I got it.
I can use a collection of curves as guides.
But , when i want to use only these guides, without the guides created via the generator, if i set the density of the generator to 0, all the clump disappear.
I need to have at least 1 generated curve…
Another try :
I create a grid
On this grid, i create medusa nodes, standard parameters, and a clump modifier
I click on the Plus button, next to the clump, and select “create guide curves”
In the outliner, i select the new guide curves, previously created.
I can add modifiers in the medusa notes hierarchy panel. Everything is ok so far
Then, i wanted to use custom guide curves.
I can’t do that by selecting the new curves in the hair medusa nodes geo nodes modifier. It don’t work
But i was able to do that by plugging by hand the right object info node in the guide geo node tree, and disabling the object info node
My question : is it possible to have a more… straightforward workflow, in an upcoming version ?
Via the UI