117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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/TerrainNode>
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using namespace osg;
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using namespace osgTerrain;
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TerrainNode::TerrainNode():
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_requiresNormals(true),
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_treatBoundariesToValidDataAsDefaultValue(false)
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{
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setNumChildrenRequiringUpdateTraversal(1);
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}
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TerrainNode::TerrainNode(const TerrainNode& terrain,const osg::CopyOp& copyop):
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Group(terrain,copyop),
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_elevationLayer(terrain._elevationLayer),
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_colorLayers(terrain._colorLayers),
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_requiresNormals(terrain._requiresNormals),
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_treatBoundariesToValidDataAsDefaultValue(terrain._treatBoundariesToValidDataAsDefaultValue)
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{
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setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+1);
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if (terrain.getTerrainTechnique()) setTerrainTechnique(dynamic_cast<TerrainTechnique*>(terrain.getTerrainTechnique()->cloneType()));
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}
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TerrainNode::~TerrainNode()
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{
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}
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void TerrainNode::traverse(osg::NodeVisitor& nv)
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{
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if (_terrainTechnique.valid())
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{
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_terrainTechnique->traverse(nv);
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}
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else
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{
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osg::Group::traverse(nv);
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}
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}
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void TerrainNode::init()
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{
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if (_terrainTechnique.valid() && _terrainTechnique->isDirty())
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{
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_terrainTechnique->init();
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}
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}
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void TerrainNode::setTerrainTechnique(osgTerrain::TerrainTechnique* terrainTechnique)
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{
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if (_terrainTechnique == terrainTechnique) return;
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if (_terrainTechnique.valid()) _terrainTechnique->_terrainNode = 0;
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_terrainTechnique = terrainTechnique;
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if (_terrainTechnique.valid()) _terrainTechnique->_terrainNode = this;
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}
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void TerrainNode::setElevationLayer(osgTerrain::Layer* layer)
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{
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_elevationLayer = layer;
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}
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void TerrainNode::setColorLayer(unsigned int i, osgTerrain::Layer* layer)
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{
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if (_colorLayers.size() <= i) _colorLayers.resize(i+1);
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_colorLayers[i].layer = layer;
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}
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void TerrainNode::setColorTransferFunction(unsigned int i, osg::TransferFunction* tf)
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{
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if (_colorLayers.size() <= i) _colorLayers.resize(i+1);
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_colorLayers[i].transferFunction = tf;
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}
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void TerrainNode::setColorFilter(unsigned int i, Filter filter)
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{
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if (_colorLayers.size() <= i) _colorLayers.resize(i+1);
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_colorLayers[i].filter = filter;
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}
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osg::BoundingSphere TerrainNode::computeBound() const
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{
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osg::BoundingSphere bs;
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if (_elevationLayer.valid()) bs.expandBy(_elevationLayer->computeBound());
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for(Layers::const_iterator itr = _colorLayers.begin();
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itr != _colorLayers.end();
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++itr)
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{
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if (itr->layer.valid()) bs.expandBy(itr->layer->computeBound());
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}
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return bs;
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}
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