    @Test
    public void testGetObjectsWithinDistance()
    {

        System.out.println("getObjectsWithinDistance");

        GeomVectorField instance = new GeomVectorField();

        addEvenlySpacedPoints(100, 100, 10, instance);

        MasonGeometry testPoint = new MasonGeometry(createPoint(50,50));

        Bag result = instance.getObjectsWithinDistance(testPoint, 10.0);

        // Essentially the points immediately above, below, to either side, and
        // the point centered at (50,50).
        assertTrue( result.size() == 5 );
    }