toxi.physics2d
Class ParticleString2D

java.lang.Object
  toxi.physics2d.ParticleString2D

public class ParticleString2D
extends java.lang.Object

Utility builder/grouping/management class to connect a set of particles into a physical string/thread. Custom spring types can be used by subclassing this class and overwriting the createSpring(VerletParticle2D, VerletParticle2D, float, float) method.

Field Summary

java.util.List<VerletSpring2D>	links
java.util.List<VerletParticle2D>	particles

Constructor Summary

ParticleString2D(VerletPhysics2D physics, java.util.List<VerletParticle2D> plist, float strength)
Takes a list of already created particles connects them into a continuous string using springs.

ParticleString2D(VerletPhysics2D physics, toxi.geom.Vec2D pos, toxi.geom.Vec2D step, int num, float mass, float strength)
Creates a number of particles along a line and connects them into a string using springs.

Method Summary

void	clear() Removes the entire string from the physics simulation, incl.
VerletParticle2D	getHead() Returns the first particle of the string.
int	getNumParticles() Returns number of particles of the string.
VerletParticle2D	getTail() Returns last particle of the string.

Methods inherited from class java.lang.Object

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

Field Detail

particles

public java.util.List<VerletParticle2D> particles

links

public java.util.List<VerletSpring2D> links

Constructor Detail

ParticleString2D

public ParticleString2D(VerletPhysics2D physics,
                        java.util.List<VerletParticle2D> plist,
                        float strength)

Takes a list of already created particles connects them into a continuous string using springs.

Parameters:

physics - physics engine instance

plist - particle list

strength - spring strength

ParticleString2D

public ParticleString2D(VerletPhysics2D physics,
                        toxi.geom.Vec2D pos,
                        toxi.geom.Vec2D step,
                        int num,
                        float mass,
                        float strength)

Creates a number of particles along a line and connects them into a string using springs.

Parameters:

physics - physics engine

pos - start position

step - step direction & distance between successive particles

num - number of particles

mass - particle mass

strength - spring strength

Method Detail

clear

public void clear()

Removes the entire string from the physics simulation, incl. all of its particles & springs.

getHead

public VerletParticle2D getHead()

Returns the first particle of the string.

Returns:

first particle

getNumParticles

public int getNumParticles()

Returns number of particles of the string.

Returns:

particle count

getTail

public VerletParticle2D getTail()

Returns last particle of the string.

Returns:

last particle