using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Azimuth;

namespace Annulus.UnitTests
{
    public class TriangleTests : UnitTestSharp.TestFixture
    {
        public class ProjectionToAxis : UnitTestSharp.TestFixture
        {
            public void ProjectToXAxis()
            {
                Interval projection = Triangle.ProjectionToAxis(
                    new Vector(0, 0), new Vector(1, 0), new Vector(0.5, 2), Vector.UnitX);

                CheckEqual(new Interval(0, 1), projection);
            }

            public void ProjectToYAxis()
            {
                Interval projection = Triangle.ProjectionToAxis(
                    new Vector(0, 0), new Vector(1, 0), new Vector(0.5, 2), Vector.UnitY);

                CheckEqual(new Interval(0, 2), projection);
            }

            public void ProjectToZeroLengthAxis()
            {
                Interval projection = Triangle.ProjectionToAxis(
                    new Vector(0, 0), new Vector(1, 0), new Vector(0.5, 2), Vector.Zero);

                CheckEqual(new Interval(0, 0), projection);
            }

            public void ProjectToUnnormalizedAxis()
            {
                Interval projection = Triangle.ProjectionToAxis(
                    new Vector(0, 0), new Vector(1, 0), new Vector(0.5, 2), -2 * Vector.UnitX);

                CheckEqual(new Interval(-2, 0), projection);
            }
        }
    }
}