toxi.geom.mesh.subdiv
Class NormalDisplacementSubdivision

java.lang.Object
  toxi.geom.mesh.subdiv.SubdivisionStrategy
      toxi.geom.mesh.subdiv.DisplacementSubdivision
          toxi.geom.mesh.subdiv.NormalDisplacementSubdivision

public class NormalDisplacementSubdivision
extends DisplacementSubdivision

This subdivision strategy splits an edge in two equal halves at its mid point. The midpoint itself is being displaced, however, in the average direction of face normals associated with this edge. The displacement amount is configurable as fraction of the original edge length. So given that:

 M = edge midpoint
 N = averaged normal vector
 l = edge length
 a = displacement amplification factor
 
 M' = M + N * a * l
 

Field Summary

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

DEFAULT_ORDERING

Constructor Summary

NormalDisplacementSubdivision(float amp)

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.DisplacementSubdivision

getAmp, invertAmp, scaleAmp, setAmp

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

Constructor Detail

NormalDisplacementSubdivision

public NormalDisplacementSubdivision(float amp)

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