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C++ Geometry::accept方法代码示例

本文整理汇总了C++中osg::Geometry::accept方法的典型用法代码示例。如果您正苦于以下问题:C++ Geometry::accept方法的具体用法?C++ Geometry::accept怎么用?C++ Geometry::accept使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在osg::Geometry的用法示例。


在下文中一共展示了Geometry::accept方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: switch

void osgToy::FacetingVisitor::facet( osg::Geometry& geom )
{
    // count #surfaces, exit if none
    osg::Geometry::PrimitiveSetList& primitives = geom.getPrimitiveSetList();
    osg::Geometry::PrimitiveSetList::iterator itr;
    unsigned int numSurfacePrimitives=0;
    for(itr=primitives.begin();
        itr!=primitives.end();
        ++itr)
    {
        switch((*itr)->getMode())
        {
            case osg::PrimitiveSet::TRIANGLES:
            case osg::PrimitiveSet::TRIANGLE_STRIP:
            case osg::PrimitiveSet::TRIANGLE_FAN:
            case osg::PrimitiveSet::QUADS:
            case osg::PrimitiveSet::QUAD_STRIP:
            case osg::PrimitiveSet::POLYGON:
                ++numSurfacePrimitives;
                break;

            default:
                break;
        }
    }
    if (!numSurfacePrimitives) return;

    // exit if no vertices
    osg::Vec3Array *coords = dynamic_cast<osg::Vec3Array*>(geom.getVertexArray());
    if (!coords || !coords->size()) return;
    
    // generate the normals
    osg::Vec3Array *normals = new osg::Vec3Array(coords->size());
    osg::TriangleIndexFunctor<FacetingOperator> ftif;
    ftif.set( coords, normals );
    geom.accept(ftif);

    geom.setNormalArray( normals );
    geom.setNormalIndices( geom.getVertexIndices() );
    geom.setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
    geom.dirtyDisplayList();
}
开发者ID:mew-cx,项目名称:osgtoy,代码行数:42,代码来源:FacetingVisitor.cpp

示例2: if

void
MeshConsolidator::convertToTriangles( osg::Geometry& geom, bool force )
{
    if ( !force && !canOptimize(geom) )
        return;

    osg::Geometry::PrimitiveSetList& primSets = geom.getPrimitiveSetList();
    osg::Geometry::PrimitiveSetList  triSets, nonTriSets;

    for( osg::Geometry::PrimitiveSetList::iterator i = primSets.begin(); i != primSets.end(); ++i )
    {
        osg::PrimitiveSet* pset = i->get();
        switch( pset->getMode() )
        {
        case osg::PrimitiveSet::TRIANGLES:
        case osg::PrimitiveSet::TRIANGLE_STRIP:
        case osg::PrimitiveSet::TRIANGLE_FAN:
        case osg::PrimitiveSet::QUADS:
        case osg::PrimitiveSet::QUAD_STRIP:
        case osg::PrimitiveSet::POLYGON:
            triSets.push_back( pset );
            break;

        default:
            nonTriSets.push_back( pset );
        }
    }

    if ( triSets.size() > 0 )
    {
        // we are assuming at this point that all the primitive sets in a single geometry
        // share a single user data structure.
        osg::Referenced* sharedUserData = triSets[0]->getUserData();

        osg::Array* vertexArray = geom.getVertexArray();
        unsigned numVerts = vertexArray->getNumElements();
        osg::Geometry::PrimitiveSetList newPrimSets;

        if ( numVerts < 0x100 )
        {
            osg::TriangleIndexFunctor< Collector<osg::DrawElementsUByte> > collector;
            collector._newPrimSets = &newPrimSets;
            collector._maxSize = 0xFF;
            geom.accept( collector );
        }
        else if ( numVerts < 0x10000 )
        {
            osg::TriangleIndexFunctor< Collector<osg::DrawElementsUShort> > collector;
            collector._newPrimSets = &newPrimSets;
            collector._maxSize = 0xFFFF;
            geom.accept( collector );
        }
        else
        {
#ifdef OSG_GLES2_AVAILABLE
            // GLES only supports UShort, not UInt
            osg::TriangleIndexFunctor< Collector<osg::DrawElementsUShort> > collector;
            collector._newPrimSets = &newPrimSets;
            collector._maxSize = 0xFFFF;
            geom.accept( collector );
#else
            osg::TriangleIndexFunctor< Collector<osg::DrawElementsUInt> > collector;
            collector._newPrimSets = &newPrimSets;
            collector._maxSize = 0xFFFFFFFF;
            geom.accept( collector );
#endif
        }

        for( osg::Geometry::PrimitiveSetList::iterator i = newPrimSets.begin(); i != newPrimSets.end(); ++i )
        {
            i->get()->setUserData( sharedUserData );
            nonTriSets.push_back( i->get() );
        }
    }

    geom.setPrimitiveSetList( nonTriSets );
}
开发者ID:RealRui,项目名称:osgearth,代码行数:77,代码来源:MeshConsolidator.cpp


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