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java.lang.Objectcz.cuni.jagrlib.testing.MonteCarlo
public class MonteCarlo
Monte Carlo methods.
Field Summary | |
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protected static RandomJames |
rnd
Random number generator. |
Constructor Summary | |
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MonteCarlo()
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Method Summary | |
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static double |
balanceHeuristic(double f,
double pdfF,
double g,
double pdfG)
Balance heuristic. |
static double[] |
concentricSampleDisk(double ksi1,
double ksi2,
double[] result)
Samples concentric disk. |
static double[] |
cosineSampleHemisphere(double ksi1,
double ksi2,
double[] result)
Samples hemisphere according to the cosine-distribution. |
static double |
lerp(double t,
double v1,
double v2)
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static double |
powerHeuristic(double f,
double pdfF,
double g,
double pdfG)
Power heuristic. |
static double[] |
randomPointFromTriangle(double u,
double v,
double[] a,
double[] b,
double[] c,
double[] result)
Generates random point in the given triangle. |
static boolean |
sameHemisphere(double[] in,
double[] normal,
double[] out)
Are these directions on the same side of hemisphere. |
static double[] |
sampleSquare(double u,
double v,
double[] vertUR,
double[] vertUL,
double[] vertLL,
double[] vertLR,
double[] pos)
Generates point on the light. |
static double[] |
uniformSampleCone(double u,
double v,
double cosThetaMax,
double[] result)
Uniformly samples cone. |
static double[] |
uniformSampleHemisphere(double ksi1,
double ksi2,
double[] result)
Samples hemisphere uniformly. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected static final RandomJames rnd
Constructor Detail |
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public MonteCarlo()
Method Detail |
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public static double[] uniformSampleHemisphere(double ksi1, double ksi2, double[] result)
public static double[] cosineSampleHemisphere(double ksi1, double ksi2, double[] result)
public static double[] concentricSampleDisk(double ksi1, double ksi2, double[] result)
public static double[] sampleSquare(double u, double v, double[] vertUR, double[] vertUL, double[] vertLL, double[] vertLR, double[] pos)
public static final double[] randomPointFromTriangle(double u, double v, double[] a, double[] b, double[] c, double[] result)
a
- Triangle vertex A.b
- Triangle vertex B.c
- Triangle vertex C.result
- Pre-allocated result array (can be null
).
null
in case of failure.public static double[] uniformSampleCone(double u, double v, double cosThetaMax, double[] result)
u
- Uniform random number.v
- Uniform random number.cosThetaMax
- Maximal possible cosinus of angle theta.dir
- Pre-allocated array to hold result.
public static boolean sameHemisphere(double[] in, double[] normal, double[] out)
public static double lerp(double t, double v1, double v2)
public static double balanceHeuristic(double f, double pdfF, double g, double pdfG)
f
- Function f.pdfF
- Underlying probability density function of f.g
- Function g.pdfG
- Underlying probability density function of g.
public static double powerHeuristic(double f, double pdfF, double g, double pdfG)
f
- Function f.pdfF
- Underlying probability density function of f.g
- Function g.pdfG
- Underlying probability density function of g.
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