/// <summary>
/// Determines whether a <see cref="IGeometry" /> instance is disjoint from another <see cref="IGeometry" />.
/// </summary>
/// <param name="geometry">The geometry.</param>
/// <param name="otherGeometry">The other geometry.</param>
/// <returns><c>true</c> if the geometry is disjoint from the other geometry; otherwise, <c>false</c>.</returns>
/// <exception cref="System.ArgumentNullException">
/// The geometry is null.
/// or
/// The other geometry is null.
/// </exception>
/// <exception cref="System.ArgumentException">The operation is not supported with the specified geometry types.</exception>
public static Boolean Disjoint(this IGeometry geometry, IGeometry otherGeometry)
{
if (geometry == null)
{
throw new ArgumentNullException("geometry", "The geometry is null.");
}
if (otherGeometry == null)
{
throw new ArgumentNullException("otherGeometry", "The other geometry is null.");
}
using (IGeometryRelateOperator op = GetRelateOperator(geometry))
{
return(op.Disjoint(geometry, otherGeometry));
}
}
public void HalfedgeGeometryRelateTest()
{
IMultiPolygon first = _factory.CreateMultiPolygon(new[]
{
_factory.CreatePolygon(
_factory.CreatePoint(0, 0),
_factory.CreatePoint(10, 0),
_factory.CreatePoint(10, 10),
_factory.CreatePoint(0, 10)),
_factory.CreatePolygon(
_factory.CreatePoint(10, 0),
_factory.CreatePoint(20, 0),
_factory.CreatePoint(20, 10),
_factory.CreatePoint(10, 10)),
_factory.CreatePolygon(
_factory.CreatePoint(0, 10),
_factory.CreatePoint(10, 10),
_factory.CreatePoint(10, 20),
_factory.CreatePoint(0, 20)),
});
IMultiPolygon second = _factory.CreateMultiPolygon(new[]
{
_factory.CreatePolygon(
_factory.CreatePoint(-5, -5),
_factory.CreatePoint(5, -5),
_factory.CreatePoint(5, 5),
_factory.CreatePoint(-5, 5)),
_factory.CreatePolygon(
_factory.CreatePoint(5, -5),
_factory.CreatePoint(15, -5),
_factory.CreatePoint(15, 5),
_factory.CreatePoint(5, 5)),
_factory.CreatePolygon(
_factory.CreatePoint(-5, -15),
_factory.CreatePoint(5, -15),
_factory.CreatePoint(5, -5),
_factory.CreatePoint(-5, -5)),
});
IPolygon third = _factory.CreatePolygon(
_factory.CreatePoint(3, 5),
_factory.CreatePoint(7, 5),
_factory.CreatePoint(7, 15),
_factory.CreatePoint(3, 15));
Assert.IsFalse(_operator.Contains(first, first)); // equals is not contains
Assert.IsFalse(_operator.Contains(first, second));
Assert.IsTrue(_operator.Contains(first, third));
Assert.IsFalse(_operator.Contains(second, third));
Assert.IsFalse(_operator.Within(first, first));
Assert.IsFalse(_operator.Within(first, second));
Assert.IsFalse(_operator.Within(first, third));
Assert.IsFalse(_operator.Within(second, third));
Assert.IsTrue(_operator.Intersects(first, first));
Assert.IsTrue(_operator.Intersects(first, second));
Assert.IsTrue(_operator.Intersects(first, third));
Assert.IsTrue(_operator.Intersects(second, third));
Assert.IsFalse(_operator.Disjoint(first, first));
Assert.IsFalse(_operator.Disjoint(first, second));
Assert.IsFalse(_operator.Disjoint(first, third));
Assert.IsFalse(_operator.Disjoint(second, third));
// for operands with the same dimension crosses is always false
Assert.IsFalse(_operator.Crosses(first, first));
Assert.IsFalse(_operator.Crosses(first, second));
Assert.IsFalse(_operator.Crosses(first, third));
Assert.IsFalse(_operator.Crosses(second, third));
Assert.IsTrue(_operator.Equals(first, first));
Assert.IsFalse(_operator.Equals(first, second));
Assert.IsFalse(_operator.Equals(first, third));
Assert.IsFalse(_operator.Equals(second, third));
Assert.IsFalse(_operator.Touches(first, first));
Assert.IsFalse(_operator.Touches(first, second));
Assert.IsFalse(_operator.Touches(first, third));
Assert.IsTrue(_operator.Touches(second, third));
Assert.IsFalse(_operator.Overlaps(first, first));
Assert.IsTrue(_operator.Overlaps(first, second));
Assert.IsFalse(_operator.Overlaps(first, third)); // contains is not overlaps
Assert.IsFalse(_operator.Overlaps(second, third)); // the result has not the same dimension
}
