Also reduce slightly the resolution of the models to make comparing golden data more readable.
PiperOrigin-RevId: 582990641
Change-Id: I4f935a4ce316c70f4b1641e1c0f2fe49f801b32c
0. Keyframe was generated by simulating passively for 64 timesteps and then saving from `simulate`.
1. This makes forward.data much more informative. There are more contacts, velocities are not 0.
2. Added non-zero controls to forward.data.
3. 70 timesteps is a lot to integrate, things can change a lot. Since we now start at time = 0.128 = after 64 steps of passive simulation, we continue to integrate for only 6 timesteps.
PiperOrigin-RevId: 570966233
Change-Id: I9538aa44619393ff05ed8c3177e73993e222150a
- Introduced private function `mj_advance()` as single point of state & time advancement.
PiperOrigin-RevId: 456525969
Change-Id: Iae17217e305c7baf07cb5ecd1e1b84b936421097
Added analytic derivatives of smooth (unconstrained) dynamics forces, with respect to velocities:
- Centripetal and Coriolis forces computed by the Recursive Newton-Euler algorithm.
- Damping and fluid-drag passive forces.
- Actuation forces.
A new implicit-in-velocity integrator is implemented using the analytic derivatives. This integrator lies between the Euler and Runge Kutta integrators in terms of both stability and computational cost.
PiperOrigin-RevId: 450377010
Change-Id: Ie192b441876c22e732fb749333926f296e0a09cc
Yuval Tassa