/usr/include/osgEarthSymbology/MeshFlattener is in libosgearth-dev 2.9.0+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | /* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2016 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTHSYMBOLOGY_MESH_FLATTENER
#define OSGEARTHSYMBOLOGY_MESH_FLATTENER
#include <osgEarthSymbology/Common>
namespace osgEarth { namespace Symbology
{
/**
* Prepares a scene graph for aggressive optimization. Removes things like names, user data, callbacks, etc.
* Use carefully.
*/
struct OSGEARTHSYMBOLOGY_EXPORT PrepareForOptimizationVisitor : public osg::NodeVisitor
{
PrepareForOptimizationVisitor();
virtual void apply(osg::Node& node);
};
/**
* Utility visitor to aid in flattening a scene graph. Collects a map of StateSet stacks to Geodes.
* Assumes that all transforms have already been removed from the scene graph.
*/
struct OSGEARTHSYMBOLOGY_EXPORT FlattenSceneGraphVisitor : public osg::NodeVisitor
{
FlattenSceneGraphVisitor();
virtual void apply(osg::Node& node);
virtual void apply(osg::Geode& geode);
void pushStateSet(osg::StateSet* stateSet);
void popStateSet();
/**
* Build the flattened scene graph from the statesets and geodes.
*/
osg::Node* build();
typedef std::vector< osg::ref_ptr< osg::StateSet > > StateSetStack;
typedef std::vector< osg::ref_ptr< osg::Geometry > > GeometryVector;
StateSetStack _ssStack;
typedef std::map< StateSetStack, GeometryVector > StateSetStackToGeometryMap;
StateSetStackToGeometryMap _geometries;
bool _mergeGeometry;
unsigned _maxVertsPerCluster;
};
/**
* Flattens "flatten" the given scene graph, turning it into a
* a very basic scene graph consisting of a group at the top with a list of geodes
* each consisting of as small of a number of drawables as possible.
*
* Limitations:
* This will only work on relatively simple scene graphs consisting of MatrixTransforms, Groups, Geodes, etc.
* If your scene graph constains things likes AutoTransforms, LightPointNodes, Sequences, etc it will not preserve them.
*/
class OSGEARTHSYMBOLOGY_EXPORT MeshFlattener
{
public:
static void run( osg::Group* group );
/** Run the flattener and indicate the target vertex cound for the MergeGeometry stage. */
static void run(osg::Group* group, unsigned maxVertsPerCluster);
};
} } // namespace osgEarth::Symbology
#endif // OSGEARTHSYMBOLOGY_MESH_FLATTENER
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