FWEveDigitSetScalableMarker.cc

Go to the documentation of this file.

#include "TGLIncludes.h"
#include "Fireworks/Core/src/FWEveDigitSetScalableMarker.h"

void FWEveDigitSetScalableMarkerGL::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();
}