worked on 3D viz

scaling, moving by finger
some fixes / improvement

mapview/model/MMFloorPOIs.h

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