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      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 }
    141