public void TestReact()
{
var f = new LowerBoundFunction<int, Int32Order>();
var x = new[] {1, 1, 3, 5, 6, 9}.ToList();
Assert.That(f.React(3, x.ToLog(Δ1.Empty), 4.ToLog(false)), Is.EqualTo(3.ToLog(false)));
Assert.That(f.React(3, x.ToLog(Δ1.Empty), 4.ToLog(true)), Is.EqualTo(3.ToLog(false)));
Assert.That(f.React(3, x.ToLog(Δ1.Empty), 5.ToLog(true)), Is.EqualTo(3.ToLog(false)));
Assert.That(f.React(3, x.ToLog(Δ1.Empty), 3.ToLog(true)), Is.EqualTo(2.ToLog(true)));
Assert.That(f.React(3, x.Mutate(Expressions.Numbers(5).ToSub(), (key, j) => 20), 4.ToLog(false)), Is.EqualTo(3.ToLog(false)));
Assert.That(f.React(3, x.Mutate(Expressions.Numbers(3).ToSub(), (key, j) => 3), 4.ToLog(false)), Is.EqualTo(4.ToLog(true)));
}
/// <summary>
/// Draws a hollow rectangle whose center is position, of width lineWidth (default 1px, does not exceed width)
/// </summary>
/// <param name="batch"> SpriteBatch for drawing </param>
/// <param name="position"> Center of the rectangle </param>
/// <param name="color"> Color of the rectangle </param>
/// <param name="dimensions"> Dimensions of the rectangle </param>
/// <param name="rotation"> Rotation in radians about the center </param>
/// <param name="lineWidth"> Width in pixels of the line </param>
public static void DrawRectangleOutline(SpriteBatch batch, Vector2 position, Color color, Vector2 dimensions,
float rotation, float lineWidth = 1)
{
if (!CanDraw) return;
var dim2 = dimensions/2;
var corners = new[]
{
position + new Vector2(-dim2.X + lineWidth, -dim2.Y + lineWidth),
position + new Vector2(-dim2.X + lineWidth, dim2.Y - lineWidth),
position + new Vector2(dim2.X - lineWidth, dim2.Y - lineWidth),
position + new Vector2(dim2.X - lineWidth, -dim2.Y + lineWidth),
position + new Vector2(-dim2.X + lineWidth, -dim2.Y + lineWidth)
};
corners = corners.Mutate(v => v.RotateAbout(position, rotation)).ToArray();
var scale = new Vector2(0, lineWidth);
for (int i = 0; i < 4; i++)
{
var segment = (corners[i + 1] - corners[i]);
scale.X = segment.Length() + lineWidth;
batch.Draw(pixel1x1, corners[i], null, color, (float) segment.AsAngle(), Vector2.Zero, scale,
SpriteEffects.None, 0);
}
}