libcruft-util/geom/aabb.cpp

/*
 * 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 2015-2017 Danny Robson <danny@nerdcruft.net>
 */


#include "aabb.hpp"

#include "iostream.hpp"
#include "../coord/iostream.hpp"
#include "../debug.hpp"

using util::geom::aabb;


///////////////////////////////////////////////////////////////////////////////
template <>
std::array<
    util::point3f,8
>
aabb<3,float>::vertices (void) const noexcept
{
    return {{
        { lo.x, lo.y, lo.z },
        { lo.x, lo.y, hi.z },
        { lo.x, hi.y, lo.z },
        { lo.x, hi.y, hi.z },
        { hi.x, lo.y, lo.z },
        { hi.x, lo.y, hi.z },
        { hi.x, hi.y, lo.z },
        { hi.x, hi.y, hi.z },
    }};
}


///////////////////////////////////////////////////////////////////////////////
namespace util::debug {
    template <size_t S, typename T>
    struct validator<aabb<S,T>> {
        static bool is_valid (const aabb<S,T> &b)
        {
            return all (b.lo <= b.hi);
        }
    };
}


//-----------------------------------------------------------------------------
template <size_t S, typename T>
std::ostream&
util::geom::operator<< (std::ostream &os, util::geom::aabb<S,T> b)
{
    return os << "[ " << b.lo << ", " << b.hi << " ]";
}


//-----------------------------------------------------------------------------
#define INSTANTIATE_S_T(S,T)                             \
namespace util::geom { template struct aabb<S,T>; }      \
template bool util::debug::is_valid (const aabb<S,T>&);  \
template std::ostream& util::geom::operator<< (std::ostream&, aabb<S,T>);

#define INSTANTIATE(T)  \
INSTANTIATE_S_T(2,T)    \
INSTANTIATE_S_T(3,T)

INSTANTIATE( int32_t)
INSTANTIATE( int64_t)
INSTANTIATE(uint32_t)
INSTANTIATE(uint64_t)
INSTANTIATE(float)
INSTANTIATE(double)