File indexing completed on 2024-04-21 14:46:45

 /*
     SPDX-FileCopyrightText: 2006 Jason Harris <kstarss@30doradus.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "skypoint.h"
 
 class dms;
 class KStarsData;
 
 /**
  * @class SkyLine
  *
  * A series of connected line segments in the sky, composed of SkyPoints at
  * its vertices.  SkyLines are used for constellation lines and boundaries,
  * the coordinate grid, and the equator, ecliptic and horizon.
  *
  * @note the SkyLine segments are always straight lines, they are not
  * Great Circle segments joining the two endpoints.  Therefore, line segments
  * that need to follow great circles must be approximated with many short
  * SkyLine segments.
  */
 class SkyLine
 {
   public:
     SkyLine() = default;
 
     ~SkyLine();
 
     /**
      * Append a segment to the list by adding a new endpoint.
      *
      * @param p the new endpoint to be added
      */
     void append(SkyPoint *p);
 
     /**
      * @return a const pointer to a point in the SkyLine
      * param i the index position of the point
      */
     inline SkyPoint *point(int i) const { return m_pList[i]; }
 
     inline QList<SkyPoint *> &points() { return m_pList; }
 
     /** Remove all points from list */
     void clear();
 
     /**
      * Set point i in the SkyLine
      *
      * @param i the index position of the point to modify
      * @param p the new SkyPoint
      */
     void setPoint(int i, SkyPoint *p);
 
     /**
      * @return the angle subtended by any line segment along the SkyLine.
      * @param i the index of the line segment to be measured.
      * If no argument is given, the first segment is assumed.
      */
     dms angularSize(int i = 0) const;
 
     void update(KStarsData *data, KSNumbers *num = nullptr);
 
   private:
     QList<SkyPoint *> m_pList;
 };