AbstractSnappingController.java 文件源码

/**
 * Return the screen position of the mouse event, unless snapping is activated. If that is the case, a snapped
 * point will be returned (still in pan space).
 */
protected Coordinate getPanPosition(MouseEvent<?> event) {
    if (snappingActive) {
        return getTransformer().worldToPan(getWorldPosition(event));
    }
    return super.getPanPosition(event);
}