Example usage for java.awt.geom Ellipse2D.Double getCenterX

Introduction

In this page you can find the example usage for java.awt.geom Ellipse2D.Double getCenterX.

Prototype

public double getCenterX() 

Source Link

Document

Returns the X coordinate of the center of the framing rectangle of the Shape in double precision.

Usage

From source file:edu.ucla.stat.SOCR.motionchart.MotionBubbleRenderer.java

/**
 * Draws the visual representation of a single data item.
 *
 * @param g2             the graphics device.
 * @param state          the renderer state.
 * @param dataArea       the area within which the data is being drawn.
 * @param info           collects information about the drawing.
 * @param plot           the plot (can be used to obtain standard color
 *                       information etc).
 * @param domainAxis     the domain (horizontal) axis.
 * @param rangeAxis      the range (vertical) axis.
 * @param dataset        the dataset (a {@link edu.ucla.stat.SOCR.motionchart.MotionDataSet} is expected).
 * @param series         the series index (zero-based).
 * @param item           the item index (zero-based).
 * @param crosshairState crosshair information for the plot
 *                       (<code>null</code> permitted).
 * @param pass           the pass index.
 *///from   w  ww . j a  v  a 2 s .  com
@Override
public void drawItem(Graphics2D g2, XYItemRendererState state, Rectangle2D dataArea, PlotRenderingInfo info,
        XYPlot plot, ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset, int series, int item,
        CrosshairState crosshairState, int pass) {
    if (!(dataset instanceof MotionDataSet)) {
        throw new IllegalArgumentException("The dataset must be of type MotionDataSet.");
    }

    // return straight away if the item is not visible
    if (!getItemVisible(series, item)) {
        return;
    }

    PlotOrientation orientation = plot.getOrientation();

    Ellipse2D.Double shape = (Ellipse2D.Double) getItemShape(series, item);

    if (shape.getWidth() != 0 && shape.getHeight() != 0) {
        Ellipse2D.Double circle = translateShape(shape, plot, dataArea);
        g2.setPaint(getItemPaint(series, item));
        g2.fill(circle);
        g2.setStroke(getItemOutlineStroke(series, item));
        g2.setPaint(getItemOutlinePaint(series, item));
        g2.draw(circle);

        if (isItemLabelVisible(series, item)) {
            currCircle = circle;
            if (orientation == PlotOrientation.VERTICAL) {
                drawItemLabel(g2, orientation, dataset, series, item, circle.getCenterX(), circle.getCenterY(),
                        false);
            } else if (orientation == PlotOrientation.HORIZONTAL) {
                drawItemLabel(g2, orientation, dataset, series, item, circle.getCenterY(), circle.getCenterX(),
                        false);
            }
        }

        // add an entity if this info is being collected
        EntityCollection entities;
        if (info != null) {
            entities = info.getOwner().getEntityCollection();
            if (entities != null && circle.intersects(dataArea)) {
                addEntity(entities, circle, dataset, series, item, circle.getCenterX(), circle.getCenterY());
            }
        }

        int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
        int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
        updateCrosshairValues(crosshairState, shape.getCenterX(), shape.getCenterY(), domainAxisIndex,
                rangeAxisIndex, circle.getCenterX(), circle.getCenterY(), orientation);
    }
}

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