public void Test_R2Rect_FromPoint()
{
// FromPoint(), FromPointPair()
R2Rect d1 = new(new R2Point(0.1, 0), new R2Point(0.25, 1));
Assert.Equal(new R2Rect(d1.Lo(), d1.Lo()), R2Rect.FromPoint(d1.Lo()));
Assert.Equal(new R2Rect(new R2Point(0.15, 0.3), new R2Point(0.35, 0.9)),
R2Rect.FromPointPair(new R2Point(0.15, 0.9), new R2Point(0.35, 0.3)));
Assert.Equal(new R2Rect(new R2Point(0.12, 0), new R2Point(0.83, 0.5)),
R2Rect.FromPointPair(new R2Point(0.83, 0), new R2Point(0.12, 0.5)));
}
private static void CompareS2CellToPadded(S2Cell cell, S2PaddedCell pcell, double padding)
{
Assert.Equal(cell.Id, pcell.Id);
Assert.Equal(cell.Level, pcell.Level);
Assert.Equal(padding, pcell.Padding);
Assert.Equal(cell.BoundUV.Expanded(padding), pcell.Bound);
var center_uv = cell.Id.CenterUV();
Assert.Equal(R2Rect.FromPoint(center_uv).Expanded(padding), pcell.Middle);
Assert.Equal(cell.Center(), pcell.GetCenter());
}