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## 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

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