bf74d01d93
Add collisions between flexes and SDF geoms.
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The flex-SDF algorithm uses the same logic as mesh-SDF. Previous to this change, the flex was instead colliding with the convex hull of the mesh generated automatically with marching cubes from the SDF.
PiperOrigin-RevId: 876420302
Change-Id: I3bf6552b6b8e108ba4c4209bbcf10fe5f2b2fd90
2026-02-27 14:35:27 -08:00
47a750d4a6
Restore mesh-SDF collisions.
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This CL rolls back the change from changelist 794576123 since the previous version was more robust and stable. Compared to the original algorithm, this changes handles degenerate and very large triangles as well.
BEGIN_PUBLIC
Restore mesh-SDF collisions.
END_PUBIC
PiperOrigin-RevId: 875716983
Change-Id: If0de41dc7bbd60460779821d2338cf2d661f40d5
2026-02-26 07:39:34 -08:00
a54c9f1d78
Specialized box and capsule collision primitives for stable 2D flex interactions.
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PiperOrigin-RevId: 864500749
Change-Id: I52aed6e29569477a8a0b6b5eb55ad483f1077c0e
2026-02-02 13:36:42 -08:00
7da271c687
Add vertex equality option.
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PiperOrigin-RevId: 860299454
Change-Id: I7befd8e5f4c8bac6d74684a96a9cc3cee9ae1e29
2026-01-23 16:30:05 -08:00
8734cab366
Add sleeping documentation
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https://youtu.be/vct493lGQ8Q
PiperOrigin-RevId: 829390353
Change-Id: I92f85a03be0bb585d2d8e29de1ed1a2e848f247f
2025-11-07 05:12:42 -08:00
3a7aa84e53
Add quadratic stiffness to flex.
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PiperOrigin-RevId: 827409919
Change-Id: I3dff8ea49fb1726fec4acf5b91138d6d52c4bfba
2025-11-03 03:01:38 -08:00
01d1ac34e0
Add quadratic interpolation to flex.
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PiperOrigin-RevId: 822055781
Change-Id: Ibc252ac560de666b0b28f868e46b88d3ed92f67d
2025-10-21 04:36:36 -07:00
8acd83f317
Add passive collision mode for flexes.
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PiperOrigin-RevId: 801754907
Change-Id: I4147af2ee2596519d42cb9a03cf8d5488f0bc3e8
2025-09-01 04:13:58 -07:00
c2ff60e630
Decrease time step in shell examples.
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Also add bending damping.
PiperOrigin-RevId: 796446515
Change-Id: I4744003caf6146e5e00614a6016d1a6dfc42cca7
2025-08-18 09:00:10 -07:00
b66175eba6
Bending stiffness for curved shells in flex.
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PiperOrigin-RevId: 796361841
Change-Id: I105ea235fe2a8e1bcbde67276d77fa92eed214a1
2025-08-18 04:13:18 -07:00
dcdf0a9c5c
Use mj_rayMesh for computing an inexact SDF for mesh-SDF collisions.
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PiperOrigin-RevId: 794576123
Change-Id: I3c688056a5ed617a0787ccf1f4aa683f9409040f
2025-08-13 07:50:06 -07:00
51babec9c5
Move tactile sensor to the engine.
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PiperOrigin-RevId: 788863133
Change-Id: I3172ebb7641fa8146469da25cba7db794760e7b1
2025-07-30 05:27:44 -07:00
5e666635f6
Remove mjtVisFlag.mjVIS_FLEXBVH and mjvOption.oct_depth
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PiperOrigin-RevId: 783355711
Change-Id: I1e11999d5c533925f1d07266aeca95598a5691ba
2025-07-15 09:08:22 -07:00
cef02fabea
Remove sdflib plugin and move interpolation to engine_collision_sdf.
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Before:
```
Simulation time : 1.71 s
Steps per second : 5854
Realtime factor : 11.71 x
Time per step : 170.8 µs
Newton iters / step : 2.19
Contacts / step : 3.45
Constraints / step : 13.79
Degrees of freedom : 12
Dynamic memory usage : 0.2% of 14M
```
After:
```
Simulation time : 1.41 s
Steps per second : 7093
Realtime factor : 14.19 x
Time per step : 141.0 µs
Newton iters / step : 2.19
Contacts / step : 3.45
Constraints / step : 13.79
Degrees of freedom : 12
Dynamic memory usage : 0.2% of 14M
```
PiperOrigin-RevId: 781087896
Change-Id: Iaf69dccc5e95af5bac862344683c74f962162186
2025-07-09 09:29:47 -07:00
b81f1db8af
Replace SdfLib with linear octree interpolation of TriangleMeshDistance.
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Temporary changes to the octree:
- Changed frame from mesh to geom
Before change (tolerance 1e-3):
```
Simulation time : 2.34 s
Steps per second : 4275
Realtime factor : 8.55 x
Time per step : 233.9 µs
Newton iters / step : 2.26
Contacts / step : 3.69
Constraints / step : 14.76
Degrees of freedom : 12
Dynamic memory usage : 0.7% of 14M
```
After change (6 octree levels):
```
Simulation time : 2.24 s
Steps per second : 4472
Realtime factor : 8.94 x
Time per step : 223.6 µs
Newton iters / step : 2.47
Contacts / step : 3.37
Constraints / step : 13.49
Degrees of freedom : 12
Dynamic memory usage : 0.2% of 14M
```
PiperOrigin-RevId: 781019754
Change-Id: Ib15581244dfe9e571e1c6c2cac4a101cf3d8ba3d
2025-07-09 06:21:41 -07:00
5c1f1f9dba
Add octree to meshes of SDF geoms.
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PiperOrigin-RevId: 777634862
Change-Id: I3210c2f8d73fd30ceecb0a11abd1d82e086b3d5d
2025-06-30 10:50:15 -07:00
047df4e871
Add texture to rotating cylinders in pulley example.
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PiperOrigin-RevId: 767260834
Change-Id: I3030be314b5b197163d75ef88a5fd99a940d9c67
2025-06-04 13:16:04 -07:00
7edbdd0ad6
Remove the Shell plugin and integrate it into the engine.
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PiperOrigin-RevId: 760688502
Change-Id: Ia70988d42b7edf571d7cb4a4f48f8fc50b51667d
2025-05-19 10:51:25 -07:00
71bdd915f7
Move bending stiffness from plugin to the compiler.
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PiperOrigin-RevId: 758677644
Change-Id: I7d5c5140ba6948002bfa4ae9d6b4bf0f6de0e39b
2025-05-14 07:39:24 -07:00
2386dfd7da
Add touch sensor for estimating the surface contact stresses from the SDF.
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PiperOrigin-RevId: 758556339
Change-Id: Ib56d76fab084b530fd68d61a29294cb6f1d05f3f
2025-05-14 00:45:58 -07:00
d77126dc58
Add vertcollide option for adding spheres at flex vertices.
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PiperOrigin-RevId: 757789990
Change-Id: I8ccba52b13e8c02a7be78f992297d6f414d98f8e
2025-05-12 09:13:48 -07:00
bae5175cf2
Accumulate rotation after updating pos and quat in replicate.
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Fixes #2501 .
PiperOrigin-RevId: 737929158
Change-Id: I0cad2de37190f1d30d427ae646acbde335b5be56
2025-03-18 02:51:05 -07:00
b9a23e8d0c
Merge pull request #2475 from lyd405121:main
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PiperOrigin-RevId: 735789711
Change-Id: Iad5a52a0ba29baad31ba60f0243e3b88553e6e96
2025-03-11 09:48:23 -07:00
56dda2b4de
[Add Model] Make a flex with textured bunny
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- Make a flex with textured bunny from disscution(https://github.com/google-deepmind/mujoco/discussions/2442 )
2025-03-03 16:45:43 +08:00
e16354a527
[New Model] Add a bunny with uv coordinate
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- Using [UVAtlas](https://github.com/Microsoft/UVAtlas ) to unwrap and generate from the [origin bunny](https://github.com/google-deepmind/mujoco/blob/main/model/flex/asset/bunny.obj )
2025-03-03 16:44:03 +08:00
c52d1b3941
Remove the particle composite (replaced by replicate).
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PiperOrigin-RevId: 730089997
Change-Id: If8d18fb56ae01241e76f84dbf7951e034026d829
2025-02-23 03:14:11 -08:00
0fcd20f0da
Remove grid from composite types.
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Replaced it with flexcomp in the models.
PiperOrigin-RevId: 730070619
Change-Id: Icbc69e4c6784c6252743f689a1eafb6482d0c393
2025-02-23 01:31:41 -08:00
7cdf180641
Introduce trilinear flex parametrization.
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These flexes use only 24 DOFs (3 per vertex of the bounding box), while colliding with the full high resolution mesh.
On an 8x8x8 cube, the performance using DOFs at all vertices is
```
Simulation time : 18.74 s
Steps per second : 533
Realtime factor : 0.53 x
Time per step : 1874.4 µs
Contacts per step : 114.88
Constraints per step : 3322.51
Degrees of freedom : 1536
```
With the new implementation, it is the following:
```
Simulation time : 1.82 s
Steps per second : 5507
Realtime factor : 5.51 x
Time per step : 181.6 µs
Contacts per step : 38.84
Constraints per step : 155.36
Degrees of freedom : 24
```
PiperOrigin-RevId: 721008829
Change-Id: I833df027527db578d86667cc4b24295bcf6f7d22
2025-01-29 09:38:22 -08:00
ee6f4837f3
Auto-generate 3D mesh from convex OBJ if dim=3 in flex.
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This requires the user to explicitly specify an origin.
PiperOrigin-RevId: 712483526
Change-Id: Ie316a5eccb676bb918d4bb746795019145c10f5b
2025-01-06 04:35:59 -08:00
300450f8b8
Add circle to flexcomp and remove rope and loop from composite.
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Add pulley example to show a circle use case.
Switch on flex edge rendering by default (no effect when flex skin is rendered).
PiperOrigin-RevId: 700738379
Change-Id: I8469bbf194de01c8dab66c9a51c49879013df141
2024-11-27 10:14:25 -08:00
831d9881d3
Remove box, cylinder and ellipsoid composite types.
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Also, fix a bug with Flex textures that was causing an incorrect allocation of the textures in mjModel. Fixes #2013 .
PiperOrigin-RevId: 692510858
Change-Id: If781716216974e085244da27bc3aa57d91c3458c
2024-11-02 11:14:13 -07:00
d646ba8de1
Update MuJoCo changelog with a video of the 100_humanoids model.
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Improve the model's rendering FPS by reducing the number of shadow-casting lights from 7 to 2.
https://youtu.be/e8lUuykQPGs
PiperOrigin-RevId: 686118052
Change-Id: If376564fdc23ad8d754dac1e5825079c0b806063
2024-10-15 08:40:06 -07:00
2dd518734f
Stop over-allocating memory in Newton solver.
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PiperOrigin-RevId: 684797464
Change-Id: I3389416cb69a8564b5119f6e3944b579893ea511
2024-10-11 05:09:33 -07:00
395129bbd3
Improvements to lighting and replication logic in humanoid.xml and 22_humanoids.xml.
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Minor fix to memory usage printing in simulate.
PiperOrigin-RevId: 683787943
Change-Id: I0a42dacc8af0e659c3817df57bceb76d9e4d5ae3
2024-10-08 15:36:22 -07:00
4998e7b392
Move flex damping to the engine and remove membrane and solid plugins.
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PiperOrigin-RevId: 676434954
Change-Id: I24e8dbaa90afcffd613a9cf106ef8b7262195328
2024-09-19 09:01:30 -07:00
b15de2c951
Add elasticity parameters to the schema.
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PiperOrigin-RevId: 675115200
Change-Id: Ic6608ce61cbb857dca71b3d9cbdac057e8f1ac7a
2024-09-16 05:56:36 -07:00
4e3dc14f8e
Remove model/humanoid100/humanoid100.xml (used <include>), replace with model/humanoid/humanoid100.xml (uses <attach>)
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PiperOrigin-RevId: 673123895
Change-Id: I0c3c6dac69d9fc12a6ea76d586c34503fc167bad
2024-09-10 15:14:04 -07:00
4862b9e765
Remove plugin support from Composite particles.
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This functionality is replaced by FlexComp.
PiperOrigin-RevId: 672503965
Change-Id: I58953267de285f82e416f9f60576a336b7d0da4c
2024-09-09 04:58:26 -07:00
70d70bc3b7
Fix typos in MuJoCo documentation.
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PiperOrigin-RevId: 656068822
Change-Id: I5ebbb3701148ea4d978a6a1ad3f762ffcc7e57cb
2024-07-25 13:31:13 -07:00
27b9ddda5b
Add attach tag to MJCF.
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PiperOrigin-RevId: 651117953
Change-Id: I57b0e53ed44607d479b3785d908e0837c0804cf3
2024-07-10 12:41:43 -07:00
393895bb29
Explicitly specify actdim on PID plugin actuators, to allow them to be used with keyframes.
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Support actdim attribute on plugin actuators.
Remove the actuator_actdim callback. This callback leads to crashes when loading keyframes for models that have a stateful plugin.
PiperOrigin-RevId: 650649505
Change-Id: I40d1994d02ae4e20ce631b2702a984766cf2628e
2024-07-09 09:08:48 -07:00
19d505d847
Remove unused texture attribute in some models.
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PiperOrigin-RevId: 648497401
Change-Id: I9f9a843abfb710afaf25798fa659efd92bcd7007
2024-07-01 15:05:02 -07:00
26f23066d1
Add replicate element to MJCF. Fixes #553
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PiperOrigin-RevId: 629393578
Change-Id: Ia1db1b9e47eba8868117b0f7b85edcd0cc1b6d79
2024-04-30 06:29:18 -07:00
8f1ea05bef
Add disc mesh generation to user_flexcomp.
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PiperOrigin-RevId: 611462985
Change-Id: I0fc195d8733172f5f4347b04b5de0edfdd12613d
2024-02-29 07:24:47 -08:00
7c534a066c
Sort humanoid actuators in the same order as the joints.
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PiperOrigin-RevId: 608558353
Change-Id: I84015a92c39c187f65d59623f2793c29bf24b8ef
2024-02-20 04:41:17 -08:00
8d1b05bbd2
Fix markdown hyperlink.
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PiperOrigin-RevId: 595383191
Change-Id: Ia11b962c68ed33cc0fd6c5279f571f4b21d81570
2024-01-03 06:19:32 -08:00
cd972bbeee
Document humanoid model changes in changelog section of its README + minor cosmetic improvements.
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PiperOrigin-RevId: 595367344
Change-Id: I17483de71c6cbcf6a66e2fad762cc32f8cbee8b5
2024-01-03 04:47:05 -08:00
e07ea625ac
Add keyframes to humanoid model.
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PiperOrigin-RevId: 595175659
Change-Id: I2aae405a5dfbd9b14253d6330cb12003bd4f6c08
2024-01-02 12:00:46 -08:00
7d8d4d398e
Make elasticity plugins compatible with flex pins. Fixes #1235 .
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Before change:
poncho 18.20s
poncho_flex 44.60s
floppy 4.70s
floppy_flex 6.43s
After change:
poncho 18.23s
poncho_flex 44.62s
floppy 4.67s
floppy_flex 6.57s
PiperOrigin-RevId: 585952587
Change-Id: I0e7c1513f64c7ab1e6ad71e2168b4467c042b46f
2023-11-28 06:13:43 -08:00
37bb03f435
Move humanoid geoms to group 1
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PiperOrigin-RevId: 585632746
Change-Id: I832804b9c0d090506c3b4ed5c0eeeb5e4cae412a
2023-11-27 06:23:54 -08:00
Alessio Quaglino