edu.uci.ics.jung.visualization
Class FourPassImageShaper

java.lang.Object
  edu.uci.ics.jung.visualization.FourPassImageShaper

public class FourPassImageShaper
extends Object

Provides factory methods that, given a BufferedImage, an Image, or the fileName of an image, will return a java.awt.Shape that is the contiguous traced outline of the opaque part of the image. This could be used to define an image for use in a Vertex, where the shape used for picking and edge-arrow placement follows the opaque part of an image that has a transparent background. The methods try to detect lines in order to minimize points in the path

Author:

Tom Nelson

Constructor Summary

FourPassImageShaper()

Method Summary

static Shape	getShape(BufferedImage image)
static Shape	getShape(BufferedImage image, int max) Given an image, possibly with a transparent background, return the Shape of the opaque part of the image If the image is larger than max in either direction, scale the image down to max-by-max, do the trace (on fewer points) then scale the resulting shape back up to the size of the original image.
static Shape	getShape(Image image) Given an image, possibly with a transparent background, return the Shape of the opaque part of the image
static Shape	getShape(Image image, int max)
static Shape	getShape(String fileName) given the fileName of an image, possibly with a transparent background, return the Shape of the opaque part of the image
static Shape	getShape(String fileName, int max)

Methods inherited from class java.lang.Object

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

Constructor Detail

FourPassImageShaper

public FourPassImageShaper()

Method Detail

getShape

public static Shape getShape(String fileName)

given the fileName of an image, possibly with a transparent background, return the Shape of the opaque part of the image

Parameters:

fileName - name of the image, loaded from the classpath

Returns:

the Shape

getShape

public static Shape getShape(String fileName,
                             int max)

getShape

public static Shape getShape(Image image)

Given an image, possibly with a transparent background, return the Shape of the opaque part of the image

Parameters:

image -

Returns:

the Shape

getShape

public static Shape getShape(Image image,
                             int max)

getShape

public static Shape getShape(BufferedImage image,
                             int max)

Given an image, possibly with a transparent background, return the Shape of the opaque part of the image If the image is larger than max in either direction, scale the image down to max-by-max, do the trace (on fewer points) then scale the resulting shape back up to the size of the original image.

Parameters:

image - the image to trace

max - used to restrict number of points in the resulting shape

Returns:

the Shape

getShape

public static Shape getShape(BufferedImage image)