f = SimpleFeatureBuilder.build(type, new Object[] { "ft1", point(gf, 20, 20), l, p },
"test.1");
data.addFeature(f);
l = line(gf, new int[] { 130, 130, 110, 110, 110, 130, 30, 130 });
p = (Polygon) l.convexHull();
f = SimpleFeatureBuilder.build(type, new Object[] { "ft2", point(gf, 130, 130), l, p },
"test.2");
data.addFeature(f);
l = line(gf, new int[] { 150, 150, 190, 140, 190, 190 });