2f41234793
geometrytechnique in submethods to made more easy the inheritance between the user and osg-class. This is a first step to add more functions in osgTerrain. Maybe the subdivision of the method have to be in the terraintechnique because is the base class of GeometryTechnique. If Robert or anyone think that this is better i change this class too."
117 lines
3.6 KiB
C++
117 lines
3.6 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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#ifndef OSGTERRAIN_GEOMETRYTECHNIQUE
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#define OSGTERRAIN_GEOMETRYTECHNIQUE 1
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#include <osg/MatrixTransform>
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#include <osg/Geode>
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#include <osg/Geometry>
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#include <osgTerrain/TerrainTechnique>
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#include <osgTerrain/Locator>
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namespace osgTerrain {
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class OSGTERRAIN_EXPORT GeometryTechnique : public TerrainTechnique
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{
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public:
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GeometryTechnique();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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GeometryTechnique(const GeometryTechnique&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
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virtual void init();
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virtual Locator* computeMasterLocator();
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virtual const osg::Vec3d computeCenterModel(Locator* masterLocator);
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virtual void generateGeometry(Locator* masterLocator, const osg::Vec3d& centerModel);
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virtual void applyColorLayers();
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virtual void applyTransferFunctions();
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virtual void applyTransparency();
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virtual void smoothGeometry();
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virtual void update(osgUtil::UpdateVisitor* nv);
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virtual void cull(osgUtil::CullVisitor* nv);
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/** Traverse the terain subgraph.*/
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virtual void traverse(osg::NodeVisitor& nv);
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virtual void cleanSceneGraph();
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virtual void dirty();
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void setFilterBias(float filterBias);
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float getFilterBias() const { return _filterBias; }
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void setFilterWidth(float filterWidth);
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float getFilterWidth() const { return _filterWidth; }
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void setFilterMatrix(const osg::Matrix3& matrix);
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osg::Matrix3& getFilterMatrix() { return _filterMatrix; }
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const osg::Matrix3& getFilterMatrix() const { return _filterMatrix; }
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enum FilterType
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{
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GAUSSIAN,
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SMOOTH,
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SHARPEN
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};
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void setFilterMatrixAs(FilterType filterType);
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private:
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virtual ~GeometryTechnique();
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struct BufferData
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{
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osg::ref_ptr<osg::MatrixTransform> _transform;
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osg::ref_ptr<osg::Geode> _geode;
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osg::ref_ptr<osg::Geometry> _geometry;
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};
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unsigned int _currentReadOnlyBuffer;
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unsigned int _currentWriteBuffer;
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BufferData _bufferData[2];
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void swapBuffers();
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inline BufferData& getReadOnlyBuffer() { return _bufferData[_currentReadOnlyBuffer]; }
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inline BufferData& getWriteBuffer() { return _bufferData[_currentWriteBuffer]; }
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float _filterBias;
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osg::ref_ptr<osg::Uniform> _filterBiasUniform;
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float _filterWidth;
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osg::ref_ptr<osg::Uniform> _filterWidthUniform;
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osg::Matrix3 _filterMatrix;
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osg::ref_ptr<osg::Uniform> _filterMatrixUniform;
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};
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}
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#endif
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