com.jme.math
Class Spring

java.lang.Object
  com.jme.math.Spring

public class Spring

extends java.lang.Object

Spring defines a single spring connecting two SpringNodes in a SpringSystem.

Version:

$Id: Spring.java,v 1.1 2004/11/29 21:24:56 renanse Exp $

Author:

Joshua Slack

Field Summary

SpringNode	node1 First node connected by this Spring.
SpringNode	node2 Second node connected by this Spring.

Constructor Summary

Spring(SpringNode node1, SpringNode node2, float restLength)
Public constructor.

Method Summary

float	getRestLength() Return the rest length of this Spring.
void	setRestLength(float restLength) Set the rest length of this Spring.
void	update() Updates the positions of the nodes connected by this spring based on spring force calculations.
void	updateTotalMassFromNodes() Computes the spring collective mass from the node using inverted masses for stability

Methods inherited from class java.lang.Object

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

Field Detail

node1

public SpringNode node1

First node connected by this Spring.

node2

public SpringNode node2

Second node connected by this Spring.

Constructor Detail

Spring

public Spring(SpringNode node1,
              SpringNode node2,
              float restLength)

Public constructor.

Parameters:

node1 - SpringNode

node2 - SpringNode

restLength - float

Method Detail

setRestLength

public void setRestLength(float restLength)

Set the rest length of this Spring. Also, calculates and sets the squared rest length field.

Parameters:

restLength - float

getRestLength

public float getRestLength()

Return the rest length of this Spring.

Returns:

float

updateTotalMassFromNodes

public void updateTotalMassFromNodes()

Computes the spring collective mass from the node using inverted masses for stability

update

public void update()

Updates the positions of the nodes connected by this spring based on spring force calculations. Relaxation method idea came from paper on physics system of Hitman game.