/**
* Java Modular Image Synthesis Toolkit (JMIST)
* Copyright (C) 2008-2013 Bradley W. Kimmel
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package ca.eandb.jmist.framework.measurement;
import ca.eandb.jmist.framework.Random;
import ca.eandb.jmist.framework.SurfacePointGeometry;
import ca.eandb.jmist.framework.random.SimpleRandom;
import ca.eandb.jmist.framework.scatter.SurfaceScatterer;
import ca.eandb.jmist.math.SphericalCoordinates;
import ca.eandb.jmist.math.Vector3;
import ca.eandb.util.progress.DummyProgressMonitor;
import ca.eandb.util.progress.ProgressMonitor;
/**
* @author Brad Kimmel
*
*/
public final class Photometer {
public Photometer(CollectorSphere collectorSphere) {
this.collectorSphere = collectorSphere;
this.sensorArray = new IntegerSensorArray(collectorSphere);
}
public void reset() {
this.sensorArray.reset();
}
public void setSpecimen(SurfaceScatterer specimen) {
this.specimen = specimen;
}
public void setIncidentAngle(SphericalCoordinates incident) {
this.incident = incident;
this.in = incident.unit().opposite().toCartesian();
}
public void setWavelength(double wavelength) {
this.wavelength = wavelength;
}
public SurfaceScatterer getSpecimen() {
return this.specimen;
}
public SphericalCoordinates getIncidentAngle() {
return this.incident;
}
public double getWavelength() {
return this.wavelength;
}
public CollectorSphere getCollectorSphere() {
return this.collectorSphere;
}
public IntegerSensorArray getSensorArray() {
return this.sensorArray;
}
public void castPhoton() {
this.castPhotons(1);
}
public void castPhotons(long n) {
this.castPhotons(n, DummyProgressMonitor.getInstance());
}
public void castPhotons(long n, ProgressMonitor monitor) {
this.castPhotons(n, monitor, DEFAULT_PROGRESS_INTERVAL);
}
public void castPhotons(long n, ProgressMonitor monitor, long progressInterval) {
long untilCallback = 0;
Random rng = new SimpleRandom();
for (int i = 0; i < n; i++) {
if (--untilCallback <= 0) {
double progress = (double) i / (double) n;
if (!monitor.notifyProgress(progress)) {
monitor.notifyCancelled();
return;
}
untilCallback = progressInterval;
}
Vector3 v = specimen.scatter(SurfacePointGeometry.STANDARD, in, false, wavelength, rng);
if (v != null) {
collectorSphere.record(v, sensorArray);
}
}
monitor.notifyProgress(1.0);
monitor.notifyComplete();
}
private final IntegerSensorArray sensorArray;
private final CollectorSphere collectorSphere;
private SurfaceScatterer specimen;
private SphericalCoordinates incident;
private Vector3 in;
private double wavelength;
private static final long DEFAULT_PROGRESS_INTERVAL = 1000;
}