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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>
*
* Vector and related operations
*/
#include "vector.h"
#include <libcamera/base/log.h>
/**
* \file vector.h
* \brief Vector class
*/
namespace libcamera {
LOG_DEFINE_CATEGORY(Vector)
namespace ipa {
/**
* \class Vector
* \brief Vector class
* \tparam T Type of numerical values to be stored in the vector
* \tparam Rows Number of dimension of the vector (= number of elements)
*/
/**
* \fn Vector::Vector()
* \brief Construct an uninitialized vector
*/
/**
* \fn Vector::Vector(T scalar)
* \brief Construct a vector filled with a \a scalar value
* \param[in] scalar The scalar value
*/
/**
* \fn Vector::Vector(const std::array<T, Rows> &data)
* \brief Construct vector from supplied data
* \param data Data from which to construct a vector
*
* The size of \a data must be equal to the dimension size Rows of the vector.
*/
/**
* \fn T Vector::operator[](size_t i) const
* \brief Index to an element in the vector
* \param i Index of element to retrieve
* \return Element at index \a i from the vector
*/
/**
* \fn T &Vector::operator[](size_t i)
* \copydoc Vector::operator[](size_t i) const
*/
/**
* \fn Vector::operator-() const
* \brief Negate a Vector by negating both all of its coordinates
* \return The negated vector
*/
/**
* \fn Vector::operator-(Vector const &other) const
* \brief Subtract one vector from another
* \param[in] other The other vector
* \return The difference of \a other from this vector
*/
/**
* \fn Vector::operator+()
* \brief Add two vectors together
* \param[in] other The other vector
* \return The sum of the two vectors
*/
/**
* \fn Vector::operator*(const Vector<T, Rows> &other) const
* \brief Compute the dot product
* \param[in] other The other vector
* \return The dot product of the two vectors
*/
/**
* \fn Vector::operator*(T factor) const
* \brief Multiply the vector by a scalar
* \param[in] factor The factor
* \return The vector multiplied by \a factor
*/
/**
* \fn Vector::operator/()
* \brief Divide the vector by a scalar
* \param[in] factor The factor
* \return The vector divided by \a factor
*/
/**
* \fn constexpr T &Vector::x()
* \brief Convenience function to access the first element of the vector
* \return The first element of the vector
*/
/**
* \fn constexpr T &Vector::y()
* \brief Convenience function to access the second element of the vector
* \return The second element of the vector
*/
/**
* \fn constexpr T &Vector::z()
* \brief Convenience function to access the third element of the vector
* \return The third element of the vector
*/
/**
* \fn constexpr const T &Vector::x() const
* \copydoc Vector::x()
*/
/**
* \fn constexpr const T &Vector::y() const
* \copydoc Vector::y()
*/
/**
* \fn constexpr const T &Vector::z() const
* \copydoc Vector::z()
*/
/**
* \fn constexpr T &Vector::r()
* \brief Convenience function to access the first element of the vector
* \return The first element of the vector
*/
/**
* \fn constexpr T &Vector::g()
* \brief Convenience function to access the second element of the vector
* \return The second element of the vector
*/
/**
* \fn constexpr T &Vector::b()
* \brief Convenience function to access the third element of the vector
* \return The third element of the vector
*/
/**
* \fn constexpr const T &Vector::r() const
* \copydoc Vector::r()
*/
/**
* \fn constexpr const T &Vector::g() const
* \copydoc Vector::g()
*/
/**
* \fn constexpr const T &Vector::b() const
* \copydoc Vector::b()
*/
/**
* \fn Vector::length2()
* \brief Get the squared length of the vector
* \return The squared length of the vector
*/
/**
* \fn Vector::length()
* \brief Get the length of the vector
* \return The length of the vector
*/
/**
* \fn Vector<T, Rows> operator*(const Matrix<T, Rows, Cols> &m, const Vector<T, Cols> &v)
* \brief Multiply a matrix by a vector
* \tparam T Numerical type of the contents of the matrix and vector
* \tparam Rows The number of rows in the matrix
* \tparam Cols The number of columns in the matrix (= rows in the vector)
* \param m The matrix
* \param v The vector
* \return Product of matrix \a m and vector \a v
*/
/**
* \typedef RGB
* \brief A Vector of 3 elements representing an RGB pixel value
*/
/**
* \fn bool operator==(const Vector<T, Rows> &lhs, const Vector<T, Rows> &rhs)
* \brief Compare vectors for equality
* \return True if the two vectors are equal, false otherwise
*/
/**
* \fn bool operator!=(const Vector<T, Rows> &lhs, const Vector<T, Rows> &rhs)
* \brief Compare vectors for inequality
* \return True if the two vectors are not equal, false otherwise
*/
#ifndef __DOXYGEN__
bool vectorValidateYaml(const YamlObject &obj, unsigned int size)
{
if (!obj.isList())
return false;
if (obj.size() != size) {
LOG(Vector, Error)
<< "Wrong number of values in YAML vector: expected "
<< size << ", got " << obj.size();
return false;
}
return true;
}
#endif /* __DOXYGEN__ */
} /* namespace ipa */
} /* namespace libcamera */
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