public void Run()
{
ByteUtil.InitByteUtil();
IntersectionState istate = new IntersectionState();
for (int i = start; i < end; i++)
{
lock (lockObj)
{
UI.taskUpdate(server.photonCounter);
server.photonCounter++;
if (UI.taskCanceled())
{
return;
}
}
int qmcI = i + seed;
double rand = QMC.halton(0, qmcI) * histogram[histogram.Length - 1];
int j = 0;
while (rand >= histogram[j] && j < histogram.Length)
{
j++;
}
// make sure we didn't pick a zero-probability light
if (j == histogram.Length)
{
continue;
}
double randX1 = (j == 0) ? rand / histogram[0] : (rand - histogram[j]) / (histogram[j] - histogram[j - 1]);
double randY1 = QMC.halton(1, qmcI);
double randX2 = QMC.halton(2, qmcI);
double randY2 = QMC.halton(3, qmcI);
Point3 pt = new Point3();
Vector3 dir = new Vector3();
Color power = new Color();
server.lights[j].getPhoton(randX1, randY1, randX2, randY2, pt, dir, power);
power.mul(scale);
Ray r = new Ray(pt, dir);
server.scene.trace(r, istate);
if (istate.hit())
{
server.shadePhoton(ShadingState.createPhotonState(r, istate, qmcI, map, server), power);
}
}
}