/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Copyright 2011-2016 Danny Robson <danny@nerdcruft.net>
 */

#include "./point.hpp"

#include "./debug.hpp"

#include <cstdlib>

using util::point;


///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
util::vector<S,T>
util::point<S,T>::to (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 (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;
}


///////////////////////////////////////////////////////////////////////////////
namespace util::debug  {
    template <size_t S, typename T>
    struct validator<point<S,T>> {
        static bool is_valid (const point<S,T> &p)
        {
            // ensure we don't have a nan anywhere
            return std::all_of (p.cbegin (), p.cend (), [] (auto i) {
                return !(std::is_floating_point<T>::value && std::isnan (i));
            });
        }
    };
}


//-----------------------------------------------------------------------------
#define INSTANTIATE_S_T(S,T)        \
template struct util::point<S,T>;   \
template bool util::debug::is_valid (const point<S,T>&); \
template struct util::debug::validator<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(int16_t)
INSTANTIATE(int32_t)
INSTANTIATE(int64_t)

INSTANTIATE(uint16_t)
INSTANTIATE(uint32_t)
INSTANTIATE(uint64_t)

INSTANTIATE(float)
INSTANTIATE(double)