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32 Commits

Author SHA1 Message Date
Yuval Tassa edbdb5195c Change MuJoCo engine source code function-spacing convention from 3 blank lines to 2 
PiperOrigin-RevId: 813754244
Change-Id: I6836e41c3b021cb727e922c25c60f629b9814c93
 2025-10-01 07:58:17 -07:00
Yuval Tassa b9900db00e Extract memory allocation functions and core utilities 
PiperOrigin-RevId: 801745499
Change-Id: Iaf05c3430769d3115743d8ab020d13148cb2eb59
 2025-09-01 03:38:25 -07:00
Yuval Tassa 755564a348 Remove unused code related to legacy island implementation. 
Also fix a docstring.

PiperOrigin-RevId: 757939564
Change-Id: I3a970fd38c63886d34cd23b1fb45617a9ce5c147
 2025-05-12 15:39:16 -07:00
Yuval Tassa 25126e88c7 Move mju_cholFactorCount to engine_util_solve. 
PiperOrigin-RevId: 746011856
Change-Id: If9812251420053644f4eca81adb5116d370ee524
 2025-04-10 06:56:31 -07:00
Yuval Tassa d86900aac1 Speed up mju_cholUpdateSparse by not checking for varying sparsity pattern where it is guaranteed to not vary. 
PiperOrigin-RevId: 720126576
Change-Id: I3a43bdd0259656fab462b1cd155cb422982e970d
 2025-01-27 05:07:28 -08:00
Yuval Tassa 2691887500 Add engine-internal convenience macro for allocating typed arrays, improve error message. 
PiperOrigin-RevId: 705126655
Change-Id: I2bd8fada6d33a919d2fb82297f93ac57958355a4
 2024-12-11 09:04:44 -08:00
Yuval Tassa 537fc2ff45 Use diagonal index to speed up mju_solveLUSparse. 
PiperOrigin-RevId: 704303282
Change-Id: I72c3fbcd31a5564fc792b73efe9d12a151b4d60f
 2024-12-09 08:53:25 -08:00
Kyle Bayes 18682aac6a Fix function definition formatting. 
PiperOrigin-RevId: 691782530
Change-Id: Ib1611285e77e274b17074d5f09ede00cdc0c6f0f
 2024-10-31 06:45:41 -07:00
Yuval Tassa 2dd518734f Stop over-allocating memory in Newton solver. 
PiperOrigin-RevId: 684797464
Change-Id: I3389416cb69a8564b5119f6e3944b579893ea511
 2024-10-11 05:09:33 -07:00
Yuval Tassa fd17b2144a Replace double- or single-precision-denominated function calls in the engine with the equivalent mjtNum-denominated calls. This avoids unnecessary casting or precision loss when MuJoCo is compiled for 32-bit float precision. Accordingly, remove #include <math.h> from all engine source files.
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Also, minor type-related fixes in `user_mesh.cc`.

PiperOrigin-RevId: 675082329
Change-Id: Icc5eb9f9eb4fbf09b08d7d4b9b2929f414e4a75c
 2024-09-16 03:40:17 -07:00
Yuval Tassa e4d4153352 Move sanitizer instrumentation to a separate header file. Fixes #2049. 
PiperOrigin-RevId: 672986547
Change-Id: I42522f4925237a73168e965364a2dd65c0f067cb
 2024-09-10 09:05:35 -07:00
Yuval Tassa 19388eee0c Fix type errors in engine and plugins. 
- Preparation for a float32 build of MuJoCo.
- Fix use of `float`-typed `fabs` in `mju_eig3`.

PiperOrigin-RevId: 643804942
Change-Id: I89f64e8fd39f4e70e78d7607816283e217912383
 2024-06-16 12:35:05 -07:00
Yuval Tassa dd2580e546 Add internal functions for 3x3 matmul. 
PiperOrigin-RevId: 616749614
Change-Id: I7f3ac2ffc826076b6c97424324f03ecd9ccd4655
 2024-03-18 01:44:10 -07:00
Alessio Quaglino f0608648cb Stricter swapping condition in mju_eig3. 
This solves the texture rendering issue with the Rubik's cube. The texture were specified with respect to the incorrect frame, so a default rotation of (0, 0, pi/2) is now applied to the model file.

PiperOrigin-RevId: 571715153
Change-Id: I3efae3b1fc8f64e6c9e4db90a7609506e3cbed86
 2023-10-08 04:04:34 -07:00
Yuval Tassa d61d0349b8 Fix mju_eig3 declarations. 
PiperOrigin-RevId: 571296456
Change-Id: Ic05f44c8c0883fe96e5671d71fe9b447c2e91162
 2023-10-06 04:10:44 -07:00
Saran Tunyasuvunakool 4929077211 Remove mjMARKSTACK and mjFREESTACK macros. 
PiperOrigin-RevId: 562844184
Change-Id: Id2f57f5d132c47094dad75c6dab7297d7aa73458
 2023-09-05 11:41:43 -07:00
Yuval Tassa d5292976de Add internal utility for zeroing int vectors. 
Remove unnecessary branches in related functions.

PiperOrigin-RevId: 562768873
Change-Id: I3964a7a953d95bcd4e29137a7b590be5ffa6e311
 2023-09-05 07:15:14 -07:00
Yuval Tassa 29aa5e4a41 Allow dot products with sparse vectors to specify that one vector uses uncompressed memory. 
PiperOrigin-RevId: 561951337
Change-Id: I1310d7c09d9a85ad9b43877155844a9d0ce6edab
 2023-09-01 07:40:16 -07:00
Saran Tunyasuvunakool b979a26b10 Rename mj_stackAlloc to mj_stackAllocNum. 
PiperOrigin-RevId: 561040193
Change-Id: I49ea21ffb5b596471d2aacefb1961c11c5c905d0
 2023-08-29 08:43:03 -07:00
Matthew Bennice 59138af10b Refactor stack allocations to have a clean byte allocation interface. 
PiperOrigin-RevId: 558881470
Change-Id: I08c45cb5fa25a1a9c39560e598e805cfa5141c3e
 2023-08-21 13:18:29 -07:00
Kyle Bayes ba12a1354b Optimize and refactor combineSparse and combineSparseCount. 
PiperOrigin-RevId: 558126391
Change-Id: Iead14c31136e789560f3c8124b84bd4e383158f4
 2023-08-18 06:14:09 -07:00
Kyle Bayes ac1f41160d Add engine internal error macro mjERROR to prepend calling function to error function. 
PiperOrigin-RevId: 541584847
Change-Id: I57447e64375413ee07aa96372a402e1ced59ff4a
 2023-06-19 03:29:31 -07:00
Yuval Tassa 455b1cd2e2 Add spaces around comparison operators in engine source files. 
PiperOrigin-RevId: 535989348
Change-Id: I883f7e82351299933c49b35a31842b5d8d6aea04
 2023-05-28 05:02:34 -07:00
Saran Tunyasuvunakool f887c1e928 Add ASAN and MSAN instrumentation for arena and mjData stack. 
PiperOrigin-RevId: 535635490
Change-Id: Ia1e58771bae25bf72c861f57452fb8faa2b918fb
 2023-05-26 09:17:26 -07:00
Yuval Tassa b0bc330b54 Add utility functions for banded-then-dense symmetric matrices. 
PiperOrigin-RevId: 528757637
Change-Id: I916d843140322c28e857100a6b305a041f704d53
 2023-05-02 05:58:08 -07:00
Nimrod Gileadi 8a8305d3ca Avoid unnecessary copies after of mju_mulQuat. 
Since fdbbc8bbe0, mju_mulQuat allows in-place computations.
There were a few places where the result was unnecessarily assigned to a temporary variable.

PiperOrigin-RevId: 477746005
Change-Id: I7351ef4796e7d70a4a54b930037bfaadee781f12
 2022-09-29 09:33:50 -07:00
Yuval Tassa a6b338db64 mju_boxQP only reads from the lower triangle of the input Hessian. 
- Before this change, an asymmetric Hessian would lead to solver failure. After this change the Hessian is symmetric by definition (upper triangle is ignored).
- API documentation was updated to reflect this contract.

PiperOrigin-RevId: 477135411
Change-Id: I60d011d36853afebac26c359771c217baf101360
 2022-09-27 04:32:40 -07:00
Yuval Tassa f4e7fa97af Add mju_mulVecMatVec, mutiplies a square matrix M by a vector x on both sides. Returns x^T * M * x. 
PiperOrigin-RevId: 474292806
Change-Id: I3432469dbe1f02ccf5a13241c7aa12d824cbe034
 2022-09-14 08:05:28 -07:00
Yuval Tassa 8957976674 Add mju_boxQP solving box-constrained quadratic programs. 
PiperOrigin-RevId: 474256629
Change-Id: I87d70fe6899608122fe0688b017420a3e81afae2
 2022-09-14 04:31:34 -07:00
Saran Tunyasuvunakool b849023069 Miscellaneous linting in src/engine. 
PiperOrigin-RevId: 462415459
Change-Id: I6c79c592613c6b0a665af06faf945586bb6ba32d
 2022-07-21 10:16:49 -07:00
DeepMind 64bc6d27b2 Add implicit integrator. 
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
 2022-05-23 01:22:15 -07:00
Saran Tunyasuvunakool 1913a02b40 Initial open sourcing of MuJoCo. 
PiperOrigin-RevId: 450374687
Change-Id: Ie3225a46ce095fc28ae8e63c326a640261f562bb
 2022-05-23 01:08:49 -07:00