Examples of org.jfree.chart.annotations.XYPointerAnnotation

org.jfree.chart.annotations.XYPointerAnnotation
An arrow and label that can be placed on an {@link XYPlot}. The arrow is drawn at a user-definable angle so that it points towards the (x, y) location for the annotation.
The arrow length (and its offset from the (x, y) location) is controlled by the tip radius and the base radius attributes. Imagine two circles around the (x, y) coordinate: the inner circle defined by the tip radius, and the outer circle defined by the base radius. Now, draw the arrow starting at some point on the outer circle (the point is determined by the angle), with the arrow tip being drawn at a corresponding point on the inner circle.

     * @param y pointer Y position
     * @param annotation annotation text
     * @param angle annotation line angle in degrees
     */
    public void addAnnotation(double x, double y, String annotation, float angle) {
        m_xyAnnotation = new XYPointerAnnotation(annotation,
                                                                   x,
                                                                   y,
                                                                   -angle * Math.PI / 180);
        m_xyAnnotation.setLabelOffset(m_xyAnnotation.getLabelOffset() * 2 + 10);

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    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {


        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1.equals(a2));


        a1 = new XYPointerAnnotation("Label2", 10.0, 20.0, Math.PI);
        assertFalse(a1.equals(a2));
        a2 = new XYPointerAnnotation("Label2", 10.0, 20.0, Math.PI);
        assertTrue(a1.equals(a2));


        a1.setX(11.0);
        assertFalse(a1.equals(a2));
        a2.setX(11.0);
        assertTrue(a1.equals(a2));


        a1.setY(22.0);
        assertFalse(a1.equals(a2));
        a2.setY(22.0);
        assertTrue(a1.equals(a2));


        //private double angle;
        a1.setAngle(Math.PI / 4.0);
        assertFalse(a1.equals(a2));
        a2.setAngle(Math.PI / 4.0);
        assertTrue(a1.equals(a2));


        //private double tipRadius;
        a1.setTipRadius(20.0);
        assertFalse(a1.equals(a2));
        a2.setTipRadius(20.0);
        assertTrue(a1.equals(a2));


        //private double baseRadius;
        a1.setBaseRadius(5.0);
        assertFalse(a1.equals(a2));
        a2.setBaseRadius(5.0);
        assertTrue(a1.equals(a2));


        //private double arrowLength;
        a1.setArrowLength(33.0);
        assertFalse(a1.equals(a2));
        a2.setArrowLength(33.0);
        assertTrue(a1.equals(a2));


        //private double arrowWidth;
        a1.setArrowWidth(9.0);
        assertFalse(a1.equals(a2));
        a2.setArrowWidth(9.0);
        assertTrue(a1.equals(a2));


        //private Stroke arrowStroke;
        Stroke stroke = new BasicStroke(1.5f);
        a1.setArrowStroke(stroke);
        assertFalse(a1.equals(a2));
        a2.setArrowStroke(stroke);
        assertTrue(a1.equals(a2));


        //private Paint arrowPaint;
        a1.setArrowPaint(Color.blue);
        assertFalse(a1.equals(a2));
        a2.setArrowPaint(Color.blue);
        assertTrue(a1.equals(a2));


        //private double labelOffset;
        a1.setLabelOffset(10.0);
        assertFalse(a1.equals(a2));
        a2.setLabelOffset(10.0);
        assertTrue(a1.equals(a2));


    }

View Full Code Here


    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = null;
        try {
            a2 = (XYPointerAnnotation) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

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    /**
     * Checks that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1 instanceof PublicCloneable);
    }

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    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {


        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = null;


        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(a1);

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    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {


        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1.equals(a2));


        a1 = new XYPointerAnnotation("Label2", 10.0, 20.0, Math.PI);
        assertFalse(a1.equals(a2));
        a2 = new XYPointerAnnotation("Label2", 10.0, 20.0, Math.PI);
        assertTrue(a1.equals(a2));


        a1.setX(11.0);
        assertFalse(a1.equals(a2));
        a2.setX(11.0);
        assertTrue(a1.equals(a2));


        a1.setY(22.0);
        assertFalse(a1.equals(a2));
        a2.setY(22.0);
        assertTrue(a1.equals(a2));


        //private double angle;
        a1.setAngle(Math.PI / 4.0);
        assertFalse(a1.equals(a2));
        a2.setAngle(Math.PI / 4.0);
        assertTrue(a1.equals(a2));


        //private double tipRadius;
        a1.setTipRadius(20.0);
        assertFalse(a1.equals(a2));
        a2.setTipRadius(20.0);
        assertTrue(a1.equals(a2));


        //private double baseRadius;
        a1.setBaseRadius(5.0);
        assertFalse(a1.equals(a2));
        a2.setBaseRadius(5.0);
        assertTrue(a1.equals(a2));


        //private double arrowLength;
        a1.setArrowLength(33.0);
        assertFalse(a1.equals(a2));
        a2.setArrowLength(33.0);
        assertTrue(a1.equals(a2));


        //private double arrowWidth;
        a1.setArrowWidth(9.0);
        assertFalse(a1.equals(a2));
        a2.setArrowWidth(9.0);
        assertTrue(a1.equals(a2));


        //private Stroke arrowStroke;
        Stroke stroke = new BasicStroke(1.5f);
        a1.setArrowStroke(stroke);
        assertFalse(a1.equals(a2));
        a2.setArrowStroke(stroke);
        assertTrue(a1.equals(a2));


        //private Paint arrowPaint;
        a1.setArrowPaint(Color.blue);
        assertFalse(a1.equals(a2));
        a2.setArrowPaint(Color.blue);
        assertTrue(a1.equals(a2));


        //private double labelOffset;
        a1.setLabelOffset(10.0);
        assertFalse(a1.equals(a2));
        a2.setLabelOffset(10.0);
        assertTrue(a1.equals(a2));


    }

View Full Code Here


    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

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    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = null;
        try {
            a2 = (XYPointerAnnotation) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

View Full Code Here


    /**
     * Checks that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1 instanceof PublicCloneable);
    }

View Full Code Here

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