Real-Time Physics Simulation Forum 2021-07-21T21:24:47+00:00 https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/9798 2021-07-21T21:24:47+00:00 2021-07-21T21:24:47+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=43512#p43512 <![CDATA[Re: Cannot go under a bridge-like mesh]]>
The mesh looks like this: Image

Code: 

<robot  name="PlayPenURDF">  <link    name="Body">    <inertial>      <origin        xyz="-5.55111512312578E-17 -0.00480014107726523 0"        rpy="0 0 0" />      <mass        value="13.9758586349204" />      <inertia        ixx="1.74953594219083"        ixy="-2.36355193514317E-17"        ixz="3.70074341541718E-16"        iyy="3.4790390640101"        iyz="-1.31174746495725E-18"        izz="1.74953594219083" />    </inertial>    <visual>      <origin        xyz="0 0 0"        rpy="0 0 0" />      <geometry>        <mesh          filename="package://PlayPenURDF/meshes/Body.STL" />      </geometry>      <material        name="">        <color          rgba="0.752941176470588 0.752941176470588 0.752941176470588 1" />      </material>    </visual>    <collision>      <origin        xyz="0 0 0"        rpy="0 0 0" />      <geometry>        <mesh          filename="package://PlayPenURDF/meshes/Body.STL" />      </geometry>    </collision>  </link></robot>
Any help is appreciated.

Statistics: Posted by Systemtechniker — Wed Jul 21, 2021 9:24 pm

]]> 2014-02-27T11:54:33+00:00 2014-02-27T11:54:33+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33043#p33043 <![CDATA[Re: Cannot go under a bridge-like mesh]]> Statistics: Posted by robee00 — Thu Feb 27, 2014 11:54 am

]]> 2014-02-27T00:17:17+00:00 2014-02-27T00:17:17+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33041#p33041 <![CDATA[Re: Cannot go under a bridge-like mesh]]> Yes, only the brown part is imported, and I think the coordinate system is okay, as my mesh looks normal.

Statistics: Posted by robee00 — Thu Feb 27, 2014 12:17 am

]]> 2014-02-26T19:06:02+00:00 2014-02-26T19:06:02+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33038#p33038 <![CDATA[Re: Cannot go under a bridge-like mesh]]> -Is the mesh you're importing only the brown arch part? Could the ground be getting added, too, which might be causing your collisions?
-Have you tried dropping the mesh into one of the Bullet Demos so you can visualize the collision geometry? I have to do this sometimes with the project I'm working on since Bullet objects are invisible in my display program. It might help you figure out what's going on.
-Check to see that Bullet's X, Y, and Z correspond to any other coordinate systems you're using. In my project, Bullet's Y axis is my display's Z axis, so I have to flip everything. Maybe your model is turned on its side?

Hope you get your issue solved!

Statistics: Posted by bwelch — Wed Feb 26, 2014 7:06 pm

]]> 2014-02-26T18:28:30+00:00 2014-02-26T18:28:30+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33037#p33037 <![CDATA[Cannot go under a bridge-like mesh]]>
I started using Bullet, and in my project, I load an obj file, which looks like a stone bridge. I create a TriangleMeshShape from it, it has a mass of 0, so it's static. When I want to go under it with a CapsuleShape, I can't. I looks like they are colliding, but they are not. I made sure that the capsule is small enough to go under the bridge, but I just cannot go. The mesh looks like this: http://i.imgur.com/Hmwfp.png

Thanks!

Statistics: Posted by robee00 — Wed Feb 26, 2014 6:28 pm

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