100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
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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 (at
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* your option) any later version. The full license is in the 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, but
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* 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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//
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// Copyright(c) 2008 Skew Matrix Software LLC.
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//
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#ifndef __FLTEXP_VERTEX_PALETTE_MANAGER_H__
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#define __FLTEXP_VERTEX_PALETTE_MANAGER_H__ 1
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#include "DataOutputStream.h"
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#include "ExportOptions.h"
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#include <osg/Array>
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#include <fstream>
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#include <map>
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namespace osg {
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class Geometry;
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}
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namespace flt
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{
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/*!
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Manages writing the Vertex Palette record during export.
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Maintains a map to ensure that instanced VertexArray data is only
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written once to the palette. Writes the palette record to a temp
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file and copies it to FltExportVisitor::_dos after the scene graph
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has been completely walked.
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*/
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class VertexPaletteManager
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{
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public:
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VertexPaletteManager( const ExportOptions& fltOpt );
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~VertexPaletteManager();
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void add( const osg::Geometry& geom );
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void add( const osg::Vec3Array* v, const osg::Vec4Array* c,
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const osg::Vec3Array* n, const osg::Vec2Array* t,
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bool colorPerVertex, bool normalPerVertex, bool allowSharing=true );
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unsigned int byteOffset( unsigned int idx ) const;
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void write( DataOutputStream& dos ) const;
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protected:
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typedef enum {
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VERTEX_C,
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VERTEX_CN,
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VERTEX_CNT,
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VERTEX_CT
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} PaletteRecordType;
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static PaletteRecordType recordType( const osg::Array* v, const osg::Array* c,
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const osg::Array* n, const osg::Array* t );
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unsigned int recordSize( PaletteRecordType recType );
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void writeRecords( const osg::Vec3Array* v, const osg::Vec4Array* c,
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const osg::Vec3Array* n, const osg::Vec2Array* t,
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bool colorPerVertex, bool normalPerVertex );
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unsigned int _currentSizeBytes;
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struct ArrayInfo {
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ArrayInfo();
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unsigned int _byteStart;
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unsigned int _idxSizeBytes;
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unsigned int _idxCount;
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};
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ArrayInfo* _current;
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ArrayInfo _nonShared;
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typedef std::map< const osg::Array*, ArrayInfo > ArrayMap;
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ArrayMap _arrayMap;
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mutable std::ofstream _verticesStr;
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DataOutputStream* _vertices;
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std::string _verticesTempName;
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const ExportOptions& _fltOpt;
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};
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}
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#endif
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