diff --git a/Userland/Libraries/LibGfx/Matrix3x3.h b/Userland/Libraries/LibGfx/Matrix3x3.h new file mode 100644 index 0000000000..2f97714b48 --- /dev/null +++ b/Userland/Libraries/LibGfx/Matrix3x3.h @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2021, Jelle Raaijmakers + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#pragma once + +#include +#include + +namespace Gfx { + +template +using Matrix3x3 = Matrix<3, T>; + +template +constexpr static Vector3 operator*(Matrix3x3 const& m, Vector3 const& v) +{ + auto const& elements = m.elements(); + return Vector3( + v.x() * elements[0][0] + v.y() * elements[0][1] + v.z() * elements[0][2], + v.x() * elements[1][0] + v.y() * elements[1][1] + v.z() * elements[1][2], + v.x() * elements[2][0] + v.y() * elements[2][1] + v.z() * elements[2][2]); +} + +typedef Matrix3x3 FloatMatrix3x3; +typedef Matrix3x3 DoubleMatrix3x3; +} + +using Gfx::DoubleMatrix3x3; +using Gfx::FloatMatrix3x3; +using Gfx::Matrix3x3;