GraphUtils.java 文件源码

/**
 * Paints an arc from src to tgt.
 * <p/>
 * <b>Assumption:</b> The tgt is located below of the src.
 */
public static float[] arcReversed(GC gc, Point src, Point tgt) {
    Path path = new Path(gc.getDevice());
    int ydiff = (int) ((tgt.y - src.y) / 3);
    path.moveTo((int) src.x, (int) src.y);
    path.cubicTo((int) src.x, (int) src.y + ydiff, (int) tgt.x, (int) tgt.y - ydiff * 2, (int) tgt.x, (int) tgt.y);
    gc.drawPath(path);

    float[] pp = path.getPathData().points;
    return pp;
}