private static void TestShellRingOrientationSetter(GeometryFactoryEx gf, LinearRingOrientation ringOrientation, int failKind)
{
try
{
gf.OrientationOfExteriorRing = ringOrientation;
if (failKind != 0)
{
Assert.Fail("Setting exterior ring orientation should have failed!");
}
Assert.AreEqual(ringOrientation, gf.OrientationOfExteriorRing);
}
catch (ArgumentOutOfRangeException iae)
{
if (failKind != 1)
{
Assert.Fail("Wrong argument");
}
}
catch (InvalidOperationException isa)
{
if (failKind != 2)
{
Assert.Fail("Setting exterior ring orientation twice!");
}
}
catch (Exception e)
{
Assert.Fail(e.Message);
}
}
public void CustomGeometryFactoryShouldBeAllowedWithSRID()
{
var pm = new PrecisionModel(10);
const int initialSRID = 0;
var csf = PackedCoordinateSequenceFactory.FloatFactory;
const LinearRingOrientation orientation = LinearRingOrientation.Clockwise;
var gf = new GeometryFactoryEx(pm, initialSRID, csf)
{
OrientationOfExteriorRing = orientation,
};
const int expectedSRID = 4326;
string xml = $@"
<gml:Point srsName='urn:ogc:def:crs:EPSG::{expectedSRID}' xmlns:gml='http://www.opengis.net/gml'>
<gml:coordinates>45.67, 65.43</gml:coordinates>
</gml:Point>";
var gr = new GMLReader(gf);
foreach (var readMethod in GetReadMethods())
{
var pt = (Point)readMethod(gr, xml);
Assert.That(pt.Factory, Is.InstanceOf <GeometryFactoryEx>()
.With.Property(nameof(GeometryFactoryEx.SRID)).EqualTo(expectedSRID)
.With.Property(nameof(GeometryFactoryEx.OrientationOfExteriorRing)).EqualTo(orientation)
.With.Property(nameof(GeometryFactoryEx.PrecisionModel)).EqualTo(pm)
.With.Property(nameof(GeometryFactoryEx.CoordinateSequenceFactory)).EqualTo(csf));
}
}
public void SettingSRIDShouldCopyFactoryFaithfully()
{
var pm = new PrecisionModel(10);
const int initialSRID = 0;
var csf = PackedCoordinateSequenceFactory.FloatFactory;
const LinearRingOrientation orientation = LinearRingOrientation.Clockwise;
var gf = new GeometryFactoryEx(pm, initialSRID, csf)
{
OrientationOfExteriorRing = orientation,
};
var env = new Envelope(-10, 10, -8, 8);
var g = gf.ToGeometry(env);
const int expectedSRID = 4326;
g.SRID = expectedSRID;
Assert.That(g.Factory, Is.InstanceOf <GeometryFactoryEx>()
.With.Property(nameof(GeometryFactoryEx.SRID)).EqualTo(expectedSRID)
.With.Property(nameof(GeometryFactoryEx.OrientationOfExteriorRing)).EqualTo(orientation)
.With.Property(nameof(GeometryFactoryEx.PrecisionModel)).EqualTo(pm)
.With.Property(nameof(GeometryFactoryEx.CoordinateSequenceFactory)).EqualTo(csf));
}
private static CoordinateSequence CreateRing(CoordinateSequenceFactory factory, int ring, LinearRingOrientation orientation)
{
var coordinates = CreateCcwRing(ring);
if (orientation == LinearRingOrientation.Clockwise)
{
CoordinateArrays.Reverse(coordinates);
}
if (orientation == LinearRingOrientation.DontCare)
{
if (reverseSequence)
{
CoordinateArrays.Reverse(coordinates);
}
reverseSequence = !reverseSequence;
}
return(factory.Create(coordinates));
}
private static void TestShellRingOrientationEnforcement(LinearRingOrientation ringOrientation)
{
var gf = new GeometryFactoryEx();
gf.OrientationOfExteriorRing = ringOrientation;
var cf = gf.CoordinateSequenceFactory;
var origShellSequence = CreateRing(cf, 0, ringOrientation);
var origHolesSequences = new[]
{
CreateRing(cf, 1, ringOrientation),
CreateRing(cf, 2, ringOrientation)
};
var shell = gf.CreateLinearRing(origShellSequence.Copy());
var holes = new LinearRing[]
{
gf.CreateLinearRing(origHolesSequences[0].Copy()),
gf.CreateLinearRing(origHolesSequences[1].Copy())
};
var polygon = gf.CreatePolygon(shell, holes);
switch (ringOrientation)
{
case LinearRingOrientation.CW:
if (polygon.Shell.IsCCW)
{
Assert.Fail($"Shell ring orientation requested {LinearRingOrientation.CW}, was CCW");
}
if (!polygon.Holes[0].IsCCW)
{
Assert.Fail($"Hole[0] ring orientation requested {LinearRingOrientation.CCW}, was CW");
}
;
if (!polygon.Holes[1].IsCCW)
{
Assert.Fail($"Hole[1] ring orientation requested {LinearRingOrientation.CCW}, was CW");
}
;
break;
case LinearRingOrientation.CCW:
if (!polygon.Shell.IsCCW)
{
Assert.Fail($"Shell ring orientation requested {LinearRingOrientation.CCW}, was CW");
}
if (polygon.Holes[0].IsCCW)
{
Assert.Fail($"Hole[0] ring orientation requested {LinearRingOrientation.CW}, was CCW");
}
;
if (polygon.Holes[1].IsCCW)
{
Assert.Fail($"Hole[1] ring orientation requested {LinearRingOrientation.CW}, was CCW");
}
;
break;
case LinearRingOrientation.DontCare:
if (polygon.Shell.IsCCW != Orientation.IsCCW(origShellSequence))
{
Assert.Fail($"Shell ring orientation flipped");
}
if (polygon.Holes[0].IsCCW != Orientation.IsCCW(origHolesSequences[0]))
{
Assert.Fail($"Hole[0] ring orientation flipped");
}
if (polygon.Holes[1].IsCCW != Orientation.IsCCW(origHolesSequences[1]))
{
Assert.Fail($"Hole[1] ring orientation flipped");
}
break;
}
// Set up a polygon with hole using buffer
var pt = new Coordinate(0, 0);
var c = gf.CreatePoint(pt);
var b = c.Buffer(10d);
var s = c.Buffer(6d);
var test = (Polygon)b.Difference(s);
if (ringOrientation == LinearRingOrientation.CW)
{
if (test.Shell.IsCCW)
{
Assert.Fail($"Buffer should return shell ring with CW orientation");
}
if (!test.Holes[0].IsCCW)
{
Assert.Fail($"Buffer should return hole ring with CCW orientation");
}
}
else if (ringOrientation == LinearRingOrientation.CCW)
{
if (!test.Shell.IsCCW)
{
Assert.Fail($"Buffer should return shell ring with CCW orientation");
}
if (test.Holes[0].IsCCW)
{
Assert.Fail($"Buffer should return hole ring with CW orientation");
}
}
}