public void CalcSquare(string poly, string expectedSquare)
{
var polygon = new Polygon(poly.Split(' ').Select(Vector.Parse).ToArray());
var s = polygon.GetSignedSquare();
s.Should().Be(Rational.Parse(expectedSquare));
}
public void BeParsable_EvenIfBig()
{
var v = Rational.Parse("1267650600228229401496703205377/1267650600228229401496703205376");
v.Numerator.ToString().Should().Be("1267650600228229401496703205377");
v.Denomerator.ToString().Should().Be("1267650600228229401496703205376");
}
public void BeRotated(string point, string pivot, string x, string expectedPoint)
{
Vector p = point;
Vector pv = pivot;
var expected = Vector.Parse(expectedPoint);
p.Rotate(pv, Rational.Parse(x)).Should().Be(expected);
expected.Rotate(pv, -Rational.Parse(x)).Should().Be(p);
}
public static Vector Parse(string s)
{
var parts = s.Split(',');
if (parts.Length != 2)
{
throw new FormatException(s);
}
return(new Vector(Rational.Parse(parts[0]), Rational.Parse(parts[1])));
}