The Simple Simulator: Simulation Made Simple

Simple is a new (differentiable) physical engine based on recent progress on solving contact simulation and leveraging Pinocchio for fast dynamics computations and HPP-FCL for efficient collision detection. While first targetting robotics applications, Simple can be exploited in many other contexts: video games, system design, graphical animations, biomechanics, etc.

Simple is developed by the WILLOW team at Inria. The code associated with Simple will be released as open-source in the next few weeks. Stay tuned.

The core team

The following persons actively took part in the development of Simple:

• Justin Carpentier (Inria): core developer and project instigator
• Quentin Le Lidec (Inria): core developer
• Louis Montaut (Inria/CTU): core developer
• Joris Vaillant (Inria): core developer

External contributions are more than welcome. If you have contributed to the development of Simple, feel free to add your name.

Associated scientific and technical publications

Simple is built on active research around understanding and enhancing physical simulation. Interested readers can learn more about the algorithmic and computational foundations of Simple by reading these publications:

• Le Lidec, Q., Montaut, L. & Carpentier, J. (2024, July). From Compliant to Rigid Contact Simulation: a Unified and Efficient Approach. In RSS 2024-Robotics: Science and Systems.
• Montaut, L., Le Lidec, Q., Petrik, V., Sivic, J., & Carpentier, J. (2024). GJK++: Leveraging Acceleration Methods for Faster Collision Detection. IEEE Transactions on Robotics.
• Sathya, A., & Carpentier, J. (2024). Constrained Articulated Body Dynamics Algorithms. Under review.
• Montaut, L., Le Lidec, Q., Bambade, A., Petrik, V., Sivic, J., & Carpentier, J. (2023, May). Differentiable collision detection: a randomized smoothing approach. In 2023 IEEE International Conference on Robotics and Automation (ICRA).
• Le Lidec, Q., Jallet, W., Montaut, L., Laptev, I., Schmid, C., & Carpentier, J. (2023). Contact models in robotics: a comparative analysis. Under review.
• Montaut, L., Le Lidec, Q., Petrik, V., Sivic, J., & Carpentier, J. (2022, June). Collision Detection Accelerated: An Optimization Perspective. In Robotics: Science and Systems (RSS 2O22).
• Carpentier, J., Budhiraja, R., & Mansard, N. (2021, July). Proximal and sparse resolution of constrained dynamic equations. In Robotics: Science and Systems (RSS 2021).
• Carpentier, J., & Mansard, N. (2018, June). Analytical derivatives of rigid body dynamics algorithms. In Robotics: Science and systems (RSS 2018).