj;
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97 var mtx;
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98
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99 mtx = multiply(scale, sh1);
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100 mtx = multiply(sh2, mtx);
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101 mtx = multiply(this.orig_mtx, mtx);
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102 obj[0] = mtx[0];
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103 obj[1] = mtx[1];
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104 obj[2] = mtx[2];
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105 obj[3] = mtx[3];
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106 obj[4] = mtx[4];
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107 obj[5] = mtx[5];
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108
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109 this.app.refresh();
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110 }
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111
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112 function scale(app, obj, fact_x, fact_y, duration) {
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113 var bbox;
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114
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115 try {
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116 if (obj.animated_scale) {
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117 obj.animated_scale.end = 1;
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118 }
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119 } catch(e) {
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120
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121 }
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122
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123 bbox = obj.bbox;
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124 bbox.update();
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125 obj.animated_scale = this;
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126 this.app = app;
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127 this.obj = obj;
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128 this.end = 0;
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129 this.starttime = Date.now();
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130 this.totalsx = fact_x * bbox.orig.width / bbox.width;
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131 this.totalsy = fact_y * bbox.orig.height / bbox.height;
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132 this.duration = duration*1000;
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133 this.center_x = obj.center.rel.x;
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134 this.center_y = obj.center.rel.y;
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135 this.orig_mtx = [obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]];
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136 }
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137
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138
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139 exports.scale = scale;
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140 scale.prototype.draw = scale_draw;
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141
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142 function holder(app, coord) {
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diff changeset
143 var mtx = [coord[0], coord[1], coord[2], coord[3], coord[4], coord[5]];
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144
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145 this._mtx = mtx;
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146 this._coord = coord;
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147 this._app = app;
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148 }
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149
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150 holder.prototype = {
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151 go: function(pos) {
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152 var sx, sy;
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153
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154 sx = pos.x - this._coord.center.x;
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155 sy = pos.y - this._coord.center.y;
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156 this.shift(sx, sy);
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157 },
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158
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9b6c26cf9102 Move bounding box and center back to an object
Thinker K.F. Li <thinker@codemud.net>
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159 go_center: function(o) {
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160 this.go(o.center);
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Thinker K.F. Li <thinker@codemud.net>
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161 },
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162
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163 home: function() {
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164 this._coord[2] = this._mtx[2];
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165 this._coord[5] = this._mtx[5];
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166 this._app.refresh();
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167 },
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168
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169 shift: function(sx, sy) {
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170 this._coord[2] = this._mtx[2] + sx;
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171 this._coord[5] = this._mtx[5] + sy;
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172 this._app.refresh();
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173 }
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174 };
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175
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176 exports.holder = holder;
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177
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178
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179
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180 function alpha_draw(percent) {
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181
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182 if (this.end == 1) return;
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183 var sx = (this.targetalpha-this.startalpha)*percent+this.startalpha;
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184 this.obj.opacity=sx;
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185 this.app.refresh();
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186 this.obj.animated_alpha = null;
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187 }
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188
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189 function alpha(app,obj,alpha, duration) {
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190 try {
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191 if (obj.animated_alpha) {
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192 obj.animated_alpha.end = 1;
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193 }
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194 } catch(e) {
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195
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196 }
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197 obj.animated_alpha = this;
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198 this.app = app;
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199 this.obj = obj;
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200 this.end = 0;
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201 this.starttime = Date.now();
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202 this.startalpha = obj.opacity;
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203 this.targetalpha = alpha;
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204 this.duration = duration*1000;
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205 }
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206
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207 alpha.prototype.draw = alpha_draw;
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208 exports.alpha = alpha;
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209
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210 function linear_update()
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211 {
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diff changeset
212 var now = Date.now();
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213 var i;
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214
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215 if (now >= this.end) {
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216 this.timer.stop();
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217 now = this.end;
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218 if (this.callback_end) {
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219 this.callback_end();
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220 this.callback_end=null;
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221 }
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222 }
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diff changeset
223 if (now < this.startmove) return;
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diff changeset
224 var per = (now-this.startmove)/this.duration/1000;
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225 if (per > 1) per = 1;
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226 this.action.draw(per);
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227 }
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228
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229 function linear_start()
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230 {
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diff changeset
231 var self = this;
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232 if (this.timer)
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233 this.timer.stop();
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234 this.timer = setInterval(function() { self.update();}, frame_interval);
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235 this.startmove = Date.now()+this.starttime*1000;
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236 this.end = this.startmove+this.duration*1000;
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237 }
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diff changeset
238 function linear_stop()
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239 {
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diff changeset
240 if (this.timer) {
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diff changeset
241 this.timer.stop();
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242 this.timer = null;
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243 }
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244 }
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245
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246 function linear_finish()
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247 {
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diff changeset
248 this.action.draw(1);
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249 if (this.callback_end) {
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250 this.callback_end();
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251 this.callback_end=null;
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252 }
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253 }
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254 function linear(action,start, duration)
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255 {
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diff changeset
256 this.action = action;
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257 this.duration = duration;
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258 this.starttime = start;
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259 this.callback_end = null;
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260 this.timer=null;
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261 }
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262
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263 function linear_callback(cb)
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264 {
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265 this.callback_end = cb;
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266 }
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267
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diff changeset
268 linear.prototype.update = linear_update;
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diff changeset
269 linear.prototype.start = linear_start;
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270 linear.prototype.stop = linear_stop;
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271 linear.prototype.finish = linear_finish;
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272 linear.prototype.callbackAtEnd = linear_callback;
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diff changeset
273 exports.linear = linear;
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274
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275
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276 function multilinear_update()
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277 {
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278 }
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279
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280 function multilinear_start()
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281 {
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282 }
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283
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284 function multilinear_stop()
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285 {
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286 }
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287
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288 function multilinear_finish()
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289 {
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290 }
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291 function multilinear(action,start,stages) {
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292 sys.puts("Multilinear word is not implemented yet");
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293 }
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294
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295 exports.multilinear = multilinear;
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296 multilinear.prototype.update = multilinear_update;
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297 multilinear.prototype.start = multilinear_start;
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298 multilinear.prototype.stop = multilinear_stop;
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299 multilinear.prototype.finish = multilinear_finish;
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300 function exponential_update()
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301 {
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302 }
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303 function exponential_start()
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304 {
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305 }
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306 function exponential_stop()
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307 {
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308 }
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309 function exponential_finish()
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310 {
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311 }
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312 function exponential(action,start,stages) {
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313 sys.puts("exponential word is not implemented yet");
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314 }
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315
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316 exports.exponential = exponential;
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317 exponential.prototype.update = exponential_update;
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318 exponential.prototype.start = exponential_start;
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319 exponential.prototype.stop = exponential_stop;
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320 exponential.prototype.finish = exponential_finish;
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321
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322 function program(words)
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323 {
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324 this.words = wrods;
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325 }
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326
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327 program.prototype.start=function() {
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328 for(w in this.words) {
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329 w.start();
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330 }
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331 }
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332
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333 program.prototype.step=function(s) {
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334 sys.puts("This function is not implemented yet");
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335 }
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336 program.prototype.stop=function() {
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337 for(w in this.words) {
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338 w.stop();
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339 }
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340 }
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diff changeset
341 program.prototype.finish=function() {
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342 for(w in this.words) {
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343 w.finish();
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344 }
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345 }
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346
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347 exports.run = function(actions,start,duration,cb) {
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348 var li;
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349 for(a in actions) {
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350 li = new linear(actions[a],start,duration);
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351 li.start();
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352 }
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353 li.callbackAtEnd(cb);
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354 }
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355 exports.runexp=function(actions,start,exp) {
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356 sys.puts("This function is not implemented yet");
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357 }
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358