Package toxi.physics3d

Class VerletSpring3D

java.lang.Object

toxi.physics3d.VerletSpring3D

Direct Known Subclasses:

VerletConstrainedSpring3D, VerletMinDistanceSpring3D

public class VerletSpring3D
extends Object

A spring class connecting two VerletParticles in space. Based on the configuration of the spring instance and that of the physics engine, the behaviour of the spring can vary between springy and stiff/stick like.

The simulation takes particle weights into account and can be configured to lock either particle in space in order to force the other one to move. This is sometimes handy for resolving collisions (currently outside the scope of this library).

See Also:

• VerletPhysics3D

Field Summary

Fields

Modifier and Type	Field	Description
VerletParticle3D	a	Spring end points / particles
VerletParticle3D	b	Spring end points / particles

Constructor Summary

Constructors

Constructor	Description
VerletSpring3D(VerletParticle3D a, VerletParticle3D b, float len, float str)

Method Summary

Modifier and Type	Method	Description
final float	getRestLength()
final float	getStrength()
VerletSpring3D	lockA(boolean s)	(Un)Locks the 1st end point of the spring.
VerletSpring3D	lockB(boolean s)	(Un)Locks the 2nd end point of the spring
VerletSpring3D	setRestLength(float len)
VerletSpring3D	setStrength(float strength)

Methods inherited from class java.lang.Object

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

Field Details

a

public VerletParticle3D a

Spring end points / particles

b

public VerletParticle3D b

Spring end points / particles

Constructor Details

VerletSpring3D

public VerletSpring3D(VerletParticle3D a,
 VerletParticle3D b,
 float len,
 float str)

Parameters:

a - 1st particle

b - 2nd particle

len - desired rest length

str - spring strength

Method Details

getRestLength

public final float getRestLength()

getStrength

public final float getStrength()

lockA

public VerletSpring3D lockA(boolean s)

(Un)Locks the 1st end point of the spring. NOTE: this acts purely within the scope of this spring instance and does NOT call VerletParticle3D.lock()

Parameters:

s -

Returns:

itself

lockB

public VerletSpring3D lockB(boolean s)

(Un)Locks the 2nd end point of the spring

Parameters:

s -

Returns:

itself

setRestLength

public VerletSpring3D setRestLength(float len)

setStrength

public VerletSpring3D setStrength(float strength)