public void Test_BuildPolygonBoundaries_NoComponents()
{
List <List <S2Shape> > faces = new ();
List <List <S2Shape> > components = new ();
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Empty(faces);
}
public sealed override ReferencePoint GetReferencePoint()
{
// GetReferencePoint interprets a loop with no vertices as "full".
if (NumVertices == 0)
{
return(ReferencePoint.FromContained(false));
}
return(S2ShapeUtil.GetReferencePoint(this));
}
public void Test_BuildPolygonBoundaries_OneDegenerateLoop()
{
TestLaxLoop a0 = new("0:0, 1:0, 0:0");
var faces = new List <List <S2Shape> >();
var components = new List <List <S2Shape> > {
new List <S2Shape> {
a0
}
};
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Single(faces);
}
public void Test_BuildPolygonBoundaries_OneLoop()
{
TestLaxLoop a0 = new("0:0, 1:0, 0:1"); // Outer face
TestLaxLoop a1 = new("0:0, 0:1, 1:0");
var faces = new List <List <S2Shape> >();
var components = new List <List <S2Shape> > {
new List <S2Shape> {
a0, a1
}
};
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Equal(2, faces.Count);
}
public void Test_BuildPolygonBoundaries_TwoDegenerateLoops()
{
TestLaxLoop a0 = new("0:0, 1:0, 0:0");
TestLaxLoop b0 = new("2:0, 3:0, 2:0");
var faces = new List <List <S2Shape> >();
var components = new List <List <S2Shape> > {
new List <S2Shape> {
a0, b0
}
};
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Single(faces);
Assert.Equal(2, faces[0].Count);
}
public void Test_BuildPolygonBoundaries_TwoLoopsDifferentComponents()
{
TestLaxLoop a0 = new("0:0, 1:0, 0:1"); // Outer face
TestLaxLoop a1 = new("0:0, 0:1, 1:0");
TestLaxLoop b0 = new("0:2, 1:2, 0:3"); // Outer face
TestLaxLoop b1 = new("0:2, 0:3, 1:2");
var faces = new List <List <S2Shape> >();
var components = new List <List <S2Shape> > {
new List <S2Shape> {
a0, a1
}, new List <S2Shape> {
b0, b1
}
};
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Equal(3, faces.Count);
Assert.Equal((new S2Shape[] { a0, b0 }), faces[2]);
}
public void Test_BuildPolygonBoundaries_TwoNestedLoops()
{
TestLaxLoop a0 = new("0:0, 3:0, 0:3"); // Outer face
TestLaxLoop a1 = new("0:0, 0:3, 3:0");
TestLaxLoop b0 = new("1:1, 2:0, 0:2"); // Outer face
TestLaxLoop b1 = new("1:1, 0:2, 2:0");
var faces = new List <List <S2Shape> >();
var components = new List <List <S2Shape> > {
new List <S2Shape> {
a0, a1
}, new List <S2Shape> {
b0, b1
}
};
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Equal(3, faces.Count);
Assert.Equal((new S2Shape[] { b0, a1 }), faces[0]);
}
public void Test_BuildPolygonBoundaries_ComplexTest1()
{
// Loops at index 0 are the outer (clockwise) loops.
// Component "a" consists of 4 adjacent squares forming a larger square.
TestLaxLoop a0 = new("0:0, 25:0, 50:0, 50:25, 50:50, 25:50, 0:50, 0:50");
TestLaxLoop a1 = new("0:0, 0:25, 25:25, 25:0");
TestLaxLoop a2 = new("0:25, 0:50, 25:50, 25:25");
TestLaxLoop a3 = new("25:0, 25:25, 50:25, 50:0");
TestLaxLoop a4 = new("25:25, 25:50, 50:50, 50:25");
// Component "b" consists of a degenerate loop to the left of "a".
TestLaxLoop b0 = new("0:-10, 10:-10");
// Components "a1_a", "a1_b", and "a1_c" are located within "a1".
TestLaxLoop a1_a0 = new("5:5, 20:5, 20:10, 5:10");
TestLaxLoop a1_a1 = new("5:5, 5:10, 10:10, 10:5");
TestLaxLoop a1_a2 = new("10:5, 10:10, 15:10, 15:5");
TestLaxLoop a1_a3 = new("15:5, 15:10, 20:10, 20:5");
TestLaxLoop a1_b0 = new("5:15, 20:15, 20:20, 5:20");
TestLaxLoop a1_b1 = new("5:15, 5:20, 20:20, 20:15");
TestLaxLoop a1_c0 = new("2:5, 2:10, 2:5");
// Two components located inside "a1_a2" and "a1_a3".
TestLaxLoop a1_a2_a0 = new("11:6, 14:6, 14:9, 11:9");
TestLaxLoop a1_a2_a1 = new("11:6, 11:9, 14:9, 14:6");
TestLaxLoop a1_a3_a0 = new("16:6, 19:9, 16:6");
// Five component located inside "a3" and "a4".
TestLaxLoop a3_a0 = new("30:5, 45:5, 45:20, 30:20");
TestLaxLoop a3_a1 = new("30:5, 30:20, 45:20, 45:5");
TestLaxLoop a4_a0 = new("30:30, 40:30, 30:30");
TestLaxLoop a4_b0 = new("30:35, 40:35, 30:35");
TestLaxLoop a4_c0 = new("30:40, 40:40, 30:40");
TestLaxLoop a4_d0 = new("30:45, 40:45, 30:45");
var components = new List <List <S2Shape> >
{
new List <S2Shape> {
a0, a1, a2, a3, a4
},
new List <S2Shape> {
b0
},
new List <S2Shape> {
a1_a0, a1_a1, a1_a2, a1_a3
},
new List <S2Shape> {
a1_b0, a1_b1
},
new List <S2Shape> {
a1_c0
},
new List <S2Shape> {
a1_a2_a0, a1_a2_a1
},
new List <S2Shape> {
a1_a3_a0
},
new List <S2Shape> {
a3_a0, a3_a1
},
new List <S2Shape> {
a4_a0
},
new List <S2Shape> {
a4_b0
},
new List <S2Shape> {
a4_c0
},
new List <S2Shape> {
a4_d0
}
};
var expected_faces = new List <List <S2Shape> >
{
new List <S2Shape> {
a0, b0
},
new List <S2Shape> {
a1, a1_a0, a1_b0, a1_c0
},
new List <S2Shape> {
a1_a1
},
new List <S2Shape> {
a1_a2, a1_a2_a0
},
new List <S2Shape> {
a1_a2_a1
},
new List <S2Shape> {
a1_a3, a1_a3_a0
},
new List <S2Shape> {
a1_b1
},
new List <S2Shape> {
a2
},
new List <S2Shape> {
a3, a3_a0
},
new List <S2Shape> {
a3_a1
},
new List <S2Shape> {
a4, a4_a0, a4_b0, a4_c0, a4_d0
}
};
var faces = new List <List <S2Shape> >();
S2ShapeUtil.BuildPolygonBoundaries(components, faces);
Assert.Equal(expected_faces.Count, faces.Count);
SortFaces(expected_faces);
SortFaces(faces);
Assert.Equal(expected_faces, faces);
}
// Not final; overridden by S2LaxClosedPolylineShape.
public override ReferencePoint GetReferencePoint()
{
return(S2ShapeUtil.GetReferencePoint(this));
}
