Package edu.uci.ics.jung.visualization

Class PivotingImageShaper

  • public class PivotingImageShaper
extends java.lang.Object
    Provides Supplier 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

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) static int firstx
      the first x coordinate of the shape.
      (package private) static int sample
      the number of pixels to skip while sampling the images edges

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      private static java.awt.Shape bottomEdge​(java.awt.image.BufferedImage image, java.awt.geom.GeneralPath path, int start)
      trace the bottom of the image
      private static java.awt.geom.Point2D detectLine​(java.awt.geom.Point2D p1, java.awt.geom.Point2D p2, java.awt.geom.Point2D p, java.awt.geom.Line2D line, java.awt.geom.GeneralPath path)  
      static java.awt.Shape getShape​(java.awt.image.BufferedImage image)
      Given an image, possibly with a transparent background, return the Shape of the opaque part of the image
      private static java.awt.Shape leftEdge​(java.awt.image.BufferedImage image, java.awt.geom.GeneralPath path)
      trace the left side of the image
      private static java.awt.Shape rightEdge​(java.awt.image.BufferedImage image, java.awt.geom.GeneralPath path, int start)
      trace the right side of the image
      private static java.awt.Shape topEdge​(java.awt.image.BufferedImage image, java.awt.geom.GeneralPath path, int start)
      trace the top of the image

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • sample

        static int sample
        the number of pixels to skip while sampling the images edges

      • firstx

        static int firstx
        the first x coordinate of the shape. Used to discern when we are done

    • Constructor Detail

      • PivotingImageShaper

        public PivotingImageShaper()

    • Method Detail

      • getShape

        public static java.awt.Shape getShape​(java.awt.image.BufferedImage image)
        Given an image, possibly with a transparent background, return the Shape of the opaque part of the image
        Parameters:
        image - the image whose shape is being returned
        Returns:
        the Shape

      • detectLine

        private static java.awt.geom.Point2D detectLine​(java.awt.geom.Point2D p1,
                                                java.awt.geom.Point2D p2,
                                                java.awt.geom.Point2D p,
                                                java.awt.geom.Line2D line,
                                                java.awt.geom.GeneralPath path)

      • leftEdge

        private static java.awt.Shape leftEdge​(java.awt.image.BufferedImage image,
                                       java.awt.geom.GeneralPath path)
        trace the left side of the image
        Parameters:
        image -
        path -
        Returns:

      • bottomEdge

        private static java.awt.Shape bottomEdge​(java.awt.image.BufferedImage image,
                                         java.awt.geom.GeneralPath path,
                                         int start)
        trace the bottom of the image
        Parameters:
        image -
        path -
        start -
        Returns:

      • rightEdge

        private static java.awt.Shape rightEdge​(java.awt.image.BufferedImage image,
                                        java.awt.geom.GeneralPath path,
                                        int start)
        trace the right side of the image
        Parameters:
        image -
        path -
        start -
        Returns:

      • topEdge

        private static java.awt.Shape topEdge​(java.awt.image.BufferedImage image,
                                      java.awt.geom.GeneralPath path,
                                      int start)
        trace the top of the image
        Parameters:
        image -
        path -
        start -
        Returns: