public bool calculatePhotons(PhotonStore map, string type, int seed, Options options)
{
if (map == null)
return true;
if (lights.Length == 0)
{
UI.printError(UI.Module.LIGHT, "Unable to trace {0} photons, no lights in scene", type);
return false;
}
float[] histogram = new float[lights.Length];
histogram[0] = lights[0].getPower();
for (int i = 1; i < lights.Length; i++)
histogram[i] = histogram[i - 1] + lights[i].getPower();
UI.printInfo(UI.Module.LIGHT, "Tracing {0} photons ...", type);
map.prepare(options, scene.getBounds());
int numEmittedPhotons = map.numEmit();
if (numEmittedPhotons <= 0 || histogram[histogram.Length - 1] <= 0)
{
UI.printError(UI.Module.LIGHT, "Photon mapping enabled, but no {0} photons to emit", type);
return false;
}
UI.taskStart("Tracing " + type + " photons", 0, numEmittedPhotons);
Thread[] photonThreads = new Thread[scene.getThreads()];
float scale = 1.0f / numEmittedPhotons;
int delta = numEmittedPhotons / photonThreads.Length;
photonCounter = 0;
SunflowSharp.Systems.Timer photonTimer = new SunflowSharp.Systems.Timer();
photonTimer.start();
for (int i = 0; i < photonThreads.Length; i++)
{
int threadID = i;
int start = threadID * delta;
int end = (threadID == (photonThreads.Length - 1)) ? numEmittedPhotons : (threadID + 1) * delta;
photonThreads[i] = new Thread(new ThreadStart(new CalculatePhotons(start, end, this, seed, histogram, scale, map, lockObj).Run));
photonThreads[i].Priority = scene.getThreadPriority();
photonThreads[i].Start();
}
for (int i = 0; i < photonThreads.Length; i++)
{
try
{
photonThreads[i].Join();
}
catch (Exception e)
{
UI.printError(UI.Module.LIGHT, "Photon thread {0} of {1} was interrupted", i + 1, photonThreads.Length);
return false;
}
}
if (UI.taskCanceled())
{
UI.taskStop(); // shut down task cleanly
return false;
}
photonTimer.end();
UI.taskStop();
UI.printInfo(UI.Module.LIGHT, "Tracing time for {0} photons: {1}", type, photonTimer.ToString());
map.init();
return true;
}
public bool calculatePhotons(PhotonStore map, string type, int seed)
{
if (map == null)
{
return(true);
}
if (lights.Length == 0)
{
UI.printError(UI.Module.LIGHT, "Unable to trace {0} photons, no lights in scene", type);
return(false);
}
float[] histogram = new float[lights.Length];
histogram[0] = lights[0].getPower();
for (int i = 1; i < lights.Length; i++)
{
histogram[i] = histogram[i - 1] + lights[i].getPower();
}
UI.printInfo(UI.Module.LIGHT, "Tracing %s photons ...", type);
int numEmittedPhotons = map.numEmit();
if (numEmittedPhotons <= 0 || histogram[histogram.Length - 1] <= 0)
{
UI.printError(UI.Module.LIGHT, "Photon mapping enabled, but no {0} photons to emit", type);
return(false);
}
map.prepare(scene.getBounds());
UI.taskStart("Tracing " + type + " photons", 0, numEmittedPhotons);
Thread[] photonThreads = new Thread[scene.getThreads()];
float scale = 1.0f / numEmittedPhotons;
int delta = numEmittedPhotons / photonThreads.Length;
photonCounter = 0;
SunflowSharp.Systems.Timer photonTimer = new SunflowSharp.Systems.Timer();
photonTimer.start();
for (int i = 0; i < photonThreads.Length; i++)
{
int threadID = i;
int start = threadID * delta;
int end = (threadID == (photonThreads.Length - 1)) ? numEmittedPhotons : (threadID + 1) * delta;
photonThreads[i] = new Thread(new ThreadStart(new CalculatePhotons(start, end, this, seed, histogram, scale, map, lockObj).Run));
photonThreads[i].Priority = scene.getThreadPriority();
photonThreads[i].Start();
}
for (int i = 0; i < photonThreads.Length; i++)
{
try
{
photonThreads[i].Join();
}
catch (Exception e)
{
UI.printError(UI.Module.LIGHT, "Photon thread {0} of {1} was interrupted", i + 1, photonThreads.Length);
return(false);
}
}
if (UI.taskCanceled())
{
UI.taskStop(); // shut down task cleanly
return(false);
}
photonTimer.end();
UI.taskStop();
UI.printInfo(UI.Module.LIGHT, "Tracing time for {0} photons: {1}", type, photonTimer.ToString());
map.init();
return(true);
}
