1 | function GraphicsEngine() { |
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2 | this._scene = undefined; |
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3 | this._camera = undefined; |
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4 | this._renderer = undefined; |
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5 | this._canvasWidth = 500; |
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6 | this._canvasHeight = 500; |
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7 | this._containerContext = undefined; |
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8 | this._BALL_RADIUS = 0.25; |
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9 | this._controls = undefined; |
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10 | this._parts = [] |
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11 | this._debug1 = 0 |
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12 | this._showAxis = false; |
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13 | } |
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14 | |
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15 | GraphicsEngine.prototype.showPartAxis = function () { |
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16 | this._showAxis = true; |
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17 | } |
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18 | |
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19 | GraphicsEngine.prototype._createRenderer = function () { |
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20 | this._renderer = new THREE.WebGLRenderer({antialias: true}); |
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21 | this._renderer.setClearColor(0x000000, 1); |
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22 | this._renderer.setSize(this._canvasWidth, this._canvasHeight); |
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23 | this._containerContext = $("#container"); |
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24 | this._containerContext.append(this._renderer.domElement); |
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25 | } |
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26 | |
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27 | GraphicsEngine.prototype._prepareCamera = function () { |
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28 | this._camera = new THREE.PerspectiveCamera(45, this._canvasWidth / this._canvasHeight, 1, 100); |
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29 | this._camera.position.set(0, 0, 10); |
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30 | this._camera.lookAt(this._scene.position); |
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31 | this._scene.add(this._camera); |
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32 | } |
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33 | |
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34 | GraphicsEngine.prototype._addLight = function () { |
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35 | var directionalLight = new THREE.DirectionalLight(0xffffff); |
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36 | |
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37 | directionalLight.position = this._camera.position; |
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38 | directionalLight.intensity = 1; |
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39 | |
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40 | this._scene.add(directionalLight); |
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41 | } |
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42 | |
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43 | GraphicsEngine.prototype._rotateObject = function (object, part) { |
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44 | object.rotateX(part.getXrot()); |
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45 | object.rotateY(part.getYrot()); |
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46 | object.rotateZ(part.getZrot()); |
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47 | } |
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48 | |
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49 | GraphicsEngine.prototype._addBall = function (part) { |
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50 | var segments = 40, |
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51 | rings = 40; |
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52 | |
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53 | var sphereMaterial = |
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54 | new THREE.MeshPhongMaterial( |
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55 | { |
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56 | color: 0xffffff |
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57 | }); |
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58 | sphereMaterial.color.setRGB(part.getR(), part.getG(), part.getB()) |
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59 | |
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60 | var ball = new THREE.Mesh( |
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61 | new THREE.SphereGeometry(part.getRadius()/4, |
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62 | segments, |
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63 | rings), |
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64 | sphereMaterial); |
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65 | |
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66 | ball.position.set(part.getX(), part.getY(), part.getZ()); |
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67 | this._rotateObject(ball, part); |
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68 | |
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69 | |
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70 | this._parts.push(ball); |
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71 | if(this._showAxis) |
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72 | ball.add(new THREE.AxisHelper(1)); |
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73 | this._scene.add(ball); |
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74 | } |
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75 | |
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76 | GraphicsEngine.prototype._addEllipsoid = function (part) { |
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77 | var geometry = new THREE.SphereGeometry(1, 20, 20); |
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78 | geometry.applyMatrix(new THREE.Matrix4().makeScale(part.getXshape(), part.getYshape(), part.getZshape())); |
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79 | |
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80 | var ellipsoidMaterial = new THREE.MeshPhongMaterial({color: 0xffffff}); |
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81 | ellipsoidMaterial.color.setRGB(part.getR(), part.getG(), part.getB()) |
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82 | |
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83 | var ellipsoid = new THREE.Mesh(geometry, ellipsoidMaterial); |
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84 | ellipsoid.position.set(part.getX(), part.getY(), part.getZ()); |
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85 | this._rotateObject(ellipsoid, part); |
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86 | |
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87 | this._parts.push(ellipsoid); |
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88 | if(this._showAxis) |
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89 | ellipsoid.add(new THREE.AxisHelper(1)); |
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90 | this._scene.add(ellipsoid); |
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91 | } |
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92 | |
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93 | GraphicsEngine.prototype._addCylinder = function (part) { |
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94 | var geometry = new THREE.CylinderGeometry(1, 1, 1, 10, 10, false); |
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95 | geometry.applyMatrix(new THREE.Matrix4().makeScale(part.getZshape(), part.getXshape(), part.getYshape())); |
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96 | |
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97 | var material = new THREE.MeshLambertMaterial({color: 0xffffff}); |
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98 | material.color.setRGB(part.getR(), part.getG(), part.getB()); |
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99 | |
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100 | var cylinder = new THREE.Mesh(geometry, material); |
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101 | cylinder.position.set(part.getX(), part.getY(), part.getZ()); |
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102 | cylinder.overdraw = true; |
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103 | this._rotateObject(cylinder, part); |
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104 | |
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105 | this._parts.push(cylinder); |
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106 | if(this._showAxis) |
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107 | cylinder.add(new THREE.AxisHelper(1)); |
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108 | this._scene.add(cylinder); |
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109 | } |
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110 | |
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111 | GraphicsEngine.prototype._addCuboid = function (part) { |
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112 | var geometry = new THREE.CubeGeometry(2, 2, 2, 10, 10, 10); |
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113 | geometry.applyMatrix(new THREE.Matrix4().makeScale(part.getXshape(), part.getYshape(), part.getZshape())); |
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114 | |
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115 | var material = new THREE.MeshLambertMaterial({color: 0xffffff}); |
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116 | material.color.setRGB(part.getR(), part.getG(), part.getB()); |
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117 | |
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118 | var cube = new THREE.Mesh(geometry, material); |
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119 | cube.position.set(part.getX(), part.getY(), part.getZ()); |
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120 | this._rotateObject(cube, part); |
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121 | |
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122 | this._parts.push(cube); |
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123 | if(this._showAxis) |
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124 | cube.add(new THREE.AxisHelper(1)); |
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125 | this._scene.add(cube); |
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126 | } |
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127 | |
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128 | GraphicsEngine.prototype.addPart = function (part) { |
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129 | switch (part.getType()) { |
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130 | case 0: |
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131 | this._addBall(part); |
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132 | break; |
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133 | case 1: |
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134 | this._addEllipsoid(part); |
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135 | break; |
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136 | case 2: |
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137 | this._addCuboid(part); |
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138 | break; |
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139 | case 3: |
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140 | this._addCylinder(part); |
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141 | break; |
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142 | default : |
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143 | throw new Error("Unknown shape of part"); |
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144 | break; |
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145 | } |
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146 | } |
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147 | |
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148 | GraphicsEngine.prototype._addStick = function (joint) { |
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149 | |
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150 | var p1Pos = this._parts[joint.getP1()].position; |
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151 | var p2Pos = this._parts[joint.getP2()].position; |
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152 | var p1Vector = new THREE.Vector3(p1Pos.x, p1Pos.y, p1Pos.z); |
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153 | var p2Vector = new THREE.Vector3(p2Pos.x, p2Pos.y, p2Pos.z); |
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154 | |
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155 | var HALF_PI = Math.PI * .5; |
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156 | var distance = p1Vector.distanceTo(p2Vector); |
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157 | var position = p2Vector.clone().add(p1Vector).divideScalar(2); |
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158 | |
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159 | var material = new THREE.MeshPhongMaterial({color: 0x0000ff}); |
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160 | material.color.setRGB(joint.getR(), joint.getG(), joint.getB()); |
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161 | |
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162 | var cylinder = new THREE.CylinderGeometry(0.05, 0.05, distance, 20, 20, false); |
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163 | |
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164 | var orientation = new THREE.Matrix4();//a new orientation matrix to offset pivot |
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165 | var offsetRotation = new THREE.Matrix4();//a matrix to fix pivot rotation |
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166 | orientation.lookAt(p1Vector, p2Vector, new THREE.Vector3(0, 1, 0));//look at destination |
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167 | offsetRotation.makeRotationX(HALF_PI);//rotate 90 degs on X |
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168 | orientation.multiply(offsetRotation);//combine orientation with rotation transformations |
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169 | cylinder.applyMatrix(orientation); |
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170 | |
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171 | var mesh = new THREE.Mesh(cylinder, material); |
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172 | mesh.position = position; |
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173 | |
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174 | this._scene.add(mesh); |
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175 | } |
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176 | |
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177 | GraphicsEngine.prototype._hasTranslation = function (joint) { |
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178 | if (joint.getXtran() != 0) |
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179 | return true; |
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180 | if (joint.getYtran() != 0) |
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181 | return true; |
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182 | if (joint.getZtran() != 0) |
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183 | return true; |
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184 | |
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185 | return false; |
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186 | } |
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187 | |
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188 | GraphicsEngine.prototype._translate = function (joint) { |
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189 | |
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190 | if(this._hasTranslation(joint)) |
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191 | { |
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192 | var p1 = joint.getP1(); |
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193 | var p2 = joint.getP2(); |
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194 | |
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195 | var copy = this._parts[p1].clone(); |
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196 | |
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197 | copy.rotateX(joint.getXrot()); |
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198 | copy.rotateY(joint.getYrot()); |
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199 | copy.rotateZ(joint.getZrot()); |
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200 | |
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201 | copy.translateX(joint.getXtran()); |
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202 | copy.translateY(joint.getYtran()); |
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203 | copy.translateZ(joint.getZtran()); |
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204 | |
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205 | this._parts[p2].position = copy.position.clone(); |
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206 | this._parts[p2].rotation = copy.rotation.clone(); |
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207 | |
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208 | delete copy; |
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209 | } |
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210 | } |
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211 | |
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212 | GraphicsEngine.prototype.addJoint = function (joint) { |
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213 | switch (joint.getType()) { |
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214 | case 0: |
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215 | this._translate(joint); |
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216 | this._addStick(joint); |
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217 | break; |
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218 | case 1: |
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219 | this._translate(joint); |
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220 | break; |
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221 | default : |
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222 | throw new Error("Unknown shape of joint"); |
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223 | break; |
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224 | } |
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225 | } |
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226 | |
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227 | GraphicsEngine.prototype.initializeScene = function () { |
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228 | |
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229 | this._createRenderer(); |
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230 | this._scene = new THREE.Scene(); |
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231 | this._prepareCamera(); |
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232 | this._addLight(); |
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233 | this._controls = new THREE.TrackballControls(this._camera, this._renderer.domElement) |
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234 | this._debug(); |
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235 | } |
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236 | |
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237 | GraphicsEngine.prototype.renderScene = function () { |
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238 | |
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239 | var self = this; |
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240 | requestAnimationFrame( |
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241 | function () { |
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242 | self.renderScene(); |
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243 | }); |
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244 | this._renderer.render(this._scene, this._camera); |
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245 | this._controls.update(); |
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246 | |
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247 | } |
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248 | |
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249 | GraphicsEngine.prototype._debug = function() |
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250 | { |
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251 | |
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252 | this._scene.add( new THREE.AxisHelper( 20 ) ); |
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253 | } |
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254 | |
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255 | GraphicsEngine.prototype.debugTest = function() |
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256 | { |
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257 | |
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258 | } |
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259 | |
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