Real-Time Physics Simulation Forum

Re: How to disable collisions?

2020-10-16T15:19:02+00:00

Hi Erwin,
If an object is fully masked (like you proposed), will it still have any affect on the physical simulation?
thanks

Statistics: Posted by abk — Fri Oct 16, 2020 3:19 pm

Re: How to disable collisions?

2018-09-26T12:16:48+00:00

Thank you so much guys I will try it out immediately.
I am so glad this was answered after all.

Statistics: Posted by Senpid Sinclair — Wed Sep 26, 2018 12:16 pm

Re: How to disable collisions?

2018-09-13T03:32:44+00:00

I just implemented a few ways to do it:

Disable collisions per object pair / link:

Code:

enableCollision= 0pybullet.setCollisionFilterPair(objectUniqueIdA, objectUniqueIdB, linkIndexA, linkIndexB, enableCollision)

or disable collisions per group of objects:

Code:

group = 0#other objects don't collide with memask=0 # don't collide with any other objectpybullet. setCollisionFilterGroupMask(objectUniqueId, linkIndex, group, mask)

Statistics: Posted by Erwin Coumans — Thu Sep 13, 2018 3:32 am

Re: How to disable collisions?

2018-09-03T11:35:28+00:00

You can use visual shapes without collision shapes. For example, your URDF code can be:

Code:

Statistics: Posted by ardabbour — Mon Sep 03, 2018 11:35 am

How to disable collisions?

2018-07-20T11:04:18+00:00

I know that collision detection/avoidance is what bullet is all about but I really just want to use it as a visualizer for robot stuff (like rviz but without ros) because it is very easy to setup.

So far for testing I am just loading robots via the URDF loader and they are going crazy when spawned into each other.

Now my question is: How can I either:
a) globally disable collisions or
b) disable collisions per object?

In another thread I found someone recommending setting a flag `CF_NO_CONTACT_RESPONSE` in the C++ code, but I haven't found that one in the pybullet lib and wouldn't know how to apply this. I was hoping that the URDF loader has this somehow as an optional flag, but not from what I saw.

Thanks so much in advance.

Statistics: Posted by Senpid Sinclair — Fri Jul 20, 2018 11:04 am