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annotate Earth_x/universe_x.html @ 21:87850fc55445

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author <e085737>
date Sun, 16 Jan 2011 00:57:53 +0900
parents 0800fc0944ac
children
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1 <html>
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2 <head>
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3 <title>Earth and Mars</title>
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4 <script src="jkl-parsexml.js"></script>
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5 <script src="exml.js"></script>
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6 <script src="resources/J3DI.js"> </script>
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7 <script src="resources/J3DIMath.js" type="text/javascript"> </script>
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8
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9 <script id="vshader" type="x-shader/x-vertex">
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10 uniform mat4 u_modelViewProjMatrix;
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11 uniform mat4 u_normalMatrix;
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12 uniform vec3 lightDir;
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13
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14 attribute vec3 vNormal;
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15 attribute vec4 vTexCoord;
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16 attribute vec4 vPosition;
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17
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18 varying float v_Dot;
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19 varying vec2 v_texCoord;
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20
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21 void main()
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22 {
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23 gl_Position = u_modelViewProjMatrix * vPosition;
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24 v_texCoord = vTexCoord.st;
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25 vec4 transNormal = u_normalMatrix * vec4(vNormal,1);
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26 v_Dot = max(dot(transNormal.xyz, lightDir), 0.0);
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27 }
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28 </script>
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29
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30 <script id="fshader" type="x-shader/x-fragment">
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31 #ifdef GL_ES
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32 precision mediump float;
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33 #endif
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34
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35 uniform sampler2D sampler2d;
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36
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37 varying float v_Dot;
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38 varying vec2 v_texCoord;
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39
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40 void main()
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41 {
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42 vec4 color = texture2D(sampler2d,v_texCoord);
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43 color += vec4(0.1,0.1,0.1,1);
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44 gl_FragColor = vec4(color.xyz * v_Dot, color.a);
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45 }
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46 </script>
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47
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48 <script>
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49 function init()
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50 {
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51 var gl = initWebGL("example", "vshader", "fshader",
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52 [ "vNormal", "vTexCoord", "vPosition"],
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53 [ 0, 0, 0, 1 ], 10000);
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54
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55 gl.uniform3f(gl.getUniformLocation(gl.program, "lightDir"), 0, 0, 1);
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56 gl.uniform1i(gl.getUniformLocation(gl.program, "sampler2d"), 0);
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57
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58 gl.enable(gl.TEXTURE_2D);
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59
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60 // xml_fileからtextureを読み込んでいる。
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61 loadObjXml(gl, "./earth.xml");
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62 loadObjXml(gl, "./moon.xml");
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63
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64 return gl;
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65 }
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66
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67 width = -1;
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68 height = -1;
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69
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70 function reshape(ctx)
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71 {
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72 var canvas = document.getElementById('example');
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73 if (canvas.width == width && canvas.width == height)
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74 return;
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75
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76 width = canvas.width;
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77 height = canvas.height;
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78
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79 ctx.viewport(0, 0, width, height);
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80
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81 ctx.perspectiveMatrix = new J3DIMatrix4();
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82 ctx.perspectiveMatrix.perspective(30, width/height, 1, 10000);
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83 ctx.perspectiveMatrix.lookat(0,0,500, 0, 0, 0, 0, 1, 0);
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84 }
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85
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86 function drawOne(ctx, glObj, star)
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87 {
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88 // setup VBOs
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89 ctx.enableVertexAttribArray(0);
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90 ctx.enableVertexAttribArray(1);
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91 ctx.enableVertexAttribArray(2);
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92
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93 ctx.bindBuffer(ctx.ARRAY_BUFFER, glObj.vertexObject);
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94 ctx.vertexAttribPointer(2, 3, ctx.FLOAT, false, 0, 0);
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95
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96 ctx.bindBuffer(ctx.ARRAY_BUFFER, glObj.normalObject);
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97 ctx.vertexAttribPointer(0, 3, ctx.FLOAT, false, 0, 0);
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98
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99 ctx.bindBuffer(ctx.ARRAY_BUFFER, glObj.texCoordObject);
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100 ctx.vertexAttribPointer(1, 2, ctx.FLOAT, false, 0, 0);
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101
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102 ctx.bindBuffer(ctx.ELEMENT_ARRAY_BUFFER, glObj.indexObject);
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103
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104
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105 var mvMatrix = new J3DIMatrix4();
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106 var $siman2 = new J3DIMatrix4();
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107
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108
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109 mvMatrix = star.mat;
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110 mvMatrix.rotate(star.angle, 0,1,0); // 親の変換行列を取得
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111 mvMatrix.translate(star.x,star.y,star.z);
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112 mvMatrix.getAsArrayMatrix($siman2.$matrix); // 自身の変換行列を取得
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113 for(num in star.cn){
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114 star.cn.mat = $siman2; // 自分の子どもに変換行列を渡す。
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115 }
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116
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117 mvMatrix.scale(star.scale, star.scale, star.scale);
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118
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119 var normalMatrix = new J3DIMatrix4(mvMatrix);
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120 normalMatrix.invert();
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121 normalMatrix.transpose();
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122 normalMatrix.setUniform(ctx, ctx.getUniformLocation(ctx.program, "u_normalMatrix"), false);
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123
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124 var mvpMatrix = new J3DIMatrix4(ctx.perspectiveMatrix);
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125 mvpMatrix.multiply(mvMatrix);
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126 mvpMatrix.setUniform(ctx, ctx.getUniformLocation(ctx.program, "u_modelViewProjMatrix"), false);
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127
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128 ctx.bindTexture(ctx.TEXTURE_2D, glObj.texture);
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129 ctx.drawElements(ctx.TRIANGLES, glObj.numIndices, ctx.UNSIGNED_SHORT, 0);
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130 }
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131
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132
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133 function drawPicture(ctx)
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134 {
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135 reshape(ctx);
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136 ctx.clear(ctx.COLOR_BUFFER_BIT | ctx.DEPTH_BUFFER_BIT);
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137
2
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138 var Moon2 = new star( ctx.obj.Moon, null, currentAngle, 20, 0, 0, 0.3);
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139 var Moon = new star( ctx.obj.Moon, Moon2, currentAngle , 200, 0, 0, 0.6);
1
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140 var Earth = new star( ctx.obj.Earth, Moon, currentAngle, 0, 0, 0, 1.0);
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141
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142
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143 render(ctx,Earth);
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144
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145 ctx.flush();
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146
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147 framerate.snapshot();
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148
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149 currentAngle += incAngle;
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150 if (currentAngle > 360)
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151 currentAngle -= 360;
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152 }
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153
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154 function start()
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155 {
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156 var c = document.getElementById("example");
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157 var w = Math.floor(window.innerWidth * 0.9);
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158 var h = Math.floor(window.innerHeight * 0.9);
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159
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160 c.width = w;
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161 c.height = h;
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162
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163 var ctx = init();
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164 currentAngle = 0;
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165 incAngle = 0.4;
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166 var f = function() { drawPicture(ctx) };
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167 setInterval(f, 10);
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168 framerate = new Framerate("framerate");
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169 }
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170
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171 function render(ctx,star){
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172 var p = new Object();
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173 for(p=star; p; p = p.cn ){
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174 drawOne(ctx, p.texture, p);
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175 }
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176 }
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177
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178 // 惑星の情報を格納している。
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179 function star(texture,cn,angle,x,y,z,scale){
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180 this.x = x;
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181 this.y = y;
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182 this.z = z;
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183 this.mat = new J3DIMatrix4();
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184 this.angle = angle;
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185 this.scale = scale;
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186 this.texture = texture;
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187 this.cn = cn; // 子どもの名前
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188 return this;
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189 }
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190 </script>
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191 <style type="text/css">
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192 canvas {
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193 border: 2px solid black;
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194 }
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195 </style>
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196 </head>
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197 <body onload="start()">
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198 <canvas id="example">
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199 There is supposed to be an example drawing here, but it's not important.
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200 </canvas>
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201 <div id="framerate"></div>
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202 <div id="console"></div>
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203 </body>
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204 </html>