Added Intersection functions and PointsAABB.

v3/src/geom/intersects/CircleVsRectangle.js

@@ -1,36 +1,31 @@
-var CircleVsRectangle = function (circle, rectangle)
+var CircleVsRectangle = function (circle, rect)
 {
-    var halfWidth = rectangle.width / 2;
+    var halfWidth = rect.width / 2;
-    var halfHeight = rectangle.height / 2;
+    var halfHeight = rect.height / 2;
 
-    var cx = Math.abs(circle.x - rectangle.x - halfWidth);
+    var cx = Math.abs(circle.x - rect.x - halfWidth);
     var xDist = halfWidth + circle.radius;
 
-    if (cx > xDist)
+    if (cx <= halfWidth || cx > xDist)
     {
         return false;
     }
 
-    var cy = Math.abs(circle.y - rectangle.y - halfHeight);
+    var cy = Math.abs(circle.y - rect.y - halfHeight);
     var yDist = halfHeight + circle.radius;
 
-    if (cy > yDist)
+    if (cy <= halfHeight || cy > yDist)
     {
         return false;
     }
 
-    if (cx <= halfWidth || cy <= halfHeight)
-    {
-        return true;
-    }
-
     var xCornerDist = cx - halfWidth;
     var yCornerDist = cy - halfHeight;
     var xCornerDistSq = xCornerDist * xCornerDist;
     var yCornerDistSq = yCornerDist * yCornerDist;
     var maxCornerDistSq = circle.radius * circle.radius;
 
-    return xCornerDistSq + yCornerDistSq <= maxCornerDistSq;
+    return (xCornerDistSq + yCornerDistSq <= maxCornerDistSq);
 };
 
 module.exports = CircleVsRectangle;

v3/src/geom/intersects/GetRectangleIntersection.js

@@ -0,0 +1,19 @@
+var Rectangle = require('../rectangle/Rectangle');
+var RectangleVsRectangle = require('./RectangleVsRectangle');
+
+var GetRectangleIntersection = function (rectA, rectB, output)
+{
+    if (output === undefined) { output = new Rectangle(); }
+
+    if (RectangleVsRectangle(rectA, rectB))
+    {
+        output.x = Math.max(rectA.x, rectB.x);
+        output.y = Math.max(rectA.y, rectB.y);
+        output.width = Math.min(rectA.right, rectB.right) - output.x;
+        output.height = Math.min(rectA.bottom, rectB.bottom) - output.y;
+    }
+
+    return output;
+};
+
+module.exports = GetRectangleIntersection;

v3/src/geom/intersects/RectangleVsRectangle.js

@@ -0,0 +1,11 @@
+var RectangleVsRectangle = function (rectA, rectB)
+{
+    if (rectA.width <= 0 || rectA.height <= 0 || rectB.width <= 0 || rectB.height <= 0)
+    {
+        return false;
+    }
+
+    return !(rectA.right < rectB.x || rectA.bottom < rectB.y || rectA.x > rectB.right || rectA.y > rectB.bottom);
+};
+
+module.exports = RectangleVsRectangle;

v3/src/geom/intersects/RectangleVsValues.js

@@ -0,0 +1,13 @@
+var RectangleVsValues = function (rect, left, right, top, bottom, tolerance)
+{
+    if (tolerance === undefined) { tolerance = 0; }
+
+    return !(
+        left > rect.right + tolerance ||
+        right < rect.left - tolerance ||
+        top > rect.bottom + tolerance ||
+        bottom < rect.top - tolerance
+    );
+};
+
+module.exports = RectangleVsValues;

v3/src/geom/point/GetRectangleFromPoints.js

@@ -0,0 +1,54 @@
+var Rectangle = require('../rectangle/Rectangle');
+
+/**
+* Calculates the Axis Aligned Bounding Box (or aabb) from an array of points.
+*
+* @method Phaser.Rectangle#aabb
+* @param {Phaser.Point[]} points - The array of one or more points.
+* @param {Phaser.Rectangle} [out] - Optional Rectangle to store the value in, if not supplied a new Rectangle object will be created.
+* @return {Phaser.Rectangle} The new Rectangle object.
+* @static
+*/
+var GetRectangleFromPoints = function (points, out)
+{
+    if (out === undefined) { out = new Rectangle(); }
+
+    var xMax = Number.NEGATIVE_INFINITY;
+    var xMin = Number.POSITIVE_INFINITY;
+    var yMax = Number.NEGATIVE_INFINITY;
+    var yMin = Number.POSITIVE_INFINITY;
+
+    for (var i = 0; i < points.length; i++)
+    {
+        var point = points[i];
+
+        if (point.x > xMax)
+        {
+            xMax = point.x;
+        }
+
+        if (point.x < xMin)
+        {
+            xMin = point.x;
+        }
+
+        if (point.y > yMax)
+        {
+            yMax = point.y;
+        }
+
+        if (point.y < yMin)
+        {
+            yMin = point.y;
+        }
+    }
+
+    out.x = xMin;
+    out.y = yMin;
+    out.width = xMax - xMin;
+    out.height = yMax - yMin;
+
+    return out;
+};
+
+module.exports = GetRectangleFromPoints;