using System;
using System.Collections.Generic;
using System.Text;
using PixiEditor.Models.ImageManipulation;
using PixiEditor.Models.Position;
using Xunit;

namespace PixiEditorTests.ModelsTests.ImageManipulationTests
{
    public class TransformTests
    {

        [Theory]
        [InlineData(0,0,1,1,1,1)]
        [InlineData(1,1,0,0,-1,-1)]
        [InlineData(5,5,4,6,-1,1)]
        [InlineData(-15,-15,-16,-16,-1,-1)]
        [InlineData(150,150,1150,1150,1000,1000)]
        public void TestGetTranslation(int x1, int y1, int x2, int y2, int expectedX, int expectedY)
        {
            var translation = Transform.GetTranslation(new Coordinates(x1, y1), new Coordinates(x2, y2));
            Assert.Equal(new Coordinates(expectedX, expectedY), translation);
        }

        [Theory]
        [InlineData(0,0)]
        [InlineData(1,1)]
        [InlineData(5,2)]
        [InlineData(50,150)]
        [InlineData(-5,-52)]
        public void TestTranslate(int vectorX, int vectorY)
        {
            Coordinates[] points = {new Coordinates(0, 0), new Coordinates(5, 5), new Coordinates(15,2)};
            var translatedCords = Transform.Translate(points, new Coordinates(vectorX, vectorY));

            for (int i = 0; i < points.Length; i++)
            {
                Assert.Equal(points[i].X + vectorX, translatedCords[i].X);
                Assert.Equal(points[i].Y + vectorY, translatedCords[i].Y);
            }
        }

    }
}