1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 function randomCubeScene(numObjects, zwidth) { 6 var worldDescription = {}; 7 worldDescription.shapes = []; 8 worldDescription.shapes.push({ 9 name: 'box', 10 type: 'cube', 11 wx: 1, 12 wy: 1, 13 wz: 1 14 }); 15 worldDescription.bodies = []; 16 for ( var i = 0; i < numObjects; i ++ ) { 17 var body = {}; 18 body.shape = 'box'; 19 body.position = {}; 20 body.position.x = Math.random() * 30 - 15; 21 body.position.y = Math.random() * 50 + 10; 22 body.position.z = Math.random() * zwidth - (zwidth/2); 23 body.rotation = {}; 24 body.rotation.x = ( Math.random() * 360 ) * Math.PI / 180; 25 body.rotation.y = ( Math.random() * 360 ) * Math.PI / 180; 26 body.rotation.z = ( Math.random() * 360 ) * Math.PI / 180; 27 body.mass = 1.0; 28 body.friction = 0.8; 29 worldDescription.bodies.push(body); 30 } 31 return worldDescription; 32 } 33 34 function randomCylinderScene(numObjects, zwidth) { 35 var worldDescription = {}; 36 worldDescription.shapes = []; 37 worldDescription.shapes.push({ 38 name: 'box', 39 type: 'cylinder', 40 height: 1.0, 41 radius: 0.5 42 }); 43 worldDescription.bodies = []; 44 for ( var i = 0; i < numObjects; i ++ ) { 45 var body = {}; 46 body.shape = 'box'; 47 body.position = {}; 48 body.position.x = Math.random() * 30 - 15; 49 body.position.y = Math.random() * 50 + 10; 50 body.position.z = Math.random() * zwidth - (zwidth/2); 51 body.rotation = {}; 52 body.rotation.x = ( Math.random() * 360 ) * Math.PI / 180; 53 body.rotation.y = ( Math.random() * 360 ) * Math.PI / 180; 54 body.rotation.z = ( Math.random() * 360 ) * Math.PI / 180; 55 body.mass = 1.0; 56 body.friction = 0.2; 57 worldDescription.bodies.push(body); 58 } 59 return worldDescription; 60 } 61 62 function jengaScene(height) { 63 var worldDescription = {}; 64 worldDescription.shapes = []; 65 worldDescription.shapes.push({ 66 name: 'boxX', 67 type: 'cube', 68 wx: 5, 69 wy: 1, 70 wz: 1 71 }); 72 worldDescription.shapes.push({ 73 name: 'boxZ', 74 type: 'cube', 75 wx: 1, 76 wy: 1, 77 wz: 5 78 }); 79 worldDescription.bodies = []; 80 var baseHeight = 0.55; 81 for (var i = 0; i < height; i++) { 82 var y = i * 1.0 + baseHeight; 83 if (i % 2 == 0) { 84 for (var j = 0; j < 5; j++) { 85 var z = j * 1.0; 86 var x = 2.5; 87 88 var body = {}; 89 body.shape = 'boxX'; 90 body.position = {}; 91 body.position.x = x; 92 body.position.y = y; 93 body.position.z = z; 94 body.rotation = {}; 95 body.rotation.x = 0.0; 96 body.rotation.y = 0.0; 97 body.rotation.z = 0.0; 98 body.mass = 1.0; 99 body.friction = 0.5; 100 worldDescription.bodies.push(body); 101 } 102 } else { 103 for (var j = 0; j < 5; j++) { 104 var z = 2.5; 105 var x = j * 1.0; 106 107 var body = {}; 108 body.shape = 'boxZ'; 109 body.position = {}; 110 body.position.x = x; 111 body.position.y = y; 112 body.position.z = z; 113 body.rotation = {}; 114 body.rotation.x = 0.0; 115 body.rotation.y = 0.0; 116 body.rotation.z = 0.0; 117 body.mass = 1.0; 118 body.friction = 0.5; 119 worldDescription.bodies.push(body); 120 } 121 } 122 } 123 return worldDescription; 124 } 125 126 function randomShapeScene(numObjects) { 127 var worldDescription = {}; 128 worldDescription.shapes = []; 129 worldDescription.shapes.push({ 130 name: 'stick', 131 type: 'cube', 132 wx: 1, 133 wy: 1, 134 wz: 5 135 }); 136 worldDescription.shapes.push({ 137 name: 'tube', 138 type: 'cylinder', 139 radius: 1.0, 140 height: 2.0 141 }); 142 worldDescription.shapes.push({ 143 name: 'sphere', 144 type: 'sphere', 145 radius: 3.0 146 }); 147 worldDescription.shapes.push({ 148 name: 'tri', 149 type: 'convex', 150 points: [ 151 [0.0, 0.0, 0.0], 152 [0.0, 1.0, 0.0], 153 [0.0, 0.0, 1.0], 154 [0.0, 0.0, 1.0], 155 [2.0, 5.0, 1.0], 156 [1.0, 1.0, 1.0] 157 ] 158 }); 159 160 var numShapes = 4; 161 worldDescription.bodies = []; 162 for (var i = 0; i < numObjects; i++) { 163 var body = {}; 164 if (i % numShapes == 0) { 165 body.shape = 'stick'; 166 } else if (i % numShapes == 1) { 167 body.shape = 'tube'; 168 } else if (i % numShapes == 2) { 169 body.shape = 'sphere'; 170 } else if (i % numShapes == 3) { 171 body.shape = 'tri'; 172 } 173 body.position = {}; 174 body.position.x = Math.random() * 30 - 15; 175 body.position.y = Math.random() * 50 + 1; 176 body.position.z = Math.random() * 10 - 5; 177 body.rotation = {}; 178 body.rotation.x = ( Math.random() * 360 ) * Math.PI / 180; 179 body.rotation.y = ( Math.random() * 360 ) * Math.PI / 180; 180 body.rotation.z = ( Math.random() * 360 ) * Math.PI / 180; 181 body.mass = 1.0; 182 body.friction = 0.4; 183 worldDescription.bodies.push(body); 184 } 185 return worldDescription; 186 } 187 188 function loadJenga10() { 189 loadWorld(jengaScene(10)); 190 } 191 192 function loadJenga20() { 193 loadWorld(jengaScene(20)); 194 } 195 196 function loadRandomShapes() { 197 loadWorld(randomShapeScene(100)); 198 } 199 200 function load250RandomCubes() { 201 loadWorld(randomCubeScene(250, 10)); 202 } 203 204 function load500RandomCylinders() { 205 loadWorld(randomCylinderScene(500, 15)); 206 } 207 208 function load1000RandomCubes() { 209 loadWorld(randomCubeScene(1000, 20)); 210 } 211 212 function load2000RandomCubes() { 213 loadWorld(randomCubeScene(2000, 20)); 214 } 215 216 function loadTextScene(evt) { 217 var txt = evt.target.result; 218 if (txt == undefined) { 219 alert('Could not load file.'); 220 return; 221 } 222 var sceneDescription; 223 224 try { 225 sceneDescription = JSON.parse(txt); 226 } catch(e) { 227 alert(e); 228 return; 229 } 230 231 loadWorld(sceneDescription); 232 } 233
