// Copyright (C) Stichting Deltares 2025. All rights reserved.
// 
// This file is part of the Dam Engine.
// 
// The Dam Engine is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// 
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// 
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System.Collections.Generic;
using Deltares.DamEngine.Data.Geometry;
using NUnit.Framework;

namespace Deltares.DamEngine.Data.Tests.Geometry;

[TestFixture]
public class Routines2DTests
{
    [Test]
    public void GivenTriangle_WhenDeterminingTheCentroid_ThenReturnMediansIntersection()
    {
        var polygon = new List<Point2D>
        {
            new Point2D(-5, -1),
            new Point2D(3, -1),
            new Point2D(-1, 5)
        };

        Point2D centroid = Routines2D.ComputeCentroid(polygon);

        Assert.Multiple(() =>
        {
            Assert.That(centroid.X, Is.EqualTo(-1));
            Assert.That(centroid.Z, Is.EqualTo(1));
        });
    }

    [Test]
    public void GivenRectangle_WhenDeterminingTheCentroid_ThenReturnCenter()
    {
        var polygon = new List<Point2D>
        {
            new Point2D(-5, -1),
            new Point2D(3, -1),
            new Point2D(3, 6),
            new Point2D(-5, 6)
        };

        Point2D centroid = Routines2D.ComputeCentroid(polygon);

        Assert.Multiple(() =>
        {
            Assert.That(centroid.X, Is.EqualTo(-1));
            Assert.That(centroid.Z, Is.EqualTo(2.5));
        });
    }
}