////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2024 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Color.hpp>
#include <SFML/Graphics/Glsl.hpp>
#include <SFML/Graphics/Transform.hpp>

#include <algorithm>


namespace sf::priv
{

////////////////////////////////////////////////////////////
void copyMatrix(const Transform& source, Matrix<3, 3>& dest)
{
    const float* from = source.getMatrix(); // 4x4
    float*       to   = dest.array;         // 3x3

    // Use only left-upper 3x3 block (for a 2D transform)
    to[0] = from[0];
    to[1] = from[1];
    to[2] = from[3];
    to[3] = from[4];
    to[4] = from[5];
    to[5] = from[7];
    to[6] = from[12];
    to[7] = from[13];
    to[8] = from[15];
}


////////////////////////////////////////////////////////////
void copyMatrix(const Transform& source, Matrix<4, 4>& dest)
{
    // Adopt 4x4 matrix as-is
    copyMatrix(source.getMatrix(), 4 * 4, dest.array);
}


////////////////////////////////////////////////////////////
void copyMatrix(const float* source, std::size_t elements, float* dest)
{
    std::copy(source, source + elements, dest);
}

} // namespace sf::priv
