Improve handling of nested matrices in hit-testing.

Closes #134.

src/item/HitResult.js

@@ -106,10 +106,9 @@ HitResult = Base.extend(/** @lends HitResult# */{
 		 *
 		 * @private
 		 */
-		getOptions: function(point, options) {
+		getOptions: function(options) {
 			// Use _merged property to not repeatetly call merge in recursion.
 			return options && options._merged ? options : Base.merge({
-				point: Point.read([point]),
 				// Type of item, for instanceof check: PathItem, TexItem, etc
 				type: null,
 				// Tolerance

src/item/Item.js

@@ -1062,16 +1062,17 @@ function(name) {
 	 * hit.
 	 */
 	hitTest: function(point, options) {
-		options = HitResult.getOptions(point, options);
+		point = Point.read(arguments);
+		options = HitResult.getOptions(Base.readValue(arguments));
 		// Check if the point is withing roughBounds + tolerance, but only if
 		// this item does not have children, since we'd have to travel up the
 		// chain already to determine the rough bounds.
 		if (!this._children && !this.getRoughBounds()
-				.expand(options.tolerance)._containsPoint(options.point))
+				.expand(options.tolerance)._containsPoint(point))
 			return null;
 		// Transform point to local coordinates but use untransformed point
 		// for bounds check above.
-		point = options.point = this._matrix._inverseTransform(options.point);
+		point = this._matrix._inverseTransform(point);
 		if ((options.center || options.bounds) &&
 				// Ignore top level layers:
 				!(this instanceof Layer && !this._parent)) {

src/item/PlacedItem.js

@@ -28,8 +28,7 @@ var PlacedItem = this.PlacedItem = Item.extend(/** @lends PlacedItem# */{
 	_boundsType: { bounds: 'strokeBounds' },
 
 	_hitTest: function(point, options, matrix) {
-		var hitResult = this._symbol._definition.hitTest(
-				this.matrix._transformPoint(point), options, matrix);
+		var hitResult = this._symbol._definition._hitTest(point, options, matrix);
 		// TODO: When the symbol's definition is a path, should hitResult contain
 		// information like HitResult#curve?
 		if (hitResult)

src/project/Project.js

@@ -223,8 +223,10 @@ var Project = this.Project = PaperScopeItem.extend(/** @lends Project# */{
 	 * hit.
 	 */
 	hitTest: function(point, options) {
-		options = HitResult.getOptions(point, options);
-		point = options.point;
+		// We don't need to do this here, but it speeds up things since we won't
+		// repeatetly convert in Item#hitTest() then.
+		point = Point.read(arguments);
+		options = HitResult.getOptions(Base.readValue(arguments));
 		// Loop backwards, so layers that get drawn last are tested first
 		for (var i = this.layers.length - 1; i >= 0; i--) {
 			var res = this.layers[i].hitTest(point, options);