native_client_sdk/src/gonacl_appengine/static/bullet/world.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 verifyWorldDescription(description) {
   6   var shapes = description['shapes'];
   7   var bodies = description['bodies'];
   8   //var constraints = description['constraints'];
   9
  10   var i;
  11   var r;
  12   for (i = 0; i < shapes.length; i++) {
  13     r = verifyShapeDescription(shapes[i]);
  14     if (r == false) {
  15       return false;
  16     }
  17   }
  18
  19   for (i = 0; i < bodies.length; i++) {
  20     r = verifyBodyDescription(bodies[i], shapes);
  21     if (r == false) {
  22       return false;
  23     }
  24   }
  25
  26   return true;
  27 }
  28
  29 function verifyShapeExists(name, shapes) {
  30   var i;
  31   for (i = 0; i < shapes.length; i++) {
  32     if (shapes[i].name == name) {
  33       return true;
  34     }
  35   }
  36   return false;
  37 }
  38
  39 function verifyBodyDescription(body, shapes) {
  40   var shapeName = body['shape'];
  41   var mass = body['mass'];
  42   var friction = body['friction'];
  43   var transform = body['transform'];
  44   if (shapeName == undefined) {
  45     console.log('Body needs a shapename.');
  46     return false;
  47   }
  48   if (mass == undefined) {
  49     console.log('Body needs a mass.');
  50     return false;
  51   }
  52   if (friction == undefined) {
  53     console.log('Body needs a friction.');
  54     return false;
  55   }
  56   if (transform == undefined) {
  57     console.log('Body needs a transform.');
  58     return false;
  59   }
  60   if (transform[0] == undefined) {
  61     console.log('Body needs a transform array.');
  62     return false;
  63   }
  64   return verifyShapeExists(shapeName, shapes);
  65 }
  66
  67 function verifyShapeDescription(shape) {
  68   if (shape['name'] == undefined) {
  69     console.log('Shape needs a name.');
  70     return false;
  71   }
  72
  73   var type = shape['type'];
  74
  75   if (type != "cube" &&
  76       type != "sphere" &&
  77       type != "cylinder" &&
  78       type != "convex") {
  79         console.log('Shape type - ' + type + ' not supported.');
  80         return false;
  81       }
  82
  83   if (type == "cube") {
  84     return verifyCubeDescription(shape);
  85   }
  86
  87   if (type == "sphere") {
  88     return verifySphereDescription(shape);
  89   }
  90
  91   if (type == "cylinder") {
  92     return verifyCylinderDescription(shape);
  93   }
  94
  95   if (type == "convex") {
  96     return verifyConvexDescription(shape);
  97   }
  98
  99   return false;
 100 }
 101
 102 function verifyCubeDescription(shape) {
 103   if (shape['wx'] == undefined) {
 104     return false;
 105   }
 106   if (shape['wy'] == undefined) {
 107     return false;
 108   }
 109   if (shape['wz'] == undefined) {
 110     return false;
 111   }
 112   return true;
 113 }
 114
 115 function verifySphereDescription(shape) {
 116   if (shape['radius'] == undefined) {
 117     return false;
 118   }
 119   return true;
 120 }
 121
 122 function verifyCylinderDescription(shape) {
 123   if (shape['radius'] == undefined) {
 124     return false;
 125   }
 126   if (shape['height'] == undefined) {
 127     return false;
 128   }
 129   return true;
 130 }
 131
 132 function verifyConvexDescription(shape) {
 133   if (shape['points'] == undefined) {
 134     return false;
 135   }
 136   if (shape['points'][0] == undefined) {
 137     return false;
 138   }
 139   return true;
 140 }