Expose point data from Contours

Add in a Point method to the Contours class to access the underlying
point coordinates from the JavaScript side.

src/Contours.cc

@@ -23,6 +23,7 @@ Contour::Init(Handle<Object> target) {
 	//Local<ObjectTemplate> proto = constructor->PrototypeTemplate();
 
 
+	NODE_SET_PROTOTYPE_METHOD(constructor, "point", Point);
 	NODE_SET_PROTOTYPE_METHOD(constructor, "size", Size);
 	NODE_SET_PROTOTYPE_METHOD(constructor, "cornerCount", CornerCount);
 	NODE_SET_PROTOTYPE_METHOD(constructor, "area", Area);
@@ -53,6 +54,23 @@ Contour::Contour(): ObjectWrap() {
 }
 
 
+Handle<Value>
+Contour::Point(const Arguments &args) {
+	HandleScope scope;
+
+		Contour *self = ObjectWap::Unwrap<Contour>(args.This());
+		int pos   = args[0]->NumberValue();
+		int index = args[1]->NumberValue();
+
+		cv::Point point = self->contours[pos][index];
+
+		Local<Object> data = Object::New();
+		data->Set(String::NewSymbol("x"), Number::New(point.x));
+		data->Set(String::NewSymbol("y"), Number::New(point.y));
+
+		return scope.Close(data);
+}
+
 // FIXME: this sould better be called "Length" as ``Contours`` is an Array like structure
 // also, this would allow to use ``Size`` for the function returning the number of corners
 // in the contour for better consistency with OpenCV.

src/Contours.h

@@ -14,6 +14,7 @@ class Contour: public node::ObjectWrap {
 	Contour();
 
 	//JSFUNC(Size)
+	static Handle<Value> Point(const v8::Arguments&);
 	static Handle<Value> Size(const v8::Arguments&);
 	static Handle<Value> CornerCount(const v8::Arguments&);
 	static Handle<Value> Area(const v8::Arguments&);