prefuse.util.force
Class DragForce

java.lang.Object
  prefuse.util.force.AbstractForce
      prefuse.util.force.DragForce

All Implemented Interfaces:

Force

public class DragForce
extends AbstractForce

Implements a viscosity/drag force to help stabilize items.

Author:

jeffrey heer

Field Summary

static float	DEFAULT_DRAG_COEFF
static float	DEFAULT_MAX_DRAG_COEFF
static float	DEFAULT_MIN_DRAG_COEFF
static int	DRAG_COEFF

Fields inherited from class prefuse.util.force.AbstractForce

maxValues, minValues, params

Constructor Summary

DragForce()
Create a new DragForce with default drag co-efficient.

DragForce(float dragCoeff)
Create a new DragForce.

Method Summary

void	getForce(ForceItem item) Throws an UnsupportedOperationException.
protected java.lang.String[]	getParameterNames()
boolean	isItemForce() Returns true.

Methods inherited from class prefuse.util.force.AbstractForce

getForce, getMaxValue, getMinValue, getParameter, getParameterCount, getParameterName, init, isSpringForce, setMaxValue, setMinValue, setParameter

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_DRAG_COEFF

public static final float DEFAULT_DRAG_COEFF

See Also:

Constant Field Values

DEFAULT_MIN_DRAG_COEFF

public static final float DEFAULT_MIN_DRAG_COEFF

See Also:

Constant Field Values

DEFAULT_MAX_DRAG_COEFF

public static final float DEFAULT_MAX_DRAG_COEFF

See Also:

Constant Field Values

DRAG_COEFF

public static final int DRAG_COEFF

See Also:

Constant Field Values

Constructor Detail

DragForce

public DragForce(float dragCoeff)

Create a new DragForce.

Parameters:

dragCoeff - the drag co-efficient

DragForce

public DragForce()

Create a new DragForce with default drag co-efficient.

Method Detail

isItemForce

public boolean isItemForce()

Returns true.

Specified by:

isItemForce in interface Force

Overrides:

isItemForce in class AbstractForce

Returns:

true if this force function processes Force instances

See Also:

Force.isItemForce()

getParameterNames

protected java.lang.String[] getParameterNames()

Specified by:

getParameterNames in class AbstractForce

See Also:

AbstractForce.getParameterNames()

getForce

public void getForce(ForceItem item)

Description copied from class: AbstractForce

Throws an UnsupportedOperationException.

Specified by:

getForce in interface Force

Overrides:

getForce in class AbstractForce

Parameters:

item - the ForceItem on which to compute updated forces

See Also:

Force.getForce(prefuse.util.force.ForceItem)