99 lines
3.3 KiB
Plaintext
99 lines
3.3 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTH_DRAPING_CULL_SET
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#define OSGEARTH_DRAPING_CULL_SET
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#include <osgEarth/Common>
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#include <osgEarth/Containers>
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#include <osgEarth/DrapeableNode>
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#include <osg/Camera>
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#include <osg/ObserverNodePath>
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#include <queue>
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namespace osgEarth { namespace Util
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{
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/**
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* Culling set for tracking groups whose contents should be "draped",
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* i.e. rendered to a texture and projected onto the terrain.
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* Internal object - do not use directly. Use a DrapeableNode instead.
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*/
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class OSGEARTH_INTERNAL DrapingCullSet
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{
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public:
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struct Entry
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{
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osg::observer_ptr<DrapeableNode> _node;
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osg::ref_ptr<osg::RefMatrix> _matrix;
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osg::ObserverNodePath _path;
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int _frame;
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};
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public:
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DrapingCullSet();
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~DrapingCullSet() { } // not virtual
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/** Pushes a node and its matrix into the cull set */
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void push(DrapeableNode* node, const osg::NodePath& path, const osg::FrameStamp* stamp);
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/** Runs a node visitor on the cull set, optionally popping as it goes along. */
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void accept(osg::NodeVisitor& nv);
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//! Bounds of the latest set
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const osg::BoundingSphere& getBound() const;
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private:
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struct FrameData {
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FrameData() : _acceptFrame(-1) { }
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int _acceptFrame;
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std::vector<Entry> _entries;
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osg::BoundingSphere _bs;
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};
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using SortedFrameData = std::map<int, FrameData>;
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SortedFrameData _data;
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std::mutex _data_mutex;
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};
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/**
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* Houses all the active DrapingCullSets under an osgEarth TerrainEngine.
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* Internal node - so not use directly.
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*/
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class OSGEARTH_INTERNAL DrapingManager
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{
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public:
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DrapingManager();
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//! Gets the draping cull set associated with a camera.
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DrapingCullSet& get(const osg::Camera*);
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//! Sets the render bin number for DrapingCameras.
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void setRenderBinNumber(int value) { _renderBinNum = value; }
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int getRenderBinNumber() const { return _renderBinNum; }
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private:
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PerObjectFastMap<const osg::Camera*, DrapingCullSet> _sets;
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int _renderBinNum;
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};
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} } // namespace osgEarth
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#endif // OSGEARTH_DRAPING_CULL_SET
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