Mercurial > MadButterfly

annotate nodejs/animate.js @ 787:0899dcac441c

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Set bounding box attributes for JS Parse inkscape:bbox-x/y/width/height to - bbox_x - bbox_y - bbox_width - bbox_height
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 31 Aug 2010 01:26:22 +0800
parents 77b561bb7929
children 7ec13634c97d
rev   line source
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468cd504800c Rewrite the animation as a module.
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1 var sys=require("sys");
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2
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3 function linear_draw() {
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4 if (this.end == 1) return;
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5 var percent = (Date.now() - this.starttime)/this.duration;
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6 if (percent > 1) percent = 1;
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7 this.obj[2] = (this.targetx-this.startposx)*percent+this.startposx;
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8 this.obj[5] = (this.targety-this.startposy)*percent+this.startposy;
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9 this.app.refresh();
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10 var self = this;
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11 if (percent < 1) {
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12 this.obj.timer=setTimeout(function() { self.draw();}, 20);
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13 return;
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14 }
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15 this.app.refresh();
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16 this.obj.animated_linear = null;
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17 }
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18 function linear(app,obj,targetx,targety,duration) {
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19 try {
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20 if (obj.animated_linear) {
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21 obj[5] = obj.animated_linear.targety;
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22 obj[2] = obj.animated_linear.targetx;
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23 obj.animated_linear.end = 1;
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24 }
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25 } catch(e) {
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26
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27 }
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28 obj.animated_linear = this;
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29 this.app = app;
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30 this.obj = obj;
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31 this.end = 0;
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32 this.starttime = Date.now();
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33 this.startposx = obj[2];
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34 this.startposy = obj[5];
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35 this.targetx = targetx;
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36 this.targety = targety;
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37 this.duration = duration*1000;
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38 }
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39
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40 exports.linear = linear;
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41 linear.prototype.start = linear_draw;
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42 linear.prototype.draw = linear_draw;
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43
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44 function multiply(s,d) {
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45 var m=[];
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46 m[0] = s[0]*d[0]+s[1]*d[3];
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47 m[1] = s[0]*d[1]+s[1]*d[4];
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48 m[2] = s[0]*d[2]+s[1]*d[5]+s[2];
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49 m[3] = s[3]*d[0]+s[4]*d[3];
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50 m[4] = s[3]*d[1]+s[4]*d[4];
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51 m[5] = s[3]*d[2]+s[4]*d[5]+s[5];
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52 s[0] = m[0];
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53 s[1] = m[1];
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54 s[2] = m[2];
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55 s[3] = m[3];
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56 s[4] = m[4];
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57 s[5] = m[5];
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58 }
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59
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60
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61 function scale_draw() {
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62 if (this.end == 1) return;
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63 var percent = (Date.now() - this.starttime)/this.duration;
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64 if (percent > 1) percent = 1;
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65 var sx = (this.targetx-this.startsx)*percent+this.startsx;
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66 var sy = (this.targety-this.startsy)*percent+this.startsy;
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67 var t=[sx,0,0,0,sy,0];
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68 this.obj[0] = sx;
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69 this.obj[4] = sy;
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70 this.obj[2] = this.origin_offset_x - (sx-this.startsx)*this.obj.center.x;
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71 this.obj[5] = this.origin_offset_y - (sy-this.startsy)*this.obj.center.y;
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72
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73 this.app.refresh();
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74 var self = this;
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75 if (percent < 1) {
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76 this.obj.timer=setTimeout(function() { self.draw();}, 20);
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77 return;
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78 }
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79 this.app.refresh();
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80 this.obj.animated_scale = null;
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81 }
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82
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83 function scale(app,obj,targetx,targety, duration) {
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84 try {
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85 if (obj.animated_scale) {
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86 //obj[0] = obj.animated_scale.targetx;
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87 //obj[4] = obj.animated_scale.targety;
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88 //obj[2] = obj.animated_scale.final_offset_x;
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89 //obj[5] = obj.aninated_scale.final_offset_y;
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90 obj.animated_scale.end = 1;
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91 }
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92 } catch(e) {
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93
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94 }
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95 obj.animated_scale = this;
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96 this.app = app;
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97 this.obj = obj;
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98 this.end = 0;
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99 this.starttime = Date.now();
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100 this.startsx = obj[0];
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101 this.startsy = obj[4];
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102 this.targetx = targetx;
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103 this.targety = targety;
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104 this.duration = duration*1000;
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105 this.origin_offset_x = obj[2];
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106 this.origin_offset_y = obj[5];
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107 this.final_offset_x = this.origin_offset_x-(targetx-this.startsx)*obj.center.x;
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108 this.final_offset_y = this.origin_offset_y-(targety-this.startsy)*obj.center.y;
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109 }
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110
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111
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112 exports.scale = scale;
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113 scale.prototype.start = scale_draw;
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114 scale.prototype.draw = scale_draw;