64 lines
2.4 KiB
C++
64 lines
2.4 KiB
C++
/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTHSYMBOLOGY_MESH_CONSOLIDATOR
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#define OSGEARTHSYMBOLOGY_MESH_CONSOLIDATOR
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#include <osgEarth/Common>
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#include <osg/Geode>
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#include <osg/Geometry>
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namespace osgEarth { namespace Util
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{
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/**
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* Consolidates all the like-moded primitive sets in a geometry.
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*
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* This utility will attempt to extract all triangular primitives
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* from a geometry and regroup them into a smaller number of primitive sets. For
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* example, if you have a geometry with triangle strips, fans, and triangles, it will
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* combines them into one a minimal number of primitive sets containing GL_TRIANGLES.
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*
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* Limitations:
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*
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* - Will not operate on geometry with vertex attributes.
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*
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* - For geometries with tex coord arrays, all geometries must have the same configuration
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* (i.e., number of texcoord arrays, and the same unit bindings).
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*/
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class OSGEARTH_EXPORT MeshConsolidator
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{
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public:
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/**
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* Converts all polygon primitive sets (tristrips, trifans, polygons, etc)
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* into GL_TRIANGLES. Similar to the IndexMeshVisitor, except that this
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* retians user data pointers on the primsets.
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*/
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static void convertToTriangles( osg::Geometry& geom, bool force=false );
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/**
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* Consolidates compatible geometries in the geode. First runs the
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* convertToTriangles method on each Geometry if applicable, them combines
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* geometies into a minimal set for performance purposes.
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*/
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static void run( osg::Geode& geode );
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};
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} }
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#endif // OSGEARTHSYMBOLOGY_MESH_CONSOLIDATOR
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