private ShadingState(ShadingState previous, IntersectionState istate, Ray r, int i, int d)
{
this.r = r;
this.istate = istate;
this.i = i;
this.d = d;
this.instance = istate.instance; // local copy
this.primitiveID = istate.id;
this.hitU = istate.u;
this.hitV = istate.v;
if (previous == null)
{
diffuseDepth = 0;
reflectionDepth = 0;
refractionDepth = 0;
}
else
{
diffuseDepth = previous.diffuseDepth;
reflectionDepth = previous.reflectionDepth;
refractionDepth = previous.refractionDepth;
this.server = previous.server;
this.map = previous.map;
this.rx = previous.rx;
this.ry = previous.ry;
this.i += previous.i;
this.d += previous.d;
}
behind = false;
cosND = float.NaN;
includeLights = includeSpecular = true;
qmcD0I = QMC.halton(this.d, this.i);
qmcD1I = QMC.halton(this.d + 1, this.i);
result = null;
}
public CalculatePhotons(int start, int end, LightServer server, int seed, float[] histogram, float scale, PhotonStore map, object lockObj)
{
this.start = start;
this.end = end;
this.server = server;
this.seed = seed;
this.histogram = histogram;
this.lockObj = lockObj;
this.scale = scale;
this.map = map;
this.lockObj = lockObj;
}
private ShadingState(ShadingState previous, IntersectionState istate, Ray r, int i, int d)
{
this.r = r;
this.istate = istate;
this.i = i;
this.d = d;
time = istate.time;
instance = istate.instance; // local copy
primitiveID = istate.id;
hitU = istate.u;
hitV = istate.v;
hitW = istate.w;
// get matrices for current time
o2w = instance.getObjectToWorld(time);
w2o = instance.getWorldToObject(time);
if (previous == null)
{
diffuseDepth = 0;
reflectionDepth = 0;
refractionDepth = 0;
}
else
{
diffuseDepth = previous.diffuseDepth;
reflectionDepth = previous.reflectionDepth;
refractionDepth = previous.refractionDepth;
server = previous.server;
map = previous.map;
rx = previous.rx;
ry = previous.ry;
this.i += previous.i;
this.d += previous.d;
}
behind = false;
cosND = float.NaN;
includeLights = includeSpecular = true;
qmcD0I = QMC.halton(this.d, this.i);
qmcD1I = QMC.halton(this.d + 1, this.i);
result = null;
bias = 0.001f;
}
public CalculatePhotons(int start, int end, LightServer server, int seed, float[] histogram, float scale, PhotonStore map, object lockObj)
{
this.start = start;
this.end = end;
this.server = server;
this.seed = seed;
this.histogram = histogram;
this.lockObj = lockObj;
this.scale = scale;
this.map = map;
this.lockObj = lockObj;
}
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 static ShadingState createPhotonState(Ray r, IntersectionState istate, int i, PhotonStore map, LightServer server)
{
ShadingState s = new ShadingState(null, istate, r, i, 4);
s.server = server;
s.map = map;
return(s);
}
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);
}
/**
* Create a photon map as prescribed by the given {@link PhotonStore}.
*
* @param map object that will recieve shot photons
* @param type type of photons being shot
* @param seed QMC seed parameter
* @return <code>true</code> upon success
*/
public bool calculatePhotons(PhotonStore map, string type, int seed)
{
return lightServer.calculatePhotons(map, type, seed);
}
/**
* Create a photon map as prescribed by the given {@link PhotonStore}.
*
* @param map object that will recieve shot photons
* @param type type of photons being shot
* @param seed QMC seed parameter
* @return <code>true</code> upon success
*/
public bool calculatePhotons(PhotonStore map, string type, int seed, Options options)
{
return(lightServer.calculatePhotons(map, type, seed, options));
}
