111 lines
3.0 KiB
C++
111 lines
3.0 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library 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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* OpenSceneGraph Public License for more details.
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*/
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#include <osgTerrain/Terrain>
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#include <osgTerrain/DisplacementMappingTechnique>
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using namespace osgTerrain;
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/////////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// DisplacementMappingTechnique
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//
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DisplacementMappingTechnique::DisplacementMappingTechnique()
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{
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// OSG_NOTICE<<"DisplacementMappingTechnique::DisplacementMappingTechnique()"<<std::endl;
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}
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DisplacementMappingTechnique::DisplacementMappingTechnique(const DisplacementMappingTechnique& st,const osg::CopyOp& copyop):
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osgTerrain::TerrainTechnique(st, copyop)
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{
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}
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DisplacementMappingTechnique::~DisplacementMappingTechnique()
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{
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}
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void DisplacementMappingTechnique::init(int /*dirtyMask*/, bool /*assumeMultiThreaded*/)
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{
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if (!_terrainTile) return;
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if (!_terrainTile->getTerrain()) return;
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GeometryPool* geometryPool = _terrainTile->getTerrain()->getGeometryPool();
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_transform = geometryPool->getTileSubgraph(_terrainTile);
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// set tile as no longer dirty.
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_terrainTile->setDirtyMask(0);
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}
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void DisplacementMappingTechnique::update(osgUtil::UpdateVisitor* uv)
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{
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if (_terrainTile) _terrainTile->osg::Group::traverse(*uv);
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if (_transform.valid()) _transform->accept(*uv);
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}
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void DisplacementMappingTechnique::cull(osgUtil::CullVisitor* cv)
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{
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if (_transform.valid()) _transform->accept(*cv);
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}
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void DisplacementMappingTechnique::traverse(osg::NodeVisitor& nv)
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{
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if (!_terrainTile) return;
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// if app traversal update the frame count.
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if (nv.getVisitorType()==osg::NodeVisitor::UPDATE_VISITOR)
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{
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// if (_terrainTile->getDirty()) _terrainTile->init(_terrainTile->getDirtyMask(), false);
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osgUtil::UpdateVisitor* uv = nv.asUpdateVisitor();
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if (uv)
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{
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update(uv);
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return;
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}
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}
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else if (nv.getVisitorType()==osg::NodeVisitor::CULL_VISITOR)
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{
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osgUtil::CullVisitor* cv = nv.asCullVisitor();
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if (cv)
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{
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cull(cv);
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return;
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}
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}
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{
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if (_transform.valid())
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{
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_transform->accept(nv);
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}
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}
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}
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void DisplacementMappingTechnique::cleanSceneGraph()
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{
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}
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void DisplacementMappingTechnique::releaseGLObjects(osg::State* state) const
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{
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if (_transform.valid())
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{
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// OSG_NOTICE<<"DisplacementMappingTechnique::releaseGLObjects()"<<std::endl;
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_transform->releaseGLObjects(state);
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}
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}
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