@Override
    public Line clone() {
        try {
            Line line = (Line) super.clone();
            line.direction = direction.clone();
            line.origin = origin.clone();
            return line;
        } catch (CloneNotSupportedException e) {
            throw new AssertionError();
        }
    }
Create a copy of this line.

@return a new instance, equivalent to this one
jme3-core/src/main/java/com/jme3/math/Line.java