Function getChildren

bt_editor/utils.cpp:38–84

}

std::vector<Node*> getChildren(const QtNodes::FlowScene &scene,
                               const Node& parent_node,
                               bool ordered)
{
    std::vector<Node*> children;

    if( parent_node.nodeDataModel()->nPorts(PortType::Out) == 0)
    {
        return children;
    }

    const auto& conn_out = parent_node.nodeState().connections(PortType::Out, 0);
    children.reserve( conn_out.size() );

    for( auto& it: conn_out)
    {
        auto child_node = it.second->getNode(PortType::In);
        if( child_node )
        {
            children.push_back( child_node );
        }
    }

    if( ordered && children.size() > 1)
    {
        if( scene.layout() == PortLayout::Vertical)
        {
            std::sort(children.begin(), children.end(),
                      [&](const Node* a, const Node* b)
            {
                double pos_a = scene.getNodePosition( *a ).x() + scene.getNodeSize( *a ).width()*0.5;
                double pos_b = scene.getNodePosition( *b ).x() + scene.getNodeSize( *b ).width()*0.5;
                return pos_a < pos_b;
            } );
        }
        else{
            std::sort(children.begin(), children.end(),
                      [&](const Node* a, const Node* b)
            {
                double pos_a = scene.getNodePosition( *a ).y() + scene.getNodeSize( *a ).height()*0.5;
                double pos_b = scene.getNodePosition( *b ).y() + scene.getNodeSize( *b ).height()*0.5;
                return pos_a < pos_b;
            } );
        }
    }
    return children;
}


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