inline void PhotonProcess::operator()(const pbrt::Point &p,
const Photon &photon, float distSquared, float &maxDistSquared) {
if (nFound < nLookup) {
// Add photon to unordered array of photons
photons[nFound++] = ClosePhoton(&photon, distSquared);
if (nFound == nLookup) {
std::make_heap(&photons[0], &photons[nLookup]);
maxDistSquared = photons[0].distanceSquared;
}
}
else {
// Remove most distant photon from heap and add new photon
std::pop_heap(&photons[0], &photons[nLookup]);
photons[nLookup-1] = ClosePhoton(&photon, distSquared);
std::push_heap(&photons[0], &photons[nLookup]);
maxDistSquared = photons[0].distanceSquared;
}
}
void PhotonProcess::operator()(const Photon &photon,
float distSquared, float &maxDistSquared) const {
static StatsPercentage discarded("Photon Map", "Discarded photons"); // NOBOOK
discarded.Add(0, 1); // NOBOOK
if (foundPhotons < nLookup) {
// Add photon to unordered array of photons
photons[foundPhotons++] = ClosePhoton(&photon, distSquared);
if (foundPhotons == nLookup) {
std::make_heap(&photons[0], &photons[nLookup]);
maxDistSquared = photons[0].distanceSquared;
}
}
else {
// Remove most distant photon from heap and add new photon
discarded.Add(1, 0); // NOBOOK
std::pop_heap(&photons[0], &photons[nLookup]);
photons[nLookup-1] = ClosePhoton(&photon, distSquared);
std::push_heap(&photons[0], &photons[nLookup]);
maxDistSquared = photons[0].distanceSquared;
}
}
