public Plane getWorldPlane(int planeId) {
        return worldPlane[planeId];
    }
Provides access to one of the planes used for culling.

@param planeId the index of the Plane to access (0&rarr;left, 1&rarr;right, 2&rarr;bottom, 3&rarr;top,
    4&rarr;far, 5&rarr;near)
@return the pre-existing instance
jme3-core/src/main/java/com/jme3/renderer/Camera.java