GLIrradCacheRender.cc

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#include <gra/camera/CameraGL.h>
#include <esg/energy/PhotonMapEnergy.h>
#include <esg/explorer/ObjsExplorer.h>
#include <gra/render/GLIrradCacheRender.h>

using namespace gra;

void GLIrradCacheRender::_render(Shader& shader,
                                 FrameBuffer& fb,
                                 Camera& camera,
                                 Scene& scene)
{
  if (_useDisplayList && _displayList) {
    glCallList(_displayList);
    return;
  }

  if (_useDisplayList) {
    _displayList = glGenLists(1);
    glNewList(_displayList, GL_COMPILE_AND_EXECUTE);
  }
  
  CameraGL cameraGL(camera);

  // perform photon mapping which computes irradiance caches
  if (rtrRender) rtrRender->renderScene(shader, fb, camera, scene);

  fb.clearColor(Color3f(0,0,0));

  if (scene.root()) {
    ObjsExplorer explorer;
    explorer.explore(*(scene.root()));

    SceneGraphObject        * pObj;
    Matrix4                   trMat;
    bool                      tr;
    AutoPtr<EnergyCoat>     * pACoat;
    EnergyCoat              * pCoat;
    PhotonMapEnergy         * pMap = NULL;
    IrradianceCache         * pIrradianceCache;
    const IrradianceCache::Value  * pValue;

    while ((pObj = explorer.result(trMat, tr)))
    {
      if (!(pACoat = pObj->getEnergyState()))              continue;
      if (!(pCoat = pACoat->origObject()))                 continue;
      if (!(pMap = dynamic_cast<PhotonMapEnergy*>(pCoat))) continue;
    }

    if ((pIrradianceCache = pMap->getIrradianceCache())) {
        pIrradianceCache->resetValuePointer();

        // vyrenderuje v¹echny hodnoty z irradiance cache
        glColor3f(0.0f, 1.0f, 0.0f);
        glBegin(GL_POINTS);
        {      
            while ((pValue = pIrradianceCache->getNextValuePointer()) != NULL)
            {
                glVertex3f( pValue->getPosition().x,
                            pValue->getPosition().y,
                            pValue->getPosition().z );
            }
            
        } glEnd();
    }
  }

  if (_useDisplayList) glEndList();
  
  
  glFlush();
  glFinish();
}

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