@Override
    public void read(JmeImporter importer) throws IOException {
        super.read(importer);
        InputCapsule capsule = importer.getCapsule(this);

        width = capsule.readFloat("width", 0f);
        height = capsule.readFloat("height", 0f);
    }
De-serializes from the specified importer, for example when loading from
a J3O file.

@param importer the importer to use (not null)
@throws IOException from the importer
jme3-vr/src/main/java/com/jme3/scene/CenterQuad.java