Real-Time Physics Simulation Forum

You can use visual shapes without collision shapes. For example, your URDF code can be: <?xml version="1.0"?> <robot name="cube"> <link name="base_link"> <collision> <geometry> <box size="0 0 0"/> </geometry> </collision> <inertial> <mass value="0"/>...

I am not exactly sure what you mean, but you can identify different visual shapes and collision shapes in your URDF file.

I am completely stumped here, I looked around HopperBulletEnv, and its dependencies, but couldn't find anywhere how in those environments constraints were defined to allow motion in 2D. import time import pybullet as p p.connect(p.GUI) SURFACE = p.loadURDF("surface.urdf", useFixedBase=True...

An automatic collision resolution takes place when we step the simulation and 2 or more objects are in collision. Can we confine this resolution to 2D? That is, if 2 objects are in collision, they should be moved out of each other by applying forces to 2 axes out of 3. Is there such a way to do this...

Thank you very much, this worked perfectly!

When you export using the sw2urdf tool, you can't just move or copy the URDF file alone without its folder. You should give the path of URDF in the folder exported by the tool. So, if you move the entire folder exported by the sw2urdf tool to your root directory, you should be able to use something ...

Hello, I'm trying to detect collision between shapes that can be placed within each other. I created a hollow shape and its filling in SolidWorks, then exported them to URDF format using the popular ROS addon for this job. The STL file used for the mesh is correct and representative of the hollownes...

Thank you very much! I'm trying to do just that but in Python, do you know if that is possible? Also, I'm trying to find the governing equations. When two objects are created in collision, and they push each other out, how is the resulting force calculated? Is it modeled as an (most probably) elasti...

Hello, Where can I find the physics equations implemented by the Bullet Physics Engine? Specifically, I am looking for the equations that govern the collisions in a pybullet simulation. If two objects are created in collision (sharing some or all the same mesh points), they push each other out. 1) W...