@Override
    protected void getReceivers(GeometryList lightReceivers) {
        lightReceivers.clear();
        for (Spatial scene : viewPort.getScenes()) {
            ShadowUtil.getLitGeometriesInViewPort(scene, viewPort.getCamera(), shadowCams, RenderQueue.ShadowMode.Receive, lightReceivers);
        }
    }
Creates a PointLightShadowRenderer

@param assetManager the application asset manager
@param shadowMapSize the size of the rendered shadowmaps (512,1024,2048,
etc...)
jme3-core/src/main/java/com/jme3/shadow/PointLightShadowRenderer.java