/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/Fireworks/Core/src/FWEveDigitSetScalableMarker.cc

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#ifndef Fireworks_Core_FWMarkerDigitSetGL_h
#define Fireworks_Core_FWMarkerDigitSetGL_h

#include "TEveQuadSet.h"
#include "TEveQuadSetGL.h"
#include "TGLIncludes.h"
#include "TGLRnrCtx.h"
#include "TAttMarker.h"

class FWEveDigitSetScalableMarker : public TEveQuadSet, public TAttMarker
{
public:
   FWEveDigitSetScalableMarker() {}
   virtual ~FWEveDigitSetScalableMarker() {}
   
   ClassDef( FWEveDigitSetScalableMarker, 0);
};

//--------------------------------------------
class FWEveDigitSetScalableMarkerGL : public TEveQuadSetGL
{
public:
   FWEveDigitSetScalableMarkerGL() {}
   virtual ~FWEveDigitSetScalableMarkerGL() {}
   
   virtual void DirectDraw(TGLRnrCtx & rnrCtx) const
   {
      glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT | GL_POINT_BIT);
      glEnable(GL_POINT_SMOOTH);
      glDisable(GL_LIGHTING);
          
      TEveChunkManager::iterator qi(fM->GetPlex());
      if (rnrCtx.Highlight() && fHighlightSet)
         qi.fSelection = fHighlightSet;
      
      if (rnrCtx.SecSelection()) glPushName(0);
      
      glPointSize(((FWEveDigitSetScalableMarker*)fM)->GetMarkerSize());
      while (qi.next()) {
         TEveQuadSet::QFreeQuad_t* q =  (TEveQuadSet::QFreeQuad_t*) qi();
         if (q->fValue < 0)
            continue;
         TGLUtil::ColorAlpha(Color_t(q->fValue));
         if (rnrCtx.SecSelection()) glLoadName(qi.index());
         float* p = &q->fVertices[0];
         glBegin(GL_LINES);
         float c[3]  =  {0.5f*(p[0]+p[6]), 0.5f*(p[1]+p[7]), 0.5f*(p[2]+p[8])};
         
         float d = p[6] - p[0];
         glVertex3f( c[0] -d, c[1], c[2]); glVertex3f(c[0] + d, c[1], c[2]);
         glVertex3f( c[0] , c[1] -d, c[2]); glVertex3f(c[0] , c[1] +d, c[2]);
         glVertex3f( c[0] , c[1], c[2]-d); glVertex3f(c[0] , c[1], c[2] +d);
         
         glEnd();
         
         glBegin(GL_POINTS);
         glVertex3fv(&c[0]);
         glEnd();
         
      }
      
      glPopAttrib();
   }
   
   ClassDef(FWEveDigitSetScalableMarkerGL, 0);
};


#endif