dirty_vertex_ranges()

std::vector< GraphicsOperator::DirtyVertexRange > MayaFlux::Nodes::Network::TopologyOperator::dirty_vertex_ranges ( ) const

overridevirtual

One DirtyVertexRange per topology whose TopologyGeneratorNode needs a GPU update, so add_topology() or a point edit on one graph re-uploads only that graph's expanded line vertices.

Ranges are in add_topology() order, matching get_vertex_data() and build_cluster_ids(); group_index is the topology index and feeds get_vertex_data_for_collection(). Empty when no topology changed. A point edit within one graph still re-uploads that whole graph's range, since its connectivity rebuild is global; isolation here is across graphs, not within one.

Reimplemented from MayaFlux::Nodes::Network::GraphicsOperator.

Definition at line 185 of file TopologyOperator.cpp.

{
    std::vector<DirtyVertexRange> ranges;
 
    uint32_t offset = 0;
    uint32_t index = 0;
    for (const auto& topology : m_topologies) {
        const auto count = static_cast<uint32_t>(topology->get_vertex_count());
        if (topology->needs_gpu_update()) {
            ranges.push_back(DirtyVertexRange {
                .group_index = index,
                .vertex_offset = offset,
                .vertex_count = count });
        }
        offset += count;
        ++index;
    }
 
    return ranges;
}

References count, MayaFlux::Nodes::Network::GraphicsOperator::DirtyVertexRange::group_index, index, m_topologies, and offset.