worked on 3D viz

scaling, moving by finger
some fixes / improvement

mapview/model/MapLayer.h

@@ -50,17 +50,17 @@ protected:
 	MapLayerType type;
 
 	/** whether this layer is visible */
-	bool visible;
+	//bool visible;
 
 public:
 
 	/** ctor */
-	MapLayer(MapLayer* parent) : parent(parent), type(MapLayerType::UNKNOWN), visible(true) {
+	MapLayer(MapLayer* parent) : parent(parent), type(MapLayerType::UNKNOWN) {
 		if (parent) {parent->addSublayer(this);}	// attach myself as child of my parent
 	}
 
 	/** ctor */
-	MapLayer(MapLayer* parent, MapLayerType type) : parent(parent), type(type), visible(true) {
+	MapLayer(MapLayer* parent, MapLayerType type) : parent(parent), type(type) {
 		if (parent) {parent->addSublayer(this);}	// attach myself as child of my parent
 	}
 
@@ -104,14 +104,15 @@ public:
 	void removeSublayer(const MapLayer* layer) { sublayers.erase(std::remove(sublayers.begin(), sublayers.end(), layer), sublayers.end()); }
 
 	/** is this layer currently visible? */
-	bool isVisible() const {return visible;}
+//	bool isVisible() const {return visible;}
+	virtual bool isVisible() const = 0;
 
 	/** make this layer visible */
-	virtual void setVisible(const bool visible) {
-		this->visible = visible;
-		onVisibilityChanged(visible);
-	}
-
+//	virtual void setVisible(const bool visible) {
+//		this->visible = visible;
+//		onVisibilityChanged(visible);
+//	}
+	virtual void setVisible(const bool visible) = 0;
 
 	/** get all sub-layers within this layer */
 	const std::vector<MapLayer*>& getSubLayers() const {return sublayers;}
@@ -145,7 +146,7 @@ public:
 		}
 	}
 
-private:
+protected:
 
 	void onElemAdded(MapModelElement* e) {
 		if (parent) {parent->onElemAdded(e);}
@@ -182,6 +183,14 @@ public:
 
 	std::string getLayerName() const override {return "root";}
 
+	bool isVisible() const override {
+		return true;
+	}
+
+	void setVisible(const bool visible) override {
+		throw "error";
+	}
+
 };