public void TestQuadOrientation(bool normalised)
{
Quad quad = normalised
? new Quad(Vector2.Zero, new Vector2(1, 0), new Vector2(0, 1), Vector2.One)
: new Quad(new Vector2(0, 1), Vector2.One, Vector2.Zero, new Vector2(1, 0));
float orientation = Vector2Extensions.GetOrientation(quad.GetVertices());
Assert.That(orientation, Is.EqualTo(normalised ? 2 : -2).Within(0.001));
}
public void TestArrayOrientation(bool clockwise)
{
var vertices = new[]
{
new Vector2(0, 1),
Vector2.One,
new Vector2(1, 0),
Vector2.Zero
};
if (!clockwise)
{
Array.Reverse(vertices);
}
float orientation = Vector2Extensions.GetOrientation(vertices);
Assert.That(orientation, Is.EqualTo(clockwise ? 2 : -2).Within(0.001));
}
private void assertPolygonEquals(IPolygon expected, IPolygon actual, bool reverse)
=> Assert.That(Vector2Extensions.GetOrientation(actual.GetVertices()),
reverse
? Is.EqualTo(-Vector2Extensions.GetOrientation(expected.GetVertices()))
: Is.EqualTo(Vector2Extensions.GetOrientation(expected.GetVertices())));