How to generate a tessellation with bimodal grains?

[xiamucp]

I hope all is well. I wonder how can I generate a tessellation like this?

[rquey]

Provide a (weighted) sum of distributions in -morpho:

neper -T -n 100 -morpho "diameq:lognormal(0.1,0.01)+0.1*lognormal(0.2,0.02),1-sphericity:lognormal(0.15,0.03)" -dim 2 -morphooptiini "weight:radeq,coo:packing"

The -morphooptiini "weight:radeq,coo:packing" option speeds up the process using a better initial solution.