unipg.gila.layout.force

Class Force

java.lang.Object

unipg.gila.layout.force.Force

Direct Known Subclasses:

FR, LinLog

public abstract class Force
extends java.lang.Object

This abstract class models the behaviour of the different Force models.

Author:

Alessio Arleo

Constructor Summary

Constructors

Constructor and Description
Force()

Method Summary

Methods

Modifier and Type	Method and Description
abstract float[]	computeAttractiveForce(float deltaX, float deltaY, float distance, float squareDistance, int v1Deg, int v2Deg) This method computes the attractive force between two vertices.
abstract float[]	computeRepulsiveForce(float deltaX, float deltaY, float distance, float squareDistance, int v1Deg, int v2Deg) This method computes the repulsive force module between two vertices.
abstract void	generateForce(java.lang.String[] args, float k) This method builds the force instance with the given arguments and the optimal spring length.

Methods inherited from class java.lang.Object

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

Constructor Detail

Force

public Force()

Method Detail

computeAttractiveForce

public abstract float[] computeAttractiveForce(float deltaX,
                             float deltaY,
                             float distance,
                             float squareDistance,
                             int v1Deg,
                             int v2Deg)

This method computes the attractive force between two vertices. It returns an array of floats representing the X and Y components of the force.

Parameters:

deltaX - The vertices distance on the X axis.

deltaY - The vertices distance on the Y axis.

distance - The distance module.

squareDistance - The distance square module.

v1Deg - The degree of the first vertex.

v2Deg - The degree of the second vertex.

Returns:

The attractive force module exerted by v2 on v1.

computeRepulsiveForce

public abstract float[] computeRepulsiveForce(float deltaX,
                            float deltaY,
                            float distance,
                            float squareDistance,
                            int v1Deg,
                            int v2Deg)

This method computes the repulsive force module between two vertices. It returns an array of floats representing the X and Y components of the force.

Parameters:

deltaX - The vertices distance on the X axis.

deltaY - The vertices distance on the Y axis.

distance - The distance module.

squareDistance - The distance square module.

v1Deg - The degree of the first vertex.

v2Deg - The degree of the second vertex.

Returns:

The repulsive force module exerted by v2 on v1.

generateForce

public abstract void generateForce(java.lang.String[] args,
                 float k)

This method builds the force instance with the given arguments and the optimal spring length.

Parameters:

args - The arguments.

k - The optimal spring length.