worked on 3D viz

scaling, moving by finger
some fixes / improvement

mapview/model/MMFloorGroundTruthPoints.h

@@ -25,6 +25,15 @@ public:
 
     }
 
+	bool isVisible() const override {
+		return floor->gtpoints.enabled;
+	}
+
+	void setVisible(const bool visible) override {
+		this-> floor->gtpoints.enabled = visible;
+		onVisibilityChanged(visible);
+	}
+
     /** get the corresponding floor from the underlying model */
     Floorplan::Floor* getFloor() {return floor;}