Description

Sampler for 3D domains (box, sphere, or cylinder) using Poisson Disk Sampling.

The sampler produces a set of points uniformly distributed in the specified domain such that no two points are closer than a specified distance.

2D domains can also be sampled (rectangle or circle), by setting the size of the domain in the z direction to 0.

Based on "Fast Poisson Disk Sampling in Arbitrary Dimensions" by Robert Bridson
http://people.cs.ubc.ca/~rbridson/docs/bridson-siggraph07-poissondisk.pdf

#include <ChUtilsSamplers.h>

Inheritance diagram for chrono::utils::ChPDSampler< T >:

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Collaboration diagram for chrono::utils::ChPDSampler< T >:

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Public Types
typedef Types< T >::PointVector	PointVector

typedef Types< T >::PointList	PointList

typedef ChSampler< T >::VolumeType	VolumeType

Public Types inherited from chrono::utils::ChSampler< T >
typedef Types< T >::PointVector	PointVector

Public Member Functions
	ChPDSampler (T separation, int pointsPerIteration=m_ppi_default)
	Construct a Poisson Disk sampler with specified minimum distance.

void	SetRandomEngineSeed (unsigned int seed)
	Set the current state of the random-number engine (default: 0).

Public Member Functions inherited from chrono::utils::ChSampler< T >
PointVector	SampleBox (const ChVector3< T > &center, const ChVector3< T > &halfDim)
	Return points sampled from the specified box volume.

PointVector	SampleSphere (const ChVector3< T > &center, T radius)
	Return points sampled from the specified spherical volume.

PointVector	SampleCylinderX (const ChVector3< T > &center, T radius, T halfHeight)
	Return points sampled from the specified X-aligned cylindrical volume.

PointVector	SampleCylinderY (const ChVector3< T > &center, T radius, T halfHeight)
	Return points sampled from the specified Y-aligned cylindrical volume.

PointVector	SampleCylinderZ (const ChVector3< T > &center, T radius, T halfHeight)
	Return points sampled from the specified Z-aligned cylindrical volume.

virtual T	GetSeparation () const
	Get the current value of the suggested minimum separation.

virtual void	SetSeparation (T separation)
	Change the suggested minimum separation for subsequent calls to Sample.

Additional Inherited Members
Protected Types inherited from chrono::utils::ChSampler< T >
enum	VolumeType { BOX, SPHERE, CYLINDER_X, CYLINDER_Y, CYLINDER_Z }

Protected Member Functions inherited from chrono::utils::ChSampler< T >
	ChSampler (T separation)

bool	accept (VolumeType t, const ChVector3< T > &p) const
	Utility function to check if a point is inside the sampling volume.

Protected Attributes inherited from chrono::utils::ChSampler< T >
T	m_separation
	inter-particle separation

T	m_fuzz
	fuzz value to account for roundoff error

ChVector3< T >	m_center
	center of the sampling volume

ChVector3< T >	m_size
	half dimensions of the bounding box of the sampling volume

The documentation for this class was generated from the following file:

Public Types