Add `getPerspectiveWarping()`

src/Surfaces/QuadSurface.cpp

@@ -287,5 +287,9 @@ void QuadSurface::setPerspectiveWarping(bool b){
 	_perspectiveWarping = b;
 }
 
+bool QuadSurface::getPerspectiveWarping(){
+	return _perspectiveWarping;
+}
+
 } // namespace piMapper
 } // namespace ofx

src/Surfaces/QuadSurface.h

@@ -37,6 +37,7 @@ class QuadSurface : public BaseSurface {
 		vector <ofVec2f> & getTexCoords();
 	
 		void setPerspectiveWarping(bool b);
+		bool getPerspectiveWarping();
 
 	private:
 		void calculate4dTextureCoords();