void Scene::traceRay(PhysicalRay *ray)
{
Point3D *point = 0, *minpoint = 0;
Virtual3DObject *nearestObj = 0;
double mindist = 0;
// Searching for nearest collision with any object
Q_FOREACH(Virtual3DObject* obj, m_objects)
{
point = NULL;
PictureObject* picobj = dynamic_cast<PictureObject*>(obj);
if (picobj)
point = picobj->intercrossWithRay(*ray);
LensObject* lensobj = dynamic_cast<LensObject*>(obj);
if (lensobj)
point = lensobj->intercrossWithRay(*ray);
ThinLensObject* thinlensobj = dynamic_cast<ThinLensObject*>(obj);
if (thinlensobj)
point = thinlensobj->intercrossWithRay(*ray);
FlatMirrorObject* flatmirrorobj = dynamic_cast<FlatMirrorObject*>(obj);
if (flatmirrorobj)
point = flatmirrorobj->intercrossWithRay(*ray);
if (point != NULL) {
double dist = point->dist(ray->point());
if ((dist > 1e-5) && ((minpoint == NULL) || (dist < mindist))) {
if (minpoint != NULL)
delete minpoint;
minpoint = point;
mindist = dist;
nearestObj = obj;
} else
delete point;
}
}
