Deformable material view can not get/update information in isaacsim2023.1

Omniverse Isaac Sim
1

Hi, I’m trying to make a deformable body with deformable material in Isaac sim 2023.1.0, but I have a problem with the deformable material view can not get/set material properties.

I tried to get the paramter from material:

youngs_modulis = self.deformableMaterials.get_youngs_moduli(indices=env_ids, clone=False)
# env_ids is a tensor like torch.tensor[0,1,2,3,4,5,6,7,8,9,10]
# self.deformableMaterials is DeformableMaterialView

But I got the problem from deformable_material_view.py

return current_values[indices]
IndexError: index 1 is out of bounds for dimension 0 with size 1

Then I check the deformable_material_view.py code, I found that it uses physics_sim_view to get values:

current_values = self._physics_view.get_youngs_modulus()

The values only 1 demonsion:

[INFO] current values: tensor([[50000000.]])

It seems the config problem, but I do not know how to set, anybody knows how to deal with it?
Many thanks!

4

Hi there, could you double check whether the deformableMaterials object contains the number of environments you are expecting? This can be checked with deformableMaterials.count. It seems like the view may only have one object in it.