/*
* Copyright (C) 2020 Christopher J. Howard
*
* This file is part of Antkeeper source code.
*
* Antkeeper source code is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Antkeeper source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Antkeeper source code. If not, see .
*/
#ifndef ANTKEEPER_MATH_HPP
#define ANTKEEPER_MATH_HPP
#include
#include
#include
using namespace vmq::operators;
inline float frand(float start, float end)
{
float f = (float)std::rand() / RAND_MAX;
return start + f * (end - start);
}
namespace math {
/**
* Reinterprets data as an `N`-dimensional vector of type `T`.
*
* @tparam N Number of vector dimensions.
* @tparam T Scalar type.
* @param data Data to reinterpret.
*/
template
inline vmq::vector& as_vector(T& data)
{
static_assert(std::is_pod>::value);
return reinterpret_cast&>(data);
}
/**
* Reinterprets data as an `NxM` matrix of type `T`.
*
* @tparam N Number of columns.
* @tparam M Number of rows.
* @tparam T Element type.
* @param data Data to reinterpret.
*/
template
inline vmq::matrix& as_matrix(T& data)
{
static_assert(std::is_pod>::value);
return reinterpret_cast&>(data);
}
template
vmq::vector project_on_plane(const vmq::vector& v, const vmq::vector& p, const vmq::vector& n)
{
return v - n * vmq::dot(v - p, n);
}
} // namespace math
#endif // ANTKEEPER_MATH_HPP