More doubles and typed data

Author: dmah42

docs/0/box2d.json

@@ -45,8 +45,8 @@ <h2><strong>AxisAlignedBox</strong>
   * are specified, constructs the box with both bounds at the origin.
   */
  AxisAlignedBox([this.lowerBound = null, this.upperBound = null]) {
-   if (lowerBound == null) lowerBound = new Vector();
-   if (upperBound == null) upperBound = new Vector();
+   if (lowerBound == null) lowerBound = new Vector.zero();
+   if (upperBound == null) upperBound = new Vector.zero();
  }
 
  /**
@@ -132,8 +132,8 @@ <h3>Constructors</h3>
 are specified, constructs the box with both bounds at the origin.</p>
 <pre class="source">
 AxisAlignedBox([this.lowerBound = null, this.upperBound = null]) {
- if (lowerBound == null) lowerBound = new Vector();
- if (upperBound == null) upperBound = new Vector();
+ if (lowerBound == null) lowerBound = new Vector.zero();
+ if (upperBound == null) upperBound = new Vector.zero();
 }
 </pre>
 </div>