public void AdjacentArea()
{
var adjTo =
new Polygon(
new[]
{
Vector3.Origin,
new Vector3(4.0, 0.0),
new Vector3(4.0, 4.0),
new Vector3(0.0, 4.0)
});
var polygon = Shaper.AdjacentArea(adjTo, 20.0, Orient.N);
Assert.Equal(20.0, polygon.Area);
Assert.Contains(new Vector3(0.0, 4.0), polygon.Vertices);
Assert.Contains(new Vector3(4.0, 4.0), polygon.Vertices);
Assert.Contains(new Vector3(0.0, 9.0), polygon.Vertices);
Assert.Contains(new Vector3(4.0, 9.0), polygon.Vertices);
polygon = Shaper.AdjacentArea(adjTo, 20.0, Orient.S);
Assert.Equal(20.0, polygon.Area);
Assert.Contains(new Vector3(0.0, 0.0), polygon.Vertices);
Assert.Contains(new Vector3(4.0, 0.0), polygon.Vertices);
Assert.Contains(new Vector3(0.0, -5.0), polygon.Vertices);
Assert.Contains(new Vector3(4.0, -5.0), polygon.Vertices);
polygon = Shaper.AdjacentArea(adjTo, 20.0, Orient.W);
Assert.Equal(20.0, polygon.Area);
Assert.Contains(new Vector3(0.0, 0.0), polygon.Vertices);
Assert.Contains(new Vector3(-5.0, 0.0), polygon.Vertices);
Assert.Contains(new Vector3(-5.0, 4.0), polygon.Vertices);
Assert.Contains(new Vector3(0.0, 4.0), polygon.Vertices);
polygon = Shaper.AdjacentArea(adjTo, 20.0, Orient.E);
Assert.Equal(20.0, polygon.Area);
Assert.Contains(new Vector3(4.0, 0.0), polygon.Vertices);
Assert.Contains(new Vector3(4.0, 4.0), polygon.Vertices);
Assert.Contains(new Vector3(9.0, 0.0), polygon.Vertices);
Assert.Contains(new Vector3(9.0, 4.0), polygon.Vertices);
}
