private void AssertNtsConsistentRelate(IShape shape)
{
IntersectionMatrix expectedM = POLY_SHAPE.Geometry.Relate(((NtsSpatialContext)ctx).GetGeometryFrom(shape));
SpatialRelation expectedSR = NtsGeometry.IntersectionMatrixToSpatialRelation(expectedM);
//NTS considers a point on a boundary INTERSECTS, not CONTAINS
if (expectedSR == SpatialRelation.INTERSECTS && shape is Core.Shapes.IPoint)
{
expectedSR = SpatialRelation.CONTAINS;
}
AssertRelation(null, expectedSR, POLY_SHAPE, shape);
if (ctx.IsGeo)
{
//shift shape, set to shape2
IShape shape2;
if (shape is IRectangle)
{
IRectangle r = (IRectangle)shape;
shape2 = MakeNormRect(r.MinX + DL_SHIFT, r.MaxX + DL_SHIFT, r.MinY, r.MaxY);
}
else if (shape is Core.Shapes.IPoint)
{
Core.Shapes.IPoint p = (Core.Shapes.IPoint)shape;
shape2 = ctx.MakePoint(base.NormX(p.X + DL_SHIFT), p.Y);
}
else
{
throw new Exception("" + shape);
}
AssertRelation(null, expectedSR, POLY_SHAPE_DL, shape2);
}
}
#pragma warning disable xUnit1013
public virtual void TestRelationsImpl(bool prepare)
#pragma warning restore xUnit1013
{
Debug.Assert(!((NtsWktShapeParser)ctx.WktShapeParser).IsAutoIndex);
//base polygon
NtsGeometry @base = (NtsGeometry)ctx.ReadShapeFromWkt("POLYGON((0 0, 10 0, 5 5, 0 0))");
//shares only "10 0" with base
NtsGeometry polyI = (NtsGeometry)ctx.ReadShapeFromWkt("POLYGON((10 0, 20 0, 15 5, 10 0))");
//within base: differs from base by one point is within
NtsGeometry polyW = (NtsGeometry)ctx.ReadShapeFromWkt("POLYGON((0 0, 9 0, 5 5, 0 0))");
//a boundary point of base
Core.Shapes.IPoint pointB = ctx.MakePoint(0, 0);
//a shared boundary line of base
NtsGeometry lineB = (NtsGeometry)ctx.ReadShapeFromWkt("LINESTRING(0 0, 10 0)");
//a line sharing only one point with base
NtsGeometry lineI = (NtsGeometry)ctx.ReadShapeFromWkt("LINESTRING(10 0, 20 0)");
if (prepare)
{
@base.Index();
}
AssertRelation(SpatialRelation.CONTAINS, @base, @base);//preferred result as there is no EQUALS
AssertRelation(SpatialRelation.INTERSECTS, @base, polyI);
AssertRelation(SpatialRelation.CONTAINS, @base, polyW);
AssertRelation(SpatialRelation.CONTAINS, @base, pointB);
AssertRelation(SpatialRelation.CONTAINS, @base, lineB);
AssertRelation(SpatialRelation.INTERSECTS, @base, lineI);
if (prepare)
{
lineB.Index();
}
AssertRelation(SpatialRelation.CONTAINS, lineB, lineB);//line contains itself
AssertRelation(SpatialRelation.CONTAINS, lineB, pointB);
}
private NtsGeometry POLY_SHAPE_DL; //POLY_SHAPE shifted by DL_SHIFT to cross the dateline
public NtsGeometryTest()
: base(NtsSpatialContext.GEO)
{
POLY_SHAPE = (NtsGeometry)ctx.ReadShapeFromWkt(POLY_STR);
if (ctx.IsGeo)
{
POLY_SHAPE_DL = ShiftPoly(POLY_SHAPE, DL_SHIFT);
Assert.True(POLY_SHAPE_DL.BoundingBox.CrossesDateLine);
}
}
public virtual void TestWidthGreaterThan180()
{
//does NOT cross the dateline but is a wide shape >180
NtsGeometry ntsGeo = (NtsGeometry)ctx.ReadShapeFromWkt("POLYGON((-161 49, 0 49, 20 49, 20 89.1, 0 89.1, -161 89.2, -161 49))");
CustomAssert.EqualWithDelta(161 + 20, ntsGeo.BoundingBox.Width, 0.001);
//shift it to cross the dateline and check that it's still good
ntsGeo = ShiftPoly(ntsGeo, 180);
CustomAssert.EqualWithDelta(161 + 20, ntsGeo.BoundingBox.Width, 0.001);
}
private NtsGeometry ShiftPoly(NtsGeometry poly, int lon_shift)
{
IGeometry pGeom = poly.Geometry;
Assert.True(pGeom.IsValid);
//shift 180 to the right
pGeom = (IGeometry)pGeom.Clone();
pGeom.Apply(new CoordinateFilterAnonymousHelper(this, lon_shift));
pGeom.GeometryChanged();
Assert.False(pGeom.IsValid);
return((NtsGeometry)ctx.ReadShapeFromWkt(pGeom.AsText()));
}
#pragma warning disable 672
public override string ToString(IShape shape)
#pragma warning restore 672
{
//Note: this logic is from the defunct NtsShapeReadWriter
if (shape is NtsGeometry)
{
NtsGeometry ntsGeom = (NtsGeometry)shape;
return(ntsGeom.Geometry.AsText());
}
//Note: doesn't handle ShapeCollection or BufferedLineString
#pragma warning disable 612, 618
return(base.ToString(shape));
#pragma warning restore 612, 618
}
public void testArea()
{
//simple bbox
Rectangle r = RandomRectangle(20);
var ctxJts = (NtsSpatialContext)ctx;
var rPoly = new NtsGeometry(ctxJts.GetGeometryFrom(r), ctxJts, false);
CustomAssert.EqualWithDelta(r.GetArea(null), rPoly.GetArea(null), 0.0);
CustomAssert.EqualWithDelta(r.GetArea(ctx), rPoly.GetArea(ctx), 0.000001); //same since fills 100%
CustomAssert.EqualWithDelta(1300, POLY_SHAPE.GetArea(null), 0.0);
//fills 27%
CustomAssert.EqualWithDelta(0.27, POLY_SHAPE.GetArea(ctx) / POLY_SHAPE.GetBoundingBox().GetArea(ctx), 0.009);
Assert.True(POLY_SHAPE.GetBoundingBox().GetArea(ctx) > POLY_SHAPE.GetArea(ctx));
}
public virtual void TestArea()
{
//simple bbox
IRectangle r = RandomRectangle(20);
NtsSpatialContext ctxNts = (NtsSpatialContext)ctx;
NtsGeometry rPoly = ctxNts.MakeShape(ctxNts.GetGeometryFrom(r), false, false);
CustomAssert.EqualWithDelta(r.GetArea(null), rPoly.GetArea(null), 0.0);
CustomAssert.EqualWithDelta(r.GetArea(ctx), rPoly.GetArea(ctx), 0.000001);//same since fills 100%
CustomAssert.EqualWithDelta(1300, POLY_SHAPE.GetArea(null), 0.0);
//fills 27%
CustomAssert.EqualWithDelta(0.27, POLY_SHAPE.GetArea(ctx) / POLY_SHAPE.BoundingBox.GetArea(ctx), 0.009);
Assert.True(POLY_SHAPE.BoundingBox.GetArea(ctx) > POLY_SHAPE.GetArea(ctx));
}
public NtsPolygonTest()
: base(NtsSpatialContext.GEO)
{
POLY_SHAPE = (NtsGeometry)ctx.ReadShape(POLY_STR);
if (TEST_DL_POLY && ctx.IsGeo())
{
var pGeom = POLY_SHAPE.GetGeom();
Assert.True(pGeom.IsValid);
//shift 180 to the right
pGeom = (IGeometry)pGeom.Clone();
pGeom.Apply(new NtsPolygonTestCoordinateFilter(this));
pGeom.GeometryChanged();
Assert.False(pGeom.IsValid);
POLY_SHAPE_DL = (NtsGeometry)ctx.ReadShape(pGeom.AsText());
Assert.True(
POLY_SHAPE_DL.GetBoundingBox().GetCrossesDateLine() ||
360 == POLY_SHAPE_DL.GetBoundingBox().GetWidth());
}
}
public void testRussia()
{
//TODO THE RUSSIA TEST DATA SET APPEARS CORRUPT
// But this test "works" anyhow, and exercises a ton.
//Russia exercises JtsGeometry fairly well because of these characteristics:
// * a MultiPolygon
// * crosses the dateline
// * has coordinates needing normalization (longitude +180.000xxx)
// * some geometries might(?) not be "valid" (requires union to overcome)
String wktStr = readFirstLineFromRsrc("russia.wkt.txt");
NtsGeometry jtsGeom = (NtsGeometry)ctx.ReadShape(wktStr);
//Unexplained holes revealed via KML export:
// TODO Test contains: 64°12'44.82"N 61°29'5.20"E
// 64.21245 61.48475
// FAILS
//assertRelation(null,SpatialRelation.CONTAINS, jtsGeom, ctx.makePoint(61.48, 64.21));
}
private void assertJtsConsistentRelate(Shape shape)
{
IntersectionMatrix expectedM = POLY_SHAPE.GetGeom().Relate(((NtsSpatialContext)ctx).GetGeometryFrom(shape));
SpatialRelation expectedSR = NtsGeometry.IntersectionMatrixToSpatialRelation(expectedM);
//JTS considers a point on a boundary INTERSECTS, not CONTAINS
if (expectedSR == SpatialRelation.INTERSECTS && shape is Point)
{
expectedSR = SpatialRelation.CONTAINS;
}
assertRelation(null, expectedSR, POLY_SHAPE, shape);
if (TEST_DL_POLY && ctx.IsGeo())
{
//shift shape, set to shape2
Shape shape2;
if (shape is Rectangle)
{
Rectangle r = (Rectangle)shape;
shape2 = makeNormRect(r.GetMinX() + DL_SHIFT, r.GetMaxX() + DL_SHIFT, r.GetMinY(), r.GetMaxY());
if (!TEST_DL_OTHER && shape2.GetBoundingBox().GetCrossesDateLine())
{
return;
}
}
else if (shape is Point)
{
Point p = (Point)shape;
shape2 = ctx.MakePoint(normX(p.GetX() + DL_SHIFT), p.GetY());
}
else
{
throw new Exception("" + shape);
}
assertRelation(null, expectedSR, POLY_SHAPE_DL, shape2);
}
}