import edu.uci.ics.jung.visualization.FourPassImageShaper; //导入依赖的package包/类
/**
    * get the shape from the image. If not available, get
    * the shape from the delegate VertexShapeFunction
    */
   public Shape getShape(Vertex v) {
	Icon icon = getIcon(v);
	if (icon != null && icon instanceof ImageIcon) {
		Image image = ((ImageIcon) icon).getImage();
		Shape shape = (Shape) shapeMap.get(image);
		if (shape == null) {
		    shape = FourPassImageShaper.getShape(image, 30);
		    if(shape.getBounds().getWidth() > 0 && 
		            shape.getBounds().getHeight() > 0) {
                   // don't cache a zero-sized shape, wait for the image
		       // to be ready
                   int width = image.getWidth(null);
                   int height = image.getHeight(null);
                   AffineTransform transform = AffineTransform
					.getTranslateInstance(-width / 2, -height / 2);
                   shape = transform.createTransformedShape(shape);
                   shapeMap.put(image, shape);
               }
		}
		return shape;
	} else {
		return delegate.getShape(v);
	}

}
 

import edu.uci.ics.jung.visualization.FourPassImageShaper; //导入依赖的package包/类
public Shape getShape(Vertex v) {
	Icon icon = (Icon) iconMap.get(v);

	if (icon != null && icon instanceof ImageIcon) {

		Image image = ((ImageIcon) icon).getImage();

		Shape shape = (Shape) shapeMap.get(image);
		if (shape == null) {
			if (shapeImages) {
				shape = FourPassImageShaper.getShape(image, 30);
			} else {
				shape = new Rectangle2D.Float(0, 0, 
						image.getWidth(null), image.getHeight(null));
			}
                  if(shape.getBounds().getWidth() > 0 && 
                          shape.getBounds().getHeight() > 0) {
                      int width = image.getWidth(null);
                      int height = image.getHeight(null);
                      AffineTransform transform = 
                          AffineTransform.getTranslateInstance(-width / 2, -height / 2);
                      shape = transform.createTransformedShape(shape);
                      shapeMap.put(image, shape);
                  }
		}
		return shape;
	} else {
		return delegate.getShape(v);
	}
}