55 lines
2.1 KiB
C++
55 lines
2.1 KiB
C++
/* Copyright 2015, Michele Santullo
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* This file is part of DoorKeeper.
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*
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* DoorKeeper is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DoorKeeper is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DoorKeeper. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace dk {
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namespace implem {
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template <typename T, uint32_t D>
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class data_fetcher<T, D, true> {
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public:
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typedef typename BaseMapSource<D>::coords coords;
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static void fetch ( std::vector<T>& parOut, const coords& parFrom, const coords& parTo, std::size_t parCount, BaseMapSource<D>& parMapSrc ) {
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parOut.resize(parCount);
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parMapSrc.fetch_raw(reinterpret_cast<char*>(parOut.data()), parFrom, parTo, sizeof(T) * parCount);
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}
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};
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template <typename T, uint32_t D>
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class data_fetcher<T, D, false> {
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public:
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typedef typename BaseMapSource<D>::coords coords;
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static void fetch ( std::vector<T>& parOut, const coords& parFrom, const coords& parTo, std::size_t parCount, BaseMapSource<D>& parMapSrc ) {
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parOut.reserve(parCount);
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DK_ASSERT(false); //not implemented
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(void)parOut;
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(void)parFrom;
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(void)parTo;
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(void)parMapSrc;
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}
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};
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} //namespace implem
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template <uint32_t D>
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template <typename T>
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void BaseMapSource<D>::fetch (std::vector<T>& parOut, const coords& parFrom, const coords& parTo) {
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const auto tile_count = tile_volume<D>(parTo - parFrom);
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const std::size_t casted_tile_count = static_cast<std::size_t>(tile_count);
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DK_ASSERT(static_cast<decltype(tile_count)>(casted_tile_count) == tile_count);
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parOut.reserve(casted_tile_count);
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parOut.clear();
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implem::data_fetcher<T, D>::fetch(parOut, parFrom, parTo, casted_tile_count, *this);
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}
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} //namespace dk
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