Examples of edu.uci.ics.jung.visualization.transform.LensTransformer

Package edu.uci.ics.jung.visualization.transform

Examples of edu.uci.ics.jung.visualization.transform.LensTransformer

edu.uci.ics.jung.visualization.transform.LensTransformer
LensTransformer wraps a MutableAffineTransformer and modifies the transform and inverseTransform methods so that they create a projection of the graph points within an elliptical lens. LensTransformer uses an affine transform to cause translation, scaling, rotation, and shearing while applying a possibly non-affine filter in its transform and inverseTransform methods. @author Tom Nelson

     * @param transformer
     * @param point
     */
    private void setViewCenter(MutableTransformer transformer, Point2D point) {
        if(transformer instanceof LensTransformer) {
            LensTransformer ht =
                (LensTransformer)transformer;
            ht.setViewCenter(point);
        }
    }

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     * @param transformer
     * @param point
     */
    private void setViewRadius(MutableTransformer transformer, Point2D point) {
        if(transformer instanceof LensTransformer) {
            LensTransformer ht =
                (LensTransformer)transformer;
            double distanceFromCenter = ht.getDistanceFromCenter(point);
            ht.setViewRadius(distanceFromCenter+edgeOffset);
        }
    }

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     * @param transformer
     * @param point
     */
    private void testViewCenter(MutableTransformer transformer, Point2D point) {
        if(transformer instanceof LensTransformer) {
            LensTransformer ht =
                (LensTransformer)transformer;
            double distanceFromCenter = ht.getDistanceFromCenter(point);
            if(distanceFromCenter < 10) {
                ht.setViewCenter(point);
                dragOnLens = true;
            } else if(Math.abs(distanceFromCenter - ht.getViewRadius()) < 10) {
                edgeOffset = ht.getViewRadius() - distanceFromCenter;
                ht.setViewRadius(distanceFromCenter+edgeOffset);
                dragOnEdge = true;
            }
        }
    }

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        return (e.getModifiers() & modifiers) != 0;
    }


    private void changeMagnification(MutableTransformer transformer, float delta) {
        if(transformer instanceof LensTransformer) {
            LensTransformer ht = (LensTransformer)transformer;
            float magnification = ht.getMagnification() + delta;
            magnification = Math.max(floor, magnification);
            magnification = Math.min(magnification, ceiling);
            ht.setMagnification(magnification);
        }
    }

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        float y2 = (float) p2.getY();
        
        float flatness = 0;
        MutableTransformer transformer = rc.getMultiLayerTransformer().getTransformer(Layer.VIEW);
        if(transformer instanceof LensTransformer) {
            LensTransformer ht = (LensTransformer)transformer;
            RectangularShape lensShape = ht.getLensShape();
            if(lensShape.contains(x1,y1) || lensShape.contains(x2,y2)) {
                flatness = .05f;
            }
        }

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Related Classes of edu.uci.ics.jung.visualization.transform.LensTransformer

edu.uci.ics.jung.visualization.control.LensMagnificationGraphMousePlugin

edu.uci.ics.jung.visualization.control.LensTranslatingGraphMousePlugin

edu.uci.ics.jung.visualization.renderers.ReshapingEdgeRenderer

java.awt.Dimension

java.awt.geom.AffineTransform

java.awt.geom.Rectangle2D

java.awt.geom.Point2D

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