PathGraphics.java 文件源码

/**
 * Draws a sequence of connected lines defined by
 * arrays of <i>x</i> and <i>y</i> coordinates.
 * Each pair of (<i>x</i>,&nbsp;<i>y</i>) coordinates defines a point.
 * The figure is not closed if the first point
 * differs from the last point.
 * @param       xPoints an array of <i>x</i> points
 * @param       yPoints an array of <i>y</i> points
 * @param       nPoints the total number of points
 * @see         java.awt.Graphics#drawPolygon(int[], int[], int)
 * @since       1.1
 */
public void drawPolyline(int xPoints[], int yPoints[],
                         int nPoints) {

    if (nPoints == 2) {
        draw(new Line2D.Float(xPoints[0], yPoints[0],
                              xPoints[1], yPoints[1]));
    } else if (nPoints > 2) {
        Path2D path = new Path2D.Float(Path2D.WIND_EVEN_ODD, nPoints);
        path.moveTo(xPoints[0], yPoints[0]);
        for(int i = 1; i < nPoints; i++) {
            path.lineTo(xPoints[i], yPoints[i]);
        }
        draw(path);
    }
}