toxi.geom.mesh.subdiv
Class DualDisplacementSubdivision

java.lang.Object
  toxi.geom.mesh.subdiv.SubdivisionStrategy
      toxi.geom.mesh.subdiv.DualDisplacementSubdivision

public class DualDisplacementSubdivision
extends SubdivisionStrategy

This subdivision strategy splits an edge in three equal parts using two split points at 33% and 66% of the edge. The split points themselves are being displaced, however, in the direction of the vector going from the configured reference point (often the mesh centroid is used) towards each split point. The displacement amount is configurable as fraction of the original edge length. So given that:

 S = edge split point
 R = reference point
 l = edge length
 a = displacement amplification factor
 
 S' = S + (S-R) * a * l
 

Field Summary

float	ampA
float	ampB
Vec3D	centroid

Fields inherited from class toxi.geom.mesh.subdiv.SubdivisionStrategy

DEFAULT_ORDERING

Constructor Summary

DualDisplacementSubdivision(Vec3D centroid, float ampA, float ampB)

Method Summary

java.util.List<Vec3D>

computeSplitPoints(WingedEdge edge) Computes a number of points on (or near) the given edge which are used for splitting the edge in smaller segments.

Methods inherited from class toxi.geom.mesh.subdiv.SubdivisionStrategy

getEdgeOrdering, setEdgeOrdering

Methods inherited from class java.lang.Object

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

Field Detail

centroid

public Vec3D centroid

ampA

public float ampA

ampB

public float ampB

Constructor Detail

DualDisplacementSubdivision

public DualDisplacementSubdivision(Vec3D centroid,
                                   float ampA,
                                   float ampB)

Method Detail

computeSplitPoints

public java.util.List<Vec3D> computeSplitPoints(WingedEdge edge)

Description copied from class: SubdivisionStrategy

Computes a number of points on (or near) the given edge which are used for splitting the edge in smaller segments.

Specified by:

computeSplitPoints in class SubdivisionStrategy

Parameters:

edge - edge to split

Returns:

list of split points