ptolemy.vergil.actor

Class KielerLayoutUtil

java.lang.Object

ptolemy.vergil.actor.KielerLayoutUtil

public final class KielerLayoutUtil
extends java.lang.Object

Static helper class for the KIELER classes implementing connector behavior, i.e. special edge routing mechanisms.

Since:

Ptolemy II 11.0

Version:

$Id$

Author:

Ulf Rueegg

Constructor Summary

Constructors

Constructor and Description
KielerLayoutUtil()

Method Summary

Modifier and Type	Method and Description
static java.awt.geom.Point2D	getCenterPoint(Site site) Get the center point of a Perimeter Site.
static java.awt.geom.Point2D[]	getHeadTailPoints(Connector connector, java.util.List<java.awt.geom.Point2D> bendPoints) Get the starting and ending points of a connector.
static Locatable	getLocation(NamedObj namedObj) Find a location for the given object.
static java.awt.geom.Point2D	getLocationPoint(Locatable locatable) Retrieve the actual position from a locatable instance.
static java.awt.geom.Point2D	getLocationPoint(NamedObj namedObj) Get the location given by the location attribute of the given input object.
static double	getNormal(java.awt.geom.Point2D origin, java.awt.geom.Point2D other) Get the angle in radians from the origin to the other point.

Methods inherited from class java.lang.Object

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

Constructor Detail

KielerLayoutUtil

public KielerLayoutUtil()

Method Detail

getCenterPoint

public static java.awt.geom.Point2D getCenterPoint(Site site)

Get the center point of a Perimeter Site. Copied the idea from PerimeterSite.getPoint(double).

Parameters:

site - the site

Returns:

the center point of the shape that corresponds to the site

getHeadTailPoints

public static java.awt.geom.Point2D[] getHeadTailPoints(Connector connector,
                                                        java.util.List<java.awt.geom.Point2D> bendPoints)

Get the starting and ending points of a connector. Copied some code from BasicManhattanRouter.routeManhattan(diva.canvas.connector.ManhattanConnector).

Parameters:

connector - The connector.

bendPoints - a list of bendpoints to determine the anchor point on the site

Returns:

the anchor points at the start and end of the connection, i.e. a Point2D array of size 2

getNormal

public static double getNormal(java.awt.geom.Point2D origin,
                               java.awt.geom.Point2D other)

Get the angle in radians from the origin to the other point.

Parameters:

origin - the original point

other - the other point

Returns:

angle in radians

getLocation

public static Locatable getLocation(NamedObj namedObj)

Find a location for the given object.

Parameters:

namedObj - a model object

Returns:

the object's location, or null if there is no location

getLocationPoint

public static java.awt.geom.Point2D getLocationPoint(NamedObj namedObj)

Get the location given by the location attribute of the given input object. If the Ptolemy object has no location attribute, return double zero.

Parameters:

namedObj - The Ptolemy object for which the location should be retrieved.

Returns:

A vector corresponding to the location (x and y) of the object. Will return a zero vector if no location attribute is set for the object.

getLocationPoint

public static java.awt.geom.Point2D getLocationPoint(Locatable locatable)

Retrieve the actual position from a locatable instance.

Parameters:

locatable - a locatable

Returns:

the actual position, or null if none is found