toxi.volume
Class HashIsoSurface

java.lang.Object
  toxi.volume.HashIsoSurface

All Implemented Interfaces:

IsoSurface

public class HashIsoSurface
extends java.lang.Object
implements IsoSurface

HashMap based implementation of the IsoSurface interface. More memory efficient than ArrayIsoSurface and so better suited for very high-resolution volumes.

Field Summary

float

isoValue

Constructor Summary

HashIsoSurface(VolumetricSpace volume)
Creates a new instance using the expected default vertex density of 50%.

HashIsoSurface(VolumetricSpace volume, float density)
Creates a new instance using the given expected vertex density.

Method Summary

toxi.geom.mesh.Mesh3D	computeSurfaceMesh(toxi.geom.mesh.Mesh3D mesh, float iso) Computes the surface mesh for the given iso value.
void	reset() Resets mesh vertices to default positions and clears face index.
void	setExpectedDensity(float density)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

isoValue

public float isoValue

Constructor Detail

HashIsoSurface

public HashIsoSurface(VolumetricSpace volume)

Creates a new instance using the expected default vertex density of 50%.

Parameters:

volume -

See Also:

setExpectedDensity(float)

HashIsoSurface

public HashIsoSurface(VolumetricSpace volume,
                      float density)

Creates a new instance using the given expected vertex density.

Parameters:

volume -

See Also:

setExpectedDensity(float)

Method Detail

computeSurfaceMesh

public toxi.geom.mesh.Mesh3D computeSurfaceMesh(toxi.geom.mesh.Mesh3D mesh,
                                                float iso)

Description copied from interface: IsoSurface

Computes the surface mesh for the given iso value. An existing mesh container can be reused (will be cleared) or created automatically (if null). In the latter case a simple TriangleMesh instance is created.

Specified by:

computeSurfaceMesh in interface IsoSurface

Parameters:

mesh - existing mesh container or null

iso - surface iso value

Returns:

Mesh3D instance

reset

public void reset()

Resets mesh vertices to default positions and clears face index. Needs to be called inbetween successive calls to computeSurfaceMesh(Mesh3D, float).

Specified by:

reset in interface IsoSurface

setExpectedDensity

public void setExpectedDensity(float density)