public static boolean intersect(Camera camera, Vector3f center, float radius) {
        for (int i = 5; i >= 0; i--) {
            if (camera.getWorldPlane(i).pseudoDistance(center) <= -radius) {
                return false;
            }
        }
        return true;
    }
This class includes some utility methods for computing intersection
between bounding volumes and triangles.

@author Kirill
jme3-core/src/main/java/com/jme3/bounding/Intersection.java