toxi.physics
Class ParticlePath

java.lang.Object
  toxi.geom.Spline3D
      toxi.physics.ParticlePath

public class ParticlePath
extends toxi.geom.Spline3D

This class is used as a builder to dynamically construct a ParticleString following a given spline path, sampled at a fixed frequency/step distance. This functionality is needed especially when working with various obstacles/mechanic constraints which the string should flow/wrap around.

Field Summary

Fields inherited from class toxi.geom.Spline3D

bernstein, bi, coeffA, DEFAULT_RES, DEFAULT_TIGHTNESS, delta, pointList, vertices

Constructor Summary

ParticlePath()

ParticlePath(java.util.List<toxi.geom.Vec3D> points)

Method Summary

java.util.List<VerletParticle>

createParticles(VerletPhysics physics, int subDiv, float step, float mass) Creates particles along the spline at the fixed interval given.

Methods inherited from class toxi.geom.Spline3D

add, add, computeVertices, getDecimatedVertices, getDecimatedVertices, getEstimatedArcLength, getNumPoints, getPointList, getTightness, setPointList, setTightness, updateCoefficients

Methods inherited from class java.lang.Object

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

Constructor Detail

ParticlePath

public ParticlePath()

ParticlePath

public ParticlePath(java.util.List<toxi.geom.Vec3D> points)

Method Detail

createParticles

public java.util.List<VerletParticle> createParticles(VerletPhysics physics,
                                                      int subDiv,
                                                      float step,
                                                      float mass)

Creates particles along the spline at the fixed interval given. The precision of this interval will largely depend on the number of subdivision vertices created, but can be adjusted via the related parameter.

Parameters:

physics - physics instance

subDiv - number spline segment subdivisions

step - desired rest length between particles

mass - desired particle mass

Returns:

list of particles