From kstars-devel  Wed Oct 08 14:17:02 2008
From: Akarsh Simha <akarshsimha () gmail ! com>
Date: Wed, 08 Oct 2008 14:17:02 +0000
To: kstars-devel
Subject: [Kstars-devel] KDE/kdeedu/kstars/kstars/skycomponents
Message-Id: <1223475422.880110.32696.nullmailer () svn ! kde ! org>
X-MARC-Message: https://marc.info/?l=kstars-devel&m=122347544004887

SVN commit 869221 by asimha:

+ Introducing a StarObject pointer called focusStar in StarComponent
  that always gets drawn if it is on the screen.

+ Whenever a search by HD number is made, the resulting "copy"
  StarObject is put into the draw loop by making focusStar point to
  it. Although this method is ugly, it works and the requested star
  doesn't drift away.

CCMAIL: kstars-devel@kde.org



 M  +27 -2     starcomponent.cpp  
 M  +1 -0      starcomponent.h  


--- trunk/KDE/kdeedu/kstars/kstars/skycomponents/starcomponent.cpp #869220:869221
@@ -42,7 +42,8 @@
 #include <kde_file.h>
 
 StarComponent::StarComponent(SkyComponent *parent )
-    : ListComponent(parent), m_reindexNum(J2000), m_FaintMagnitude(-5.0), starsLoaded(false)
+    : ListComponent(parent), m_reindexNum(J2000), m_FaintMagnitude(-5.0), 
+      starsLoaded(false), focusStar(NULL)
 {
     m_skyMesh = SkyMesh::Instance();
     m_StarBlockFactory = StarBlockFactory::Instance();
@@ -336,6 +337,29 @@
         //        t_drawNamed += t.restart();
     }
 
+    // Draw focusStar if not null
+    if( focusStar ) {
+        if ( focusStar->updateID != updateID )
+            focusStar->JITupdate( data );
+        
+        float mag = focusStar->mag();
+        
+        if ( map->checkVisibility( focusStar ) ) {
+            QPointF o = map->toScreen( focusStar );
+            
+            if ( map->onScreen( o ) ) {
+                
+                float size = ( sizeFactor*( sizeMagLim - mag ) / sizeMagLim ) + 1.;
+                if ( size <= 1.0 ) size = 1.0;
+                if( size > maxSize ) size = maxSize;
+                
+                focusStar->draw( psky, o.x(), o.y(), size, (starColorMode()==0),
+                                 starColorIntensity(), true );
+                visibleStarCount++;
+            }
+        }
+    }
+
     // Now draw each of our DeepStarComponents
     for( int i =0; i < m_DeepStarComponents.size(); ++i ) {
         m_DeepStarComponents.at( i )->draw( psky );
@@ -553,9 +577,10 @@
         m_starObject.init( &stardata );
         m_starObject.EquatorialToHorizontal( data()->lst(), data()->geo()->lat() );
         m_starObject.JITupdate( data() );
+        focusStar = &m_starObject;
         hdidxReader.closeFile();
         // TODO: Lots of trouble since we are returning a copy. Can we fix that?
-        return &m_starObject;
+        return focusStar;
     }
         
     return 0;
--- trunk/KDE/kdeedu/kstars/kstars/skycomponents/starcomponent.h #869220:869221
@@ -161,6 +161,7 @@
     quint16        MSpT;             // Maximum number of stars in any given trixel
 
     StarObject     m_starObject;
+    StarObject     *focusStar;       // This object is always drawn
 
     KStarsSplash*  m_reloadSplash;
     KStarsSplash*  m_reindexSplash;
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