public void test_Envelope()
{
//create a new multipoint
MultiPoint mp = CreateTester1();
Geometry geom = mp.GetEnvelope() as Geometry;
//make sure there is something in the envelope
Assertion.AssertEquals("Envelope-1: ", false, geom.IsEmpty());
//get the coordinates out of the geometry
Coordinates coords = geom.GetCoordinates();
//check the first set of coordinates (minX, minY)
Assertion.AssertEquals("Envelope-2: ", 0.0, coords[0].X);
Assertion.AssertEquals("Envelope-3: ", 0.0, coords[0].Y);
//check the second set of coordinates (maxX, minY)
Assertion.AssertEquals("Envelope-4: ", 12.0, coords[1].X);
Assertion.AssertEquals("Envelope-5: ", 0.0, coords[1].Y);
//check the third set of coordinates (maxX, maxY)
Assertion.AssertEquals("Envelope-6: ", 12.0, coords[2].X);
Assertion.AssertEquals("Envelope-7: ", 22.0, coords[2].Y);
//check the forth set of coordinates (minX, maxY)
Assertion.AssertEquals("Envelope-8: ", 0.0, coords[3].X);
Assertion.AssertEquals("Envelope-9: ", 22.0, coords[3].Y);
//check the fifth set of coordinates (minX, minY)
Assertion.AssertEquals("Envelope-10: ", 0.0, coords[4].X);
Assertion.AssertEquals("Envelope-11: ", 0.0, coords[4].Y);
//create a new multipoint
mp = CreateTester3();
geom = mp.GetEnvelope() as Geometry;
//make sure there is something in the envelope
Assertion.AssertEquals("Envelope-12: ", false, geom.IsEmpty());
//get the coordinates out of the geometry
coords = geom.GetCoordinates();
//check the first set of coordinates (minX, minY)
Assertion.AssertEquals("Envelope-13: ", 7.0, coords[0].X);
Assertion.AssertEquals("Envelope-14: ", 13.0, coords[0].Y);
//check the second set of coordinates (maxX, minY)
Assertion.AssertEquals("Envelope-15: ", 15.0, coords[1].X);
Assertion.AssertEquals("Envelope-16: ", 13.0, coords[1].Y);
//check the third set of coordinates (maxX, maxY)
Assertion.AssertEquals("Envelope-17: ", 15.0, coords[2].X);
Assertion.AssertEquals("Envelope-18: ", 21.0, coords[2].Y);
//check the forth set of coordinates (minX, maxY)
Assertion.AssertEquals("Envelope-19: ", 7.0, coords[3].X);
Assertion.AssertEquals("Envelope-20: ", 21.0, coords[3].Y);
//check the fifth set of coordinates (minX, minY)
Assertion.AssertEquals("Envelope-21: ", 7.0, coords[4].X);
Assertion.AssertEquals("Envelope-22: ", 13.0, coords[4].Y);
coords = new Coordinates();
GeometryFactory gf = new GeometryFactory(_precMod, _sRID);
coords = new Coordinates();
mp = gf.CreateMultiPoint(coords);
geom = mp.GetEnvelope() as Geometry;
//make sure there is something in the envelope
Assertion.AssertEquals("Envelope-23: ", true, geom.IsEmpty());
}
