private static void updateLineImage() {
if( lineImage == null ) {
ImageBuffer buffer = new ImageBuffer( 8, 8 );
buffer.clear( 0xFF );
for( int n = 0; n < 4; n++ ) {
buffer.setPixel( n, 0, 0xFFFFFFFF );
buffer.setPixel( 0, n, 0xFFFFFFFF );
}
lineImage = buffer.toImage();