Working on it.
In the mean time you could check out the 55 line Topology Optimizaiton code that I made during my PhD and that has been the foundation of all of my work in topology optimization.
Theory and FEniCS code for large scale topology optimization.
In the mean time you could check out the 55 line Topology Optimizaiton code that I made during my PhD and that has been the foundation of all of my work in topology optimization.