Class CollectTriangles

plugins/openscenegraph/io/OSGReader.cpp:47–179

{

struct CollectTriangles
{
    CollectTriangles()
    {
        verts = new osg::Vec3Array();
    }
#ifdef OSG_VERSION_GREATER_THAN
#if OSG_VERSION_GREATER_THAN(3,4,0)
    inline void operator () (const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3)
#elif OSG_VERSION_GREATER_THAN(3, 2, 0)
    inline void operator () (const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3, bool treatVertexDataAsTemporary)
#else
    inline void operator () (const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3)
#endif
#else
    inline void operator () (const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3)
#endif
    {
        verts->push_back(v1);
        verts->push_back(v2);
        verts->push_back(v3);
    }

    osg::ref_ptr< osg::Vec3Array > verts;
};

struct CollectTrianglesVisitor : public osg::NodeVisitor
{
    CollectTrianglesVisitor() :
        osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
    {
    }

    void apply(osg::Transform& transform)
    {
        osg::Matrix matrix;
        if (!_matrixStack.empty()) matrix = _matrixStack.back();

        transform.computeLocalToWorldMatrix(matrix, this);

        pushMatrix(matrix);

        traverse(transform);

        popMatrix();
    }

    void apply(osg::Geode& geode)
    {
        for (unsigned int i = 0; i<geode.getNumDrawables(); ++i)
        {
            osg::TriangleFunctor<CollectTriangles> triangleCollector;
            geode.getDrawable(i)->accept(triangleCollector);
            for (unsigned int j = 0; j < triangleCollector.verts->size(); j++)
            {
                osg::Matrix matrix;
                if (!_matrixStack.empty())
                {