public void Test_BoundaryIntersects_FullRectangle()
{
S2LatLngRect rect = S2LatLngRect.Full;
S2Point lo = rect.Lo().ToPoint();
var hi = rect.Hi().ToPoint();
Assert.False(rect.BoundaryIntersects(lo, lo));
Assert.False(rect.BoundaryIntersects(lo, hi));
}
public void Test_BoundaryIntersects_SouthHemisphere()
{
// This rectangle only has only one non-degenerate side.
S2LatLngRect rect = RectFromDegrees(-90, -180, 0, 180);
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("-90:-180"), MakePointOrDie("-60:-180")));
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("-60:-170"), MakePointOrDie("-60:170")));
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("-10:-180"), MakePointOrDie("10:-180")));
}
public void Test_BoundaryIntersects_RectCrossingAntiMeridian()
{
S2LatLngRect rect = RectFromDegrees(20, 170, 40, -170);
Assert.True(rect.Contains(MakePointOrDie("30:180")));
// Check that crossings of all four sides are detected.
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("25:160"), MakePointOrDie("25:180")));
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("25:-160"), MakePointOrDie("25:-180")));
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("15:175"), MakePointOrDie("30:175")));
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("45:175"), MakePointOrDie("30:175")));
// Check that the edges on the opposite side of the sphere but at the same
// latitude do not intersect the rectangle boundary.
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("25:-20"), MakePointOrDie("25:0")));
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("25:20"), MakePointOrDie("25:0")));
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("15:-5"), MakePointOrDie("30:-5")));
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("45:-5"), MakePointOrDie("30:-5")));
}
public void Test_BoundaryIntersects_SphericalLune()
{
// This rectangle only has two non-degenerate sides.
S2LatLngRect rect = RectFromDegrees(-90, 100, 90, 120);
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("60:60"), MakePointOrDie("90:60")));
Assert.False(rect.BoundaryIntersects(
MakePointOrDie("-60:110"), MakePointOrDie("60:110")));
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("-60:95"), MakePointOrDie("60:110")));
Assert.True(rect.BoundaryIntersects(
MakePointOrDie("60:115"), MakePointOrDie("80:125")));
}
