Method firstAtom

Lattice/tests/test.cpp:35–35

    static void setSize(OctreeNode& node, float value) { node.size = value; }

    static size_t firstAtom(const OctreeNode& node) { return node.firstAtom; }
    static void setFirstAtom(OctreeNode& node, size_t value) { node.firstAtom = value; }

    static const OctreeNode* child(const OctreeNode& node, int index) { return node.children[index].get(); }