native_client_sdk/src/gonacl_appengine/static/bullet/scenes.js

   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 }