gistfile1.cpp

    auto it = std::find_if(progVertices.begin(), progVertices.end(),
    [&minCostVertex](const std::pair<unsigned int, Vertex *> &index) {
        // found smaller cost so swap vertex candidate
        if (index.second->collapseCost < minCostVertex->collapseCost) {
            minCostVertex = index.second;

            // early loop break if the collapse cost is zero or really close to zero
            if (minCostVertex->collapseCost > -glm::epsilon<float>() && minCostVertex->collapseCost < glm::epsilon<float>()) {
                return true;
            }
        }

        return false;
    });