public void Test_R2Rect_AddPoint()
{
// AddPoint()
R2Point sw1 = new(0, 0.25);
R2Point ne1 = new(0.5, 0.75);
R2Rect r1 = new(sw1, ne1);
R2Rect r2 = R2Rect.Empty;
r2 = r2.AddPoint(new R2Point(0, 0.25));
r2 = r2.AddPoint(new R2Point(0.5, 0.25));
r2 = r2.AddPoint(new R2Point(0, 0.75));
r2 = r2.AddPoint(new R2Point(0.1, 0.4));
Assert.Equal(r1, r2);
}
private static void TestIntervalOps(R2Rect x, R2Rect y, string expected_rexion,
R2Rect expected_union, R2Rect expected_intersection)
{
// Test all of the interval operations on the given pair of intervals.
// "expected_rexion" is a sequence of "T" and "F" characters corresponding
// to the expected results of Contains(), InteriorContains(), Intersects(),
// and InteriorIntersects() respectively.
Assert.Equal(expected_rexion[0] == 'T', x.Contains(y));
Assert.Equal(expected_rexion[1] == 'T', x.InteriorContains(y));
Assert.Equal(expected_rexion[2] == 'T', x.Intersects(y));
Assert.Equal(expected_rexion[3] == 'T', x.InteriorIntersects(y));
Assert.Equal(x.Union(y) == x, x.Contains(y));
Assert.Equal(!x.Intersection(y).IsEmpty(), x.Intersects(y));
Assert.Equal(expected_union, x.Union(y));
Assert.Equal(expected_intersection, x.Intersection(y));
R2Rect r = x;
r = r.AddRect(y);
Assert.Equal(expected_union, r);
if (y.GetSize() == new R2Point(0, 0))
{
r = x;
r = r.AddPoint(y.Lo());
Assert.Equal(expected_union, r);
}
}