File indexing completed on 2024-04-21 03:44:17

 /*
     SPDX-FileCopyrightText: 2016 Artem Fedoskin <afedoskin3@gmail.com>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "skymaplite.h"
 
 #include <QSGTransformNode>
 
 class Projector;
 class SkyOpacityNode;
 
 /**
  * @class SkyNode
  * @short Provides virtual functions for update of coordinates and nodes hiding
  *
  * A QSGTransformNode derived class that has to be subclassed by node containers like PlanetNode and
  * PointSourceNode. SkyObject * that is passed as parameter to constructor is used in subclasses
  * to calculate new coordinates in update(). Subclasses have to implement hide() so that each of
  * their child nodes can be hidden.
  *
  * @author Artem Fedoskin
  * @version 1.0
  */
 class SkyNode : public QSGTransformNode
 {
   public:
     /**
      * @brief Constructor
      * @param skyObject that is represented on the SkyMapLIte
      */
     explicit SkyNode(SkyObject *skyObject);
     SkyNode();
 
     virtual ~SkyNode() {}
 
     inline const Projector *projector() { return SkyMapLite::Instance()->projector(); }
 
     /**
      * @short short function to access SkyMapLite
      * @return pointer to instance of SkyMapLite class
      */
     inline SkyMapLite *map() const { return SkyMapLite::Instance(); }
 
     /** Updates coordinate of the object on SkyMapLite */
     virtual void update() {}
 
     /**
      * @short sets m_drawLabel to true if it is needed to be drawn and calls update()
      * @param drawLabel true of label has to be drawn
      */
     void update(bool drawLabel);
 
     void addChildNode(QSGNode *node);
 
     /**
      * @short hides all child nodes (sets opacity of m_opacity to 0)
      */
     virtual void hide();
 
     /**
      * @short shows all child nodes (sets opacity of m_opacity to 1)
      */
     virtual void show();
 
     inline int hideCount() { return m_hideCount; }
 
     /**
      * @short changes the position of SkyNode on SkyMapLite. Has to be overridden by the classes
      * that support moving
      * @param pos new position
      */
     virtual void changePos(QPointF pos) { Q_UNUSED(pos); }
 
     /**
      * @return true if object is visible (m_opacity->opacity() != 0) else returns false
      */
     bool visible();
 
     /**
      * @short returns SkyObject associated with this SkyNode
      * @return pointer to the object of type SkyObject
      */
     SkyObject *skyObject() const { return m_skyObject; }
 
     SkyOpacityNode *m_opacity { nullptr };
 
   protected:
     SkyObject *m_skyObject { nullptr };
     bool m_drawLabel { false };
     int m_hideCount { 0 };
 };