File indexing completed on 2024-04-28 03:44:26

 /*
     SPDX-FileCopyrightText: 2016 Artem Fedoskin <afedoskin3@gmail.com>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "skypolygonnode.h"
 
 #include "ksutils.h"
 #include "linelist.h"
 #include "nodes/polynode.h"
 
 SkyPolygonNode::SkyPolygonNode(LineList *list) : m_list(list), m_polygonNode(new PolyNode)
 {
     addChildNode(m_polygonNode);
 }
 
 void SkyPolygonNode::update(bool forceClip)
 {
     if (!m_polygonNode->visible())
     {
         m_polygonNode->show();
     }
 
     bool isVisible = false, isVisibleLast = false;
     SkyList *points = m_list->points();
     QPolygonF polygon;
     const Projector *m_proj = SkyMapLite::Instance()->projector();
 
     if (forceClip == false)
     {
         for (int i = 0; i < points->size(); ++i)
         {
             polygon << m_proj->toScreen(points->at(i).get(), false, &isVisibleLast);
             isVisible |= isVisibleLast;
         }
 
         // If 1+ points are visible, draw it
         if (polygon.size() && isVisible)
         {
             m_polygonNode->updateGeometry(polygon, true);
         }
         else
         {
             m_polygonNode->hide();
         }
 
         return;
     }
 
     SkyPoint *pLast = points->last().get();
     QPointF oLast   = m_proj->toScreen(pLast, true, &isVisibleLast);
     // & with the result of checkVisibility to clip away things below horizon
     isVisibleLast &= m_proj->checkVisibility(pLast);
 
     for (int i = 0; i < points->size(); ++i)
     {
         SkyPoint *pThis = points->at(i).get();
         QPointF oThis   = m_proj->toScreen(pThis, true, &isVisible);
 
         // & with the result of checkVisibility to clip away things below horizon
         isVisible &= m_proj->checkVisibility(pThis);
 
         if (isVisible && isVisibleLast)
         {
             polygon << oThis;
         }
         else if (isVisibleLast)
         {
             QPointF oMid = m_proj->clipLine(pLast, pThis);
             polygon << oMid;
         }
         else if (isVisible)
         {
             QPointF oMid = m_proj->clipLine(pThis, pLast);
             polygon << oMid;
             polygon << oThis;
         }
 
         pLast         = pThis;
         oLast         = oThis;
         isVisibleLast = isVisible;
     }
 
     if (polygon.size())
     {
         m_polygonNode->updateGeometry(polygon, true);
     }
     else
     {
         m_polygonNode->hide();
         return;
     }
 }
 
 void SkyPolygonNode::setColor(QColor color)
 {
     m_polygonNode->setColor(color);
 }
 
 void SkyPolygonNode::hide()
 {
     m_polygonNode->hide();
 }