--- a/src/vertexmap.h Tue Jul 27 16:29:00 2021 +0300 +++ b/src/vertexmap.h Wed Jul 28 08:23:09 2021 +0300 @@ -19,7 +19,8 @@ Q_SIGNAL void verticesChanged(); private: const Model* const model; - std::map<unsigned int, glm::vec3> vertices; + QSet<unsigned int> vertexHashes; + std::vector<glm::vec3> vertices; std::map<unsigned int, std::set<ldraw::id_t>> map; };