toxi.physics2d
Class ParticlePath2D

java.lang.Object
  toxi.geom.Spline2D
      toxi.physics2d.ParticlePath2D

public class ParticlePath2D
extends toxi.geom.Spline2D

This class is used as a builder to dynamically construct a ParticleString2D 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.Spline2D

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

Constructor Summary

ParticlePath2D()

ParticlePath2D(java.util.List<toxi.geom.Vec2D> points)

Method Summary

java.util.List<VerletParticle2D>

createParticles(VerletPhysics2D physics, int subDiv, float step, float mass) Creates particles along the spline at the fixed interval given.

Methods inherited from class toxi.geom.Spline2D

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

ParticlePath2D

public ParticlePath2D()

ParticlePath2D

public ParticlePath2D(java.util.List<toxi.geom.Vec2D> points)

Method Detail

createParticles

public java.util.List<VerletParticle2D> createParticles(VerletPhysics2D 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