- When `mjData.nefc` was 0 (solver not run at all), we were plotting the stale diagnostics from the last run; now fixed.
- In the case where islands were used, the semantic of the plotted diagnostic `sqrt_nnz` (square root of Hessian nonzeros) is changed. It used to be the sum of square roots of solver nonzeros per island, it is now the square root of the sum of all nonzeros in all islands. The semantic `sqrt(sum(nnz_i))` was found to be more consistent than `sum(sqrt(nnz_i))`, in the sense that switching islanding on/off leads to smaller changes and is more in line with the interpretation of islanding as [block-diagonalization](https://mujoco.readthedocs.io/en/3.3.7/computation/#constraint-islands).
PiperOrigin-RevId: 827624908
Change-Id: I5fc86364ead585a4752a6d44823fb75cf6c7c318
Since we don't do any on demand data loading for USD and always convert everything it should be safe to use the SdfLayer API instead of the SdfAbstractData API. This enables other codepaths such as the USD writer class to reuse the same logic to generate USD specification from an mjSpec.
PiperOrigin-RevId: 827431722
Change-Id: I60a581e0c9577164a4a66229ea9dcb8912afcf74
- plugin system similar to mjpResourceProvider, but instead of loading a resource it converts an existing mjResource into an mjSpec.
- The returned spec is then composed into the referencing spec.
- This enables different file types to generate arbitrary specs, and allows us to separate format parsing from compilation code.
Follow up CLs will move some of the logic in src/engine for PNG, USD, KTX, OBJ loading into decoders.
The mj_parse function MjSpec from a given file, it's a more generic version of mj_parseXML.
In it's implementation, mj_parse as opposed to mj_parseXML will look for any registered decoder and
not assume we are striclty dealing with MJCF.
PiperOrigin-RevId: 826149497
Change-Id: I0ece26904280cb94bd5ded6dd5a565c539d60254
This allows setting attributes with bind using a list of mjSpec objects as arguments.
PiperOrigin-RevId: 825456920
Change-Id: Ie6af956feab0a805175d7aaecf26e071401fbf05
The user can recover the old behavior by passing prefix="".
This enables to attach children with default and save a valid result to XML.
PiperOrigin-RevId: 825011185
Change-Id: Id20c2589da928bf92b77bdb01cfba73dfc1d2f52
`xfrc_applied` mostly contains user perturbations which are rare. It is very often identically zero and for large arrays `mju_isZeroByte` is significantly faster than `mju_isZero`.
PiperOrigin-RevId: 824975356
Change-Id: Iadb1d300d68cf12de00c14a0665bd89924a2d7e0
This includes the filament, toolbox, and studio projects.
Adds a MUJOCO_BUILD_STUDIO option to enable building of the `studio` app (disabled by default).
Adds a MUJOCO_USE_FILAMENT to allow the studio app to use the filament rendering backend. A separate MUJOCO_USE_FILAMENT_VULKAN flag can be used to enable vulkan rendering.
PiperOrigin-RevId: 824602367
Change-Id: I26d46c16211ae2118f96c163c4194fea5b5a15a9
Adds targets for dear_imgui, implot, filament, sdl2, and webp. These
targets are not currently used.
PiperOrigin-RevId: 824554405
Change-Id: Ibebdd50752d251852a945b6abc230e2c6e65fae9
This ensures that at e.g. the barycenter of the triangle each vertex has weight 1/3, as one would expect with barycentric coordinates, rather than 1/sqrt(3). This makes it consistent to the finite element interpolation used in the passive elastic forces.
PiperOrigin-RevId: 823458736
Change-Id: Ia5c02cba186a80612de38402f791695c33e991ab
The smaller size is a warning/error on some targets:
```
error: ‘ bytes’ directive output may be truncated writing 6 bytes into a region of size between 0 and 15
```
PiperOrigin-RevId: 823047552
Change-Id: Id66b5828cf84a512dffc452753f1881deb685584
FetchPackage calls FindOrFetch, but sets USE_SYSTEM_PACKAGE to OFF
(i.e. do not find, just fetch). It also sets EXCLUDE_FROM_ALL.
PiperOrigin-RevId: 822565180
Change-Id: I70476f57b8d3371cefd02e840add279423913f3f
This function allows the caller to extract a subset of components of a state previously obtained via `mj_getState` without having to first write it back into `mjData`.
PiperOrigin-RevId: 822165077
Change-Id: I6433261f4f5ec2e8d024bb7dee8f7dbf1e62666c
Yuval Tassa