using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnitTestSharp;
using Azimuth;
using Annulus;
using Annulus.DeprecatedShapes;

namespace Annulus.UnitTests.DeprecatedShapes
{
    class CircleTests : TestFixture
    {
        public void ProjectToNormal_0Rad()
        {
            Interval expected = new Interval(0);
            CheckEqual(expected, (new Circle(0)).ProjectToNormal(new Vector(10, -10)));
		}

		public void ProjectToNormal()
		{
			Interval expected = new Interval(-10, 10);
			CheckEqual(expected, (new Circle(10)).ProjectToNormal(Vector.UnitX));
		}

		public void ProjectToNormal_NonUnitLengthNormal()
		{
			Interval expected = new Interval(10, -10);
			CheckEqual(expected, (new Circle(10)).ProjectToNormal(new Vector(Math.Sqrt(2), -Math.Sqrt(2))));
		}

		public void MostExtremePoint_0()
		{
			Circle circle = new Circle(0);
            Scalar extremeness;

			Vector actual;
			circle.FindMostExtremePointAlongNormal(Vector.UnitX, out extremeness, out actual);

			CheckEqual(Vector.Zero, actual);
		}

		public void MostExtremePoint()
		{
			Circle circle = new Circle(10);
            Scalar extremeness;

			Vector actual;
			circle.FindMostExtremePointAlongNormal(Vector.UnitX, out extremeness, out actual);

			CheckEqual(Vector.UnitX * circle.Radius, actual);
		}

		public void MostExtremePoint_NonUnitLengthNormal()
		{
			Circle circle = new Circle(10);
            Scalar extremeness;

			Vector actual;
			circle.FindMostExtremePointAlongNormal(Vector.UnitX * 10, out extremeness, out actual);

			CheckEqual((Vector.UnitX * 10) * 10, actual);
		}

        public void CenterOfMass()
        {
			CheckEqual(Vector.Zero, (new Circle(10)).Centroid);
        }

		public void Radius_0()
		{
			Circle circle = new Circle(0);

			CheckEqual(0, circle.Radius);
		}

		public void Radius_NonZero()
		{
			Circle circle = new Circle(10);

			CheckEqual(10, circle.Radius);
		}

        public void Area_0()
        {
			Circle circle = new Circle(0);

			CheckEqual(0, circle.Area);
		}

		public void Area_NonZero()
		{
			Circle circle = new Circle(10);

			CheckEqual(Math.PI * 100, circle.Area);
		}

        public void Perimeter_0()
        {
			Circle circle = new Circle(0);

			CheckEqual(0, circle.Perimeter);
		}

		public void Perimeter_NonZero()
		{
			Circle circle = new Circle(10);

			CheckEqual(20 * Math.PI, circle.Perimeter);
		}

        public void BoundingCircle()
        {
			Circle circle = new Circle(10);

            CheckEqual(circle, circle.BoundingCircle);
        }
        
        public void Clone()
        {
			Circle circle = new Circle(10);

            CheckEqual(circle.Radius, circle.Clone().Radius);
        }
    }
}