Why can't the Lidar detect deformable body?

Omniverse Isaac Sim
1

I tried to detect deformed object using lidar in GUI, but Lidar didn’t react to deformable objects.

The image below shows Rigid Body with Collidars Preset, Collidars Preset, and Deformabl body in order from the left cube. As you can see, it responds to the cube given the collidar, but it cannot detect the deformable body.
We have confirmed that this deformable body has a contact judgment with a rigid body. Nevertheless, why can’t lidar detect deformable bodies?

lidar_test

Thanks in advance.

1 Like
2

Hi @Yuya_t - Are you using RTX lidar or physX lidar?

3

Thanks to reply @rthaker .

I use physX lidar in GUI.
I selected Crate >> Isaac >> Sensors >> Lidar >> Rotating.

4

Hi @Yuya_t - Unfortunately, physX lidar can’t detect at this moment but RTX lidar can detect the deformable body.

5

Hi all,
currently in the know issues page : Known Issues — Omniverse IsaacSim latest documentation it is stated to “Please disable GPU dynamics in the physics scene and set the broadphase type to MBP if you encounter this issue” related to crash using rtx lidar.
The deformable body simulation works only with GPU dynamics enables.
How is it possible to use both ?
Thanks

6

Use RTX lidar I had similar issues and @rthaker advised as above and its been perfect since