Problem with OGDF Cluster Algorithm : Fixed position

[David Jimenez]

Hi

 

I want to add a series of nodes to a cluster with a fixed position, and relate these nodes with others that are outside the cluster

 

I try to orthogonalize this graph, and I must modify the position of all the elements except the position of the elements that are inside the cluster, which must remain with their fixed position

 

in the following image, the nodes with fixed position would be those found in the blue rectangle

the problem is that when I execute the orthogonal algorithm in clusters in the graph, it also changes the position of the nodes that are inside the cluster

 

How could I make the position of the elements within the cluster remain fixed after executing the algorithm?

 

Thanks so much