Mercurial > MadButterfly

annotate nodejs/animate.js @ 1494:ac390af12152

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Add comment and rename methods
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 03 May 2011 01:21:20 +0800
parents c028aa928cc8
children
rev   line source
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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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 shift_draw(percent) {
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13 var x, y;
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14 x = (this.targetx - this.startposx) * percent + this.startposx;
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15 y = (this.targety - this.startposy) * percent + this.startposy;
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16 this.obj.center.move(x, y);
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17 }
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18
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19 function shift(app,obj,shiftx,shifty) {
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20 obj.animated_shift = this;
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21 this._app = app;
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22 this.obj = obj;
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23 this.end = 0;
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24 this.targetx = shiftx + obj.center.x;
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25 this.targety = shifty + obj.center.y;
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26 this.startposx = obj.center.x;
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27 this.startposy = obj.center.y;
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28 }
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29
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30 exports.shift = shift;
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31 shift.prototype.draw = shift_draw;
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32
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33 /* ------------------------------------------------------------ */
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34 function rotate(app, obj, ang, duration) {
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35 this._app = app;
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36 this._obj = obj;
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37 this._ang = ang;
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38 this._start_mtx = [obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]];
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39 }
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40
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41 function rotate_draw(percent) {
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42 var percent;
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43 var ang;
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44 var sv, cv;
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45 var obj = this._obj;
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46 var mtx, shift;
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47
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48
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49 ang = percent * this._ang;
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50 sv = Math.sin(ang);
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51 cv = Math.cos(ang);
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52 mtx = [cv, -sv, 0, sv, cv, 0];
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53 shift = [1, 0, -obj.center.x, 0, 1, -obj.center.y];
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54 mtx = multiply(mtx, shift);
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55 shift = [1, 0, obj.center.x, 0, 1, obj.center.y];
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56 mtx = multiply(shift, mtx);
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57 mtx = multiply(mtx, this._start_mtx);
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58
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59 obj[0] = mtx[0];
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60 obj[1] = mtx[1];
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61 obj[2] = mtx[2];
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62 obj[3] = mtx[3];
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63 obj[4] = mtx[4];
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64 obj[5] = mtx[5];
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65
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66 this._app.refresh();
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67 }
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68
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69 rotate.prototype.draw = rotate_draw;
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70 exports.rotate = rotate;
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71
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72 function multiply(s,d) {
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73 var m=[];
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74 m[0] = s[0]*d[0]+s[1]*d[3];
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75 m[1] = s[0]*d[1]+s[1]*d[4];
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76 m[2] = s[0]*d[2]+s[1]*d[5]+s[2];
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77 m[3] = s[3]*d[0]+s[4]*d[3];
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78 m[4] = s[3]*d[1]+s[4]*d[4];
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79 m[5] = s[3]*d[2]+s[4]*d[5]+s[5];
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80 return m;
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81 }
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82
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83
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84 function scale_draw(percent) {
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85 if (this.end==1) {
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86 percent = 1;
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87 }
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88 var sx = 1 + (this.totalsx - 1) * percent;
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89 var sy = 1 + (this.totalsy - 1) * percent;
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90 var sh1 = [1, 0, -this.center_x, 0, 1, -this.center_y];
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91 var sh2 = [1, 0, this.center_x, 0, 1, this.center_y];
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92 sys.puts("sc="+sx+" sy="+sy);
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93 var scale = [sx, 0, 0, 0, sy, 0];
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94 var obj = this.obj;
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95 var mtx;
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96
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97 mtx = multiply(scale, sh1);
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98 mtx = multiply(sh2, mtx);
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99 mtx = multiply(this.orig_mtx, mtx);
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100 obj[0] = mtx[0];
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101 obj[1] = mtx[1];
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102 obj[2] = mtx[2];
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103 obj[3] = mtx[3];
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104 obj[4] = mtx[4];
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105 obj[5] = mtx[5];
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106
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107 this.app.refresh();
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108 }
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109
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110 function scale(app, obj, fact_x, fact_y, duration) {
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111 var bbox;
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112
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113 try {
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114 if (obj.animated_scale) {
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115 obj.animated_scale.end = 1;
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116 }
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117 } catch(e) {
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118
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119 }
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120
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121
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122 bbox = obj.bbox;
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123 bbox.update();
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124 obj.animated_scale = this;
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125 this.app = app;
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126 this.obj = obj;
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127 this.end = 0;
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128 this.starttime = Date.now();
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129 this.totalsx = fact_x * bbox.orig.width / bbox.width;
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130 this.totalsy = fact_y * bbox.orig.height / bbox.height;
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131 this.duration = duration*1000;
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132 this.center_x = obj.center.rel.x;
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133 this.center_y = obj.center.rel.y;
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134 this.orig_mtx = [obj[0], obj[1], obj[2], obj[3], obj[4], obj[5]];
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135 }
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136
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137
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138 exports.scale = scale;
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139 scale.prototype.draw = scale_draw;
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140
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141 function holder(app, coord) {
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diff changeset
142 var mtx = [coord[0], coord[1], coord[2], coord[3], coord[4], coord[5]];
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143
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diff changeset
144 this._mtx = mtx;
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145 this._coord = coord;
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146 this._app = app;
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147 }
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148
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diff changeset
149 holder.prototype = {
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Thinker K.F. Li <thinker@codemud.net>
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diff changeset
150 go: function(pos) {
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diff changeset
151 var sx, sy;
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152
808
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153 sx = pos.x - this._coord.center.x;
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154 sy = pos.y - this._coord.center.y;
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155 this.shift(sx, sy);
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156 },
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157
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Thinker K.F. Li <thinker@codemud.net>
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158 go_center: function(o) {
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Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
159 this.go(o.center);
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Thinker K.F. Li <thinker@codemud.net>
parents: 806
diff changeset
160 },
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161
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162 home: function() {
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parents: 776
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163 this._coord[2] = this._mtx[2];
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164 this._coord[5] = this._mtx[5];
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165 this._app.refresh();
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166 },
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167
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168 shift: function(sx, sy) {
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169 this._coord[2] = this._mtx[2] + sx;
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170 this._coord[5] = this._mtx[5] + sy;
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171 this._app.refresh();
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172 }
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parents: 776
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173 };
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174
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175 exports.holder = holder;
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176
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177
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178
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179 function alpha_draw(percent) {
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180
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181 if (this.end == 1) return;
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182 var sx = (this.targetalpha-this.startalpha)*percent+this.startalpha;
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183 this.obj.opacity=sx;
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184 this.app.refresh();
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185 this.obj.animated_alpha = null;
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186 }
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187
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188 function alpha(app,obj,alpha, duration) {
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189 try {
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190 if (obj.animated_alpha) {
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191 obj.animated_alpha.end = 1;
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192 }
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193 } catch(e) {
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194
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195 }
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196 obj.animated_alpha = this;
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197 this.app = app;
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198 this.obj = obj;
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199 this.end = 0;
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200 this.starttime = Date.now();
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201 this.startalpha = obj.opacity;
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202 this.targetalpha = alpha;
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203 this.duration = duration*1000;
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204 }
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205
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206 alpha.prototype.draw = alpha_draw;
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207 exports.alpha = alpha;
894
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208
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209 function linear_update()
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210 {
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diff changeset
211 var now = Date.now();
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diff changeset
212 var i;
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213
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214 //now = this.lasttime + 300;
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215 //this.lasttime += 300;
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diff changeset
216
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217 if (now >= this.end) {
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218 this.timer.stop();
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219 now = this.end;
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220 if (this.callback_end) {
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221 this.callback_end();
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222 this.callback_end=null;
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223 }
894
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224 }
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diff changeset
225 if (now < this.startmove) return;
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226 var per = (now-this.startmove)/this.duration/1000;
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diff changeset
227 if (per > 1) per = 1;
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c028aa928cc8 Update the API so that we can refresh screen in frame based. This will improve the poerformance of the animation.
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228 try {
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229 for(a in this.action) {
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230 this.action[a].draw(per);
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231 }
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232 } catch(e) {
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233 sys.puts(e);
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234 }
894
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235 }
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236
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diff changeset
237 function linear_start()
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238 {
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diff changeset
239 var self = this;
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240 if (this.timer)
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241 this.timer.stop();
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c028aa928cc8 Update the API so that we can refresh screen in frame based. This will improve the poerformance of the animation.
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242 this.timer = setInterval(function() {
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243 var n = Date.now();
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244 try {
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245 self.update();
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246 self._app.refresh();
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247 } catch(e) {
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248 sys.puts("libnear: "+e);
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249 }
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250
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wycc
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251 //while( Date.now() - n < 1000);
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252 }, frame_interval);
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253 this.startmove = Date.now()+this.starttime*1000;
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254 this.end = this.startmove+this.duration*1000;
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diff changeset
255 this.lasttime = this.startmove;
894
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parents: 893
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256 }
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diff changeset
257 function linear_stop()
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diff changeset
258 {
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diff changeset
259 if (this.timer) {
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diff changeset
260 this.timer.stop();
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diff changeset
261 this.timer = null;
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262 }
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263 }
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264
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265 function linear_finish()
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diff changeset
266 {
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267 for(a in this.action)
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268 this.action[a].draw(1);
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269 if (this.callback_end) {
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270 this.callback_end();
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271 this.callback_end=null;
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272 }
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273 }
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274 function linear(app,action,start, duration)
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diff changeset
275 {
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276 this.action = action;
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277 this.duration = duration;
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278 this.starttime = start;
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279 this.callback_end = null;
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280 this.timer=null;
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281 this._app =app;
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282 }
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283
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284 function linear_callback(cb)
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285 {
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286 this.callback_end = cb;
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287 }
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288
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diff changeset
289 linear.prototype.update = linear_update;
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diff changeset
290 linear.prototype.start = linear_start;
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diff changeset
291 linear.prototype.stop = linear_stop;
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292 linear.prototype.finish = linear_finish;
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293 linear.prototype.callbackAtEnd = linear_callback;
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diff changeset
294 exports.linear = linear;
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295
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296
907
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297 function multilinear_update()
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298 {
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299 }
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300
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301 function multilinear_start()
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302 {
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303 }
898
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304
907
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305 function multilinear_stop()
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306 {
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307 }
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308
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309 function multilinear_finish()
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310 {
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311 }
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312 function multilinear(action,start,stages) {
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313 sys.puts("Multilinear word is not implemented yet");
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314 }
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315
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316 exports.multilinear = multilinear;
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317 multilinear.prototype.update = multilinear_update;
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318 multilinear.prototype.start = multilinear_start;
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319 multilinear.prototype.stop = multilinear_stop;
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320 multilinear.prototype.finish = multilinear_finish;
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321 function exponential_update()
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322 {
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323 }
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324 function exponential_start()
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325 {
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326 }
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327 function exponential_stop()
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328 {
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329 }
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330 function exponential_finish()
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331 {
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332 }
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333 function exponential(action,start,stages) {
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334 sys.puts("exponential word is not implemented yet");
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335 }
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336
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337 exports.exponential = exponential;
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338 exponential.prototype.update = exponential_update;
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339 exponential.prototype.start = exponential_start;
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340 exponential.prototype.stop = exponential_stop;
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341 exponential.prototype.finish = exponential_finish;
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342
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343 function program(words)
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344 {
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345 this.words = wrods;
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346 }
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347
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348 program.prototype.start=function() {
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349 for(w in this.words) {
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350 w.start();
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351 }
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352 }
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353
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354 program.prototype.step=function(s) {
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355 sys.puts("This function is not implemented yet");
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356 }
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357 program.prototype.stop=function() {
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358 for(w in this.words) {
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359 w.stop();
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360 }
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361 }
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362 program.prototype.finish=function() {
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363 for(w in this.words) {
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364 w.finish();
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365 }
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366 }
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367
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368 exports.run = function(app,actions,start,duration,cb) {
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369 var li;
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370 li = new linear(app,actions,start,duration);
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371 li.start();
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372 li.callbackAtEnd(cb);
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373 }
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374 exports.runexp=function(actions,start,exp) {
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375 sys.puts("This function is not implemented yet");
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376 }
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377