Package edu.uci.ics.jung.visualization
Class FourPassImageShaper
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- edu.uci.ics.jung.visualization.FourPassImageShaper
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public class FourPassImageShaper extends java.lang.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
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Constructor Summary
Constructors Constructor Description FourPassImageShaper()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.awt.Shape
getShape(java.awt.Image image)
Given an image, possibly with a transparent background, return the Shape of the opaque part of the imagestatic java.awt.Shape
getShape(java.awt.image.BufferedImage image)
static java.awt.Shape
getShape(java.awt.image.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 java.awt.Shape
getShape(java.awt.Image image, int max)
static java.awt.Shape
getShape(java.lang.String fileName)
given the fileName of an image, possibly with a transparent background, return the Shape of the opaque part of the imagestatic java.awt.Shape
getShape(java.lang.String fileName, int max)
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Method Detail
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getShape
public static java.awt.Shape getShape(java.lang.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
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getShape
public static java.awt.Shape getShape(java.lang.String fileName, int max)
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getShape
public static java.awt.Shape getShape(java.awt.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
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getShape
public static java.awt.Shape getShape(java.awt.Image image, int max)
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getShape
public static java.awt.Shape getShape(java.awt.image.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 tracemax
- used to restrict number of points in the resulting shape- Returns:
- the Shape
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getShape
public static java.awt.Shape getShape(java.awt.image.BufferedImage image)
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