libcruft-util/point.cpp

104 lines
2.9 KiB
C++

/*
* This file is part of libgim.
*
* libgim 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.
*
* libgim 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 libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
*/
#include "point.hpp"
#include "debug.hpp"
#include "maths.hpp"
#include <cmath>
#include <cstdlib>
using namespace std;
///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
util::vector<S,T>
util::point<S,T>::to (const point<S,T> &rhs) const
{
util::vector<S,T> out;
for (size_t i = 0; i < S; ++i)
out.data[i] = rhs.data[i] - this->data[i];
return out;
}
//-----------------------------------------------------------------------------
template <size_t S, typename T>
util::vector<S,T>
util::point<S,T>::from (const point<S,T> &rhs) const
{
util::vector<S,T> out;
for (size_t i = 0; i < S; ++i)
out.data[i] = this->data[i] - rhs.data[i];
return out;
}
///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
void
util::point<S,T>::sanity (void) const {
CHECK (std::all_of (begin (this->data),
end (this->data),
[] (double i) { return !std::isnan (i); }));
}
//-----------------------------------------------------------------------------
template <size_t S, typename T>
const util::point<S,T> util::point<S,T>::ORIGIN (T {0});
//-----------------------------------------------------------------------------
template <size_t S, typename T>
std::ostream&
util::operator<< (std::ostream &os, const util::point<S,T> &p) {
os << "point" << S << "(";
os << p.data[0];
for (size_t i = 1; i < S; ++i)
os << ", " << p.data[i];
os << ")";
return os;
}
//-----------------------------------------------------------------------------
#define INSTANTIATE_S_T(S,T) \
template struct util::point<S,T>; \
template std::ostream& util::operator<< (std::ostream &os, const util::point<S,T>&); \
#define INSTANTIATE(T) \
INSTANTIATE_S_T(1,T) \
INSTANTIATE_S_T(2,T) \
INSTANTIATE_S_T(3,T) \
INSTANTIATE_S_T(4,T)
INSTANTIATE(int32_t)
INSTANTIATE(uint32_t)
INSTANTIATE(int64_t)
INSTANTIATE(uint64_t)
INSTANTIATE(float)
INSTANTIATE(double)