/**
* Overrides {@linkplain GridFeatureBuilder#setAttributes(GridElement, Map)} to assign a
* sequential integer id value to each grid element feature as it is constructed.
*
* @param el the element from which the new feature is being constructed
* @param attributes a {@code Map} with the single key "id"
*/
@Override
public void setAttributes(GridElement ge, Map<String, Object> attributes) {
PolygonElement pe = (PolygonElement) ge;
attributes.put("id", id);
attributes.put("centerX", pe.getCenter().x);
attributes.put("centerY", pe.getCenter().y);
}
@Test
public void toDenseGeometry() {
PolygonElement oblong = new OblongImpl(0, 0, WIDTH, HEIGHT, null);
final int density = 10;
final double maxSpacing = Math.min(WIDTH, HEIGHT) / density;
Geometry polygon = oblong.toDenseGeometry(maxSpacing);
assertNotNull(polygon);
assertTrue(polygon instanceof Polygon);
assertTrue(polygon.getCoordinates().length - 1 >= 2 * (WIDTH + HEIGHT) * density);
}
@Test
public void toGeometry() {
PolygonElement oblong = new OblongImpl(MINX, MINY, WIDTH, HEIGHT, null);
Geometry polygon = oblong.toGeometry();
assertNotNull(polygon);
assertTrue(polygon instanceof Polygon);
Set<Coordinate> polyCoords = new HashSet<Coordinate>(Arrays.asList(polygon.getCoordinates()));
for (Coordinate c : oblong.getVertices()) {
assertTrue(polyCoords.contains(c));
}
}
@Test
public void getVertices() {
PolygonElement oblong = new OblongImpl(MINX, MINY, WIDTH, HEIGHT, null);
Coordinate[] expected = {
new Coordinate(MINX, MINY),
new Coordinate(MINX, MINY + HEIGHT),
new Coordinate(MINX + WIDTH, MINY + HEIGHT),
new Coordinate(MINX + WIDTH, MINY),
};
Coordinate[] actual = oblong.getVertices();
assertEquals(expected.length, actual.length);
for (int i = 0; i < expected.length; i++) {
assertCoordinate(expected[i], actual[i]);
}
}
@Test
public void getCenter() {
PolygonElement oblong = new OblongImpl(MINX, MINY, WIDTH, HEIGHT, null);
Coordinate expected = new Coordinate(WIDTH / 2 + MINX, HEIGHT / 2 + MINY);
assertCoordinate(expected, oblong.getCenter());
}
@Test
public void getBounds() {
PolygonElement oblong = new OblongImpl(MINX, MINY, WIDTH, HEIGHT, null);
assertEnvelope(new Envelope(-10, WIDTH - 10, -5, HEIGHT - 5), oblong.getBounds());
}
@Test
public void getArea() {
PolygonElement oblong = new OblongImpl(MINX, MINY, WIDTH, HEIGHT, null);
double expected = WIDTH * HEIGHT;
assertEquals(expected, oblong.getArea(), TOL);
}