public void ToGeometryMultiPolygonReturnsExpectedResult()
{
_fixture.CustomizeMultiPolygon();
var input = _fixture.Create <Polygon>();
var result = GeometryTranslator.ToGeometryMultiPolygon(input);
Assert.Equal(input.NumberOfParts, result.Geometries.Cast <NetTopologySuite.Geometries.Polygon>().Sum(polygon => polygon.Holes.Length + 1));
Assert.Equal(input.NumberOfPoints, result.Geometries.Cast <NetTopologySuite.Geometries.Polygon>().Sum(polygon => polygon.Shell.NumPoints + polygon.Holes.Sum(hole => hole.NumPoints)));
Assert.Equal(input.BoundingBox, new BoundingBox2D(
result.EnvelopeInternal.MinX,
result.EnvelopeInternal.MinY,
result.EnvelopeInternal.MaxX,
result.EnvelopeInternal.MaxY
));
var offset = 0;
var parts = new List <int>();
foreach (var linearRing in result
.Geometries
.Cast <NetTopologySuite.Geometries.Polygon>()
.SelectMany(polygon => new[] { polygon.Shell }.Concat(polygon.Holes)))
{
parts.Add(offset);
offset += linearRing.NumPoints;
}
Assert.Equal(input.Parts, parts);
Assert.Equal(input.Points,
result
.Geometries
.Cast <NetTopologySuite.Geometries.Polygon>()
.SelectMany(polygon =>
polygon
.Shell
.Coordinates
.Concat(
polygon
.Holes
.SelectMany(hole => hole.Coordinates))
.Select(point => new Point(point.X, point.Y))
));
}
public void ToGeometryMultiPolygonCanNotBeNull()
{
Assert.Throws <ArgumentNullException>(
() => GeometryTranslator.ToGeometryMultiPolygon(null));
}