ImageSharp/tests/ImageSharp.Tests/TestDataIcc/Conversion/IccConversionDataMatrix.cs

// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

using System.Numerics;

namespace SixLabors.ImageSharp.Tests.TestDataIcc.Conversion;

public class IccConversionDataMatrix
{
    private static readonly Vector3 Vector3Zero = new(0.0f, 0.0f, 0.0f);

    public static float[,] Matrix3x3Random =
    {
        { 0.1f, 0.2f, 0.3f },
        { 0.4f, 0.5f, 0.6f },
        { 0.7f, 0.8f, 0.9f }
    };

    public static float[,] Matrix3x3Identity =
    {
        { 1, 0, 0 },
        { 0, 1, 0 },
        { 0, 0, 1 }
    };

    public static object[][] MatrixConversionTestData =
    [
        [CreateMatrix(Matrix3x3Identity), Vector3Zero, new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.5f, 0.5f, 0.5f, 0)
        ],
        [CreateMatrix(Matrix3x3Identity), new Vector3(0.2f, 0.2f, 0.2f), new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.7f, 0.7f, 0.7f, 0)
        ],
        [CreateMatrix(Matrix3x3Random), Vector3Zero, new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.6f, 0.75f, 0.9f, 0)
        ],
        [CreateMatrix(Matrix3x3Random), new Vector3(0.1f, 0.2f, 0.3f), new Vector4(0.5f, 0.5f, 0.5f, 0), new Vector4(0.7f, 0.95f, 1.2f, 0)
        ],
        [CreateMatrix(Matrix3x3Random), Vector3Zero, new Vector4(0.2f, 0.4f, 0.7f, 0), new Vector4(0.67f, 0.8f, 0.93f, 0)
        ],
        [CreateMatrix(Matrix3x3Random), new Vector3(0.1f, 0.2f, 0.3f), new Vector4(0.2f, 0.4f, 0.7f, 0), new Vector4(0.77f, 1, 1.23f, 0)
        ]
    ];

    private static Matrix4x4 CreateMatrix(float[,] matrix) => new(
            matrix[0, 0],
            matrix[0, 1],
            matrix[0, 2],
            0,
            matrix[1, 0],
            matrix[1, 1],
            matrix[1, 2],
            0,
            matrix[2, 0],
            matrix[2, 1],
            matrix[2, 2],
            0,
            0,
            0,
            0,
            1);
}