mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2020, the SerenityOS developers.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
#include <initializer_list>
|
|
|
|
namespace Gfx {
|
|
|
|
template<size_t N, typename T>
|
|
class Matrix {
|
|
public:
|
|
static constexpr size_t Size = N;
|
|
|
|
Matrix() = default;
|
|
Matrix(std::initializer_list<T> elements)
|
|
{
|
|
ASSERT(elements.size() == N * N);
|
|
size_t i = 0;
|
|
for (auto& element : elements) {
|
|
m_elements[i / N][i % N] = element;
|
|
++i;
|
|
}
|
|
}
|
|
|
|
template<typename... Args>
|
|
Matrix(Args... args)
|
|
: Matrix({ (T)args... })
|
|
{
|
|
}
|
|
|
|
Matrix(const Matrix& other)
|
|
{
|
|
__builtin_memcpy(m_elements, other.elements(), sizeof(T) * N * N);
|
|
}
|
|
|
|
auto elements() const { return m_elements; }
|
|
auto elements() { return m_elements; }
|
|
|
|
Matrix operator*(const Matrix& other) const
|
|
{
|
|
Matrix product;
|
|
for (int i = 0; i < N; ++i) {
|
|
for (int j = 0; j < N; ++j) {
|
|
auto& element = product.m_elements[i][j];
|
|
|
|
if constexpr (N == 4) {
|
|
element = m_elements[0][j] * other.m_elements[i][0]
|
|
+ m_elements[1][j] * other.m_elements[i][1]
|
|
+ m_elements[2][j] * other.m_elements[i][2]
|
|
+ m_elements[3][j] * other.m_elements[i][3];
|
|
} else if constexpr (N == 3) {
|
|
element = m_elements[0][j] * other.m_elements[i][0]
|
|
+ m_elements[1][j] * other.m_elements[i][1]
|
|
+ m_elements[2][j] * other.m_elements[i][2];
|
|
} else if constexpr (N == 2) {
|
|
element = m_elements[0][j] * other.m_elements[i][0]
|
|
+ m_elements[1][j] * other.m_elements[i][1];
|
|
} else if constexpr (N == 1) {
|
|
element = m_elements[0][j] * other.m_elements[i][0];
|
|
} else {
|
|
T value {};
|
|
for (size_t k = 0; k < N; ++k)
|
|
value += m_elements[k][j] * other.m_elements[i][k];
|
|
|
|
element = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
return product;
|
|
}
|
|
|
|
private:
|
|
T m_elements[N][N];
|
|
};
|
|
|
|
}
|
|
|
|
using Gfx::Matrix;
|