com.bonzaiengine.physics

Class ConvexDecomposition.HACD

java.lang.Object

com.bonzaiengine.physics.ConvexDecomposition.HACD

Enclosing class:

ConvexDecomposition

public static final class ConvexDecomposition.HACD
extends java.lang.Object

HACD, Hierarchical Approximate Convex Decomposition

Copyright (c) 2011 Khaled Mamou (kmamou at gmail dot com)
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. The names of the contributors may not be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Field Summary

Fields

Modifier and Type	Field and Description
boolean	addExtraDistPoints If enabled, additional rays are considered to handle bowl-like shapes.
boolean	addFacePoints If enabled, an additional ray located at the center of each triangle pointing towards its normal is considered when computing the concavity of a non-float cluster.
float	connectDistance If the distance between two triangles, each belonging to a different connected components (CCs), is lower than the ConnectDist threshold, an additional edge connecting them is added to the dual graph.
float	maxConcavity Maximum allowed concavity.
int	minNumClusters Minimum number of convex-hulls to be generated.
int	numTrianglesDecimatedMesh Target number of triangles in the decimated mesh.

Constructor Summary

Constructors

Constructor and Description
HACD()

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
int	hashCode()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

minNumClusters

public int minNumClusters

Minimum number of convex-hulls to be generated.
Default: 1

maxConcavity

public float maxConcavity

Maximum allowed concavity.
Default: 100

addExtraDistPoints

public boolean addExtraDistPoints

If enabled, additional rays are considered to handle bowl-like shapes.
Default: true

addFacePoints

public boolean addFacePoints

If enabled, an additional ray located at the center of each triangle pointing towards its normal is considered when computing the concavity of a non-float cluster. The parameters was added to handle coarse meshes (ie with a low number of vertices).
Default: true

connectDistance

public float connectDistance

If the distance between two triangles, each belonging to a different connected components (CCs), is lower than the ConnectDist threshold, an additional edge connecting them is added to the dual graph. This parameter was added to handle meshes with multiple CCs.
Default value: 30

numTrianglesDecimatedMesh

public int numTrianglesDecimatedMesh

Target number of triangles in the decimated mesh. The decimation stage was added mainly to decrease the computational cost for dense meshes.
0 to turn off this feature
Mesh decimation algorithm: http://mgarland.org/research/thesis.html

Default value: 1000

Constructor Detail

HACD

public HACD()

Method Detail

equals

public final boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public final int hashCode()

Overrides:

hashCode in class java.lang.Object