130 lines
3.9 KiB
C++
130 lines
3.9 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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template <uint32_t D>
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struct LayeredViewport<D>::ViewportItem {
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ViewportItem ( const TileInfo<D>& parTInfo, Tyler<D>& parTyler );
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ViewportItem ( ViewportItem&& ) = default;
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TileInfo<D> tile_info;
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Viewport<D> viewport;
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int ref_count;
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bool operator== ( const TileInfo<D>& parOther ) const a_pure;
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};
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template <uint32_t D>
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LayeredViewport<D>::ViewportItem::ViewportItem (const TileInfo<D>& parTInfo, Tyler<D>& parTyler) :
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tile_info(parTInfo),
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viewport(parTyler, &tile_info),
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ref_count(1)
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{
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}
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template <uint32_t D>
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bool LayeredViewport<D>::ViewportItem::operator== (const TileInfo<D>& parOther) const {
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return tile_info == parOther;
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}
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template <uint32_t D>
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LayeredViewport<D>::LayeredViewport (Tyler<D>& parTyler) :
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m_tyler(parTyler)
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{
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for (const auto& layer : m_tyler) {
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this->on_layer(layer, true);
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}
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using std::placeholders::_1;
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using std::placeholders::_2;
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m_tyler_id = m_tyler.register_for_layeradd(std::bind(&LayeredViewport<D>::on_layer, this, _1, _2));
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}
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template <uint32_t D>
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LayeredViewport<D>::~LayeredViewport() noexcept {
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m_tyler.unregister_for_layeradd(m_tyler_id);
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}
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template <uint32_t D>
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LayeredViewport<D>& LayeredViewport<D>::operator+= (const coords_f& parValue) {
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for (auto& view : m_views) {
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view.viewport += parValue;
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}
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return *this;
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}
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template <uint32_t D>
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LayeredViewport<D>& LayeredViewport<D>::operator-= (const coords_f& parValue) {
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for (auto& view : m_views) {
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view.viewport -= parValue;
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}
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return *this;
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}
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template <uint32_t D>
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void LayeredViewport<D>::on_layer (const LayerBase<D>& parLayer, bool parAdded) {
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const TileInfo<D> tinfo(parLayer);
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auto it_found = std::find(m_views.begin(), m_views.end(), tinfo);
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if (parAdded) {
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if (m_views.end() == it_found) {
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m_views.push_back(ViewportItem(tinfo, m_tyler));
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}
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else {
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++it_found->ref_count;
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}
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}
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else {
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DK_ASSERT(m_views.end() != it_found);
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--it_found->ref_count;
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if (0 == it_found->ref_count) {
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m_views.erase(it_found);
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}
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}
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}
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template <uint32_t D>
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auto LayeredViewport<D>::begin() -> iterator {
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return iterator(m_views.begin(), std::bind(&LayeredViewport<D>::viewport, this, std::placeholders::_1));
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}
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template <uint32_t D>
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auto LayeredViewport<D>::begin() const -> const_iterator {
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return const_iterator(m_views.begin(), std::bind(&LayeredViewport<D>::viewport, this, std::placeholders::_1));
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}
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template <uint32_t D>
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auto LayeredViewport<D>::end() -> iterator {
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return iterator(m_views.end(), std::bind(&LayeredViewport<D>::viewport, this, std::placeholders::_1));
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}
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template <uint32_t D>
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auto LayeredViewport<D>::end() const -> const_iterator {
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return const_iterator(m_views.end(), std::bind(&LayeredViewport<D>::viewport, this, std::placeholders::_1));
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}
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template <uint32_t D>
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IterableViewport<D> LayeredViewport<D>::viewport (const LayerBase<D>& parLayer) {
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return const_cast<Viewport<D>&>(const_cast<const LayeredViewport<D>*>(this)->viewport(parLayer));
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}
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template <uint32_t D>
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const IterableViewport<D> LayeredViewport<D>::viewport (const LayerBase<D>& parLayer) const {
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const TileInfo<D> tinfo { parLayer.tile_size(), parLayer.map_size() };
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return IterableViewport<D>(&m_views[tinfo].first, &parLayer);
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}
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} //namespace dk
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