Class TriangleSampler.TriangleSampler2D
- java.lang.Object
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- org.apache.commons.rng.sampling.shape.TriangleSampler
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- org.apache.commons.rng.sampling.shape.TriangleSampler.TriangleSampler2D
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- All Implemented Interfaces:
ObjectSampler<double[]>
,SharedStateObjectSampler<double[]>
,SharedStateSampler<SharedStateObjectSampler<double[]>>
- Enclosing class:
- TriangleSampler
private static final class TriangleSampler.TriangleSampler2D extends TriangleSampler
Sample uniformly from a triangle in 2D. This is an non-array based specialisation ofTriangleSampler.TriangleSamplerND
for performance.
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Field Summary
Fields Modifier and Type Field Description private double
ax
The x component of vertex a.private double
ay
The y component of vertex a.private double
bx
The x component of vertex b.private double
by
The y component of vertex b.private double
cx
The x component of vertex c.private double
cy
The y component of vertex c.
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Constructor Summary
Constructors Constructor Description TriangleSampler2D(UniformRandomProvider rng, double[] a, double[] b, double[] c)
TriangleSampler2D(UniformRandomProvider rng, TriangleSampler.TriangleSampler2D source)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description double[]
createSample(double p1msmt, double s, double t)
Creates the sample given the random variatess
andt
in the interval[0, 1]
ands + t <= 1
.TriangleSampler
withUniformRandomProvider(UniformRandomProvider rng)
Create a new instance of the sampler with the same underlying state using the given uniform random provider as the source of randomness.-
Methods inherited from class org.apache.commons.rng.sampling.shape.TriangleSampler
of, sample
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.commons.rng.sampling.ObjectSampler
samples, samples
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Field Detail
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ax
private final double ax
The x component of vertex a.
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ay
private final double ay
The y component of vertex a.
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bx
private final double bx
The x component of vertex b.
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by
private final double by
The y component of vertex b.
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cx
private final double cx
The x component of vertex c.
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cy
private final double cy
The y component of vertex c.
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Constructor Detail
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TriangleSampler2D
TriangleSampler2D(UniformRandomProvider rng, double[] a, double[] b, double[] c)
- Parameters:
rng
- Source of randomness.a
- The first vertex.b
- The second vertex.c
- The third vertex.
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TriangleSampler2D
TriangleSampler2D(UniformRandomProvider rng, TriangleSampler.TriangleSampler2D source)
- Parameters:
rng
- Generator of uniformly distributed random numberssource
- Source to copy.
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Method Detail
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createSample
public double[] createSample(double p1msmt, double s, double t)
Description copied from class:TriangleSampler
Creates the sample given the random variatess
andt
in the interval[0, 1]
ands + t <= 1
. The sum1 - s - t
is provided. The sample can be obtained from the triangle abc using:p = a(1 - s - t) + sb + tc
- Specified by:
createSample
in classTriangleSampler
- Parameters:
p1msmt
- plus 1 minus s minus t (1 - s - t)s
- the first variate st
- the second variate t- Returns:
- the sample
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withUniformRandomProvider
public TriangleSampler withUniformRandomProvider(UniformRandomProvider rng)
Description copied from class:TriangleSampler
Create a new instance of the sampler with the same underlying state using the given uniform random provider as the source of randomness.- Specified by:
withUniformRandomProvider
in interfaceSharedStateSampler<SharedStateObjectSampler<double[]>>
- Specified by:
withUniformRandomProvider
in classTriangleSampler
- Parameters:
rng
- Generator of uniformly distributed random numbers.- Returns:
- the sampler
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