public final void updateGeometry(Vector3f center, float x, float y, float z) {
        if (center != null) {this.center.set(center); }
        this.xExtent = x;
        this.yExtent = y;
        this.zExtent = z;
        updateGeometry();
    }
Rebuilds this box based on a new set of parameters.
<p>
Note that the actual sides will be twice the given extent values because
the box extends in both directions from the center for each extent.

@param center the center of the box.
@param x the X extent of the box in each direction.
@param y the Y extent of the box in each direction.
@param z the Z extent of the box in each direction.
jme3-core/src/main/java/com/jme3/scene/shape/AbstractBox.java