The sensor engine now correctly retrieves body IDs for contacts involving Flex elements by using mj_flexBody when a geom ID is -1. This allows contact sensors to detect and report forces/torques on bodies involved in Flex contacts.
PiperOrigin-RevId: 928607416
Change-Id: Ia815e1b3345bcfb393c9c4a829dc98959f2da50c
The obj_decoder plugin is updated to parse line segments ('l') from OBJ files and represent them as degenerate triangles. The user_flexcomp compiler now supports flex dimensions of 1, using these parsed line segments to define the 1D flex elements. The compile sample's error reporting is also improved.
PiperOrigin-RevId: 928566870
Change-Id: I6920729d1b1d5aeb391401c3245ebb1d4784c190
The ValidateSwapChains function will correctly set up swap chains
before any render calls, negating the need to have something done
in the constructor.
PiperOrigin-RevId: 928529339
Change-Id: Ie584d57f649730adc092f8683f18697892a5a14f
- Default rendering but without textures.
- Island coloring based on sleep state.
- Selected object highlighting.
PiperOrigin-RevId: 928482603
Change-Id: I5eda1307bc6e71a4b0b2933b5b941e945cb9de75
memcpy is more appropriate here as the source and destination buffers have the same size, ensuring the entire buffer is copied.
PiperOrigin-RevId: 927395770
Change-Id: Idbe9dade3160f593060fae5783743b28c0452695
Renderables may be created/destroyed frequently causing issues with
the underlying RenderTargets used for reflections. Instead, use a
ReflectionManager (associated with a Scene) to manage the RenderTargets.
PiperOrigin-RevId: 926072766
Change-Id: I56c70000183417a92ab9297bc6fec5779f484cbd
Drag-and-drop uploads go through Module.loadFile and never reached the prefetcher. This is a guard for future provider schemes (e.g., vfs) that shouldn't be passed to fetch().
PiperOrigin-RevId: 926042158
Change-Id: I119d5b1a7512f8e84bb4c752414797593a1e98cd
Add function for getting the material. Remove unused/unneeded functions.
PiperOrigin-RevId: 925847769
Change-Id: Iefaf9112b7419830eb2dc4d1323e9c27725c4b16
The StepControl::Advance method now accepts an optional std::function to be used instead of mj_step. This allows for custom simulation logic to be executed within the stepping loop. The Python bindings for StepControl::advance have been updated to support passing a Python callable as the custom step function.
PiperOrigin-RevId: 925393132
Change-Id: Id2820c4b55cbdfee6b01adc2395e99a990d4e7a3
Previously shell mode required cellcount=1 along at least one axis. This CL
adds support for cellcount > 1 in all three axes by pinning interior grid nodes
to the parent body and reconstructing their positions from boundary nodes via
Transfinite Interpolation (TFI).
PiperOrigin-RevId: 924314800
Change-Id: I8c2438f4866dd4133feed65f535a1ab69f0c9188
The field now stores either an approximate or exact diagonal of the constraint matrix A, so the name is made more general.
PiperOrigin-RevId: 924244954
Change-Id: I62b2f76531fb88b7b3bf96e6769940197596702b
Fixes#2313
This CL combines two complementary improvements to the Conjugate Gradient (CG) solver, significantly improving numerical precision, stability, and efficiency, particularly in single precision (float32).
1. Line Search Cost Evaluation Refactor: Previously, solver improvement was calculated by subtracting absolute costs: cost(alpha) - cost(0). In highly converged states or single precision, this is susceptible to catastrophic cancellation. We refactor PrimalSearch to compute the cost delta directly, dramatically improving precision.
2. Improved Solver Termination Condition: Near the float32 precision limit, line search deltas can occasionally be slightly negative due to numerical noise. Previously, any value below m->opt.tolerance (including negative values) triggered termination, halting the solver and locking in destabilizing steps. We update the termination condition to require positive improvement (0 < improvement < m->opt.tolerance), allowing the solver to continue iterating and recover stability.
Together, these changes yield substantial improvements, see reduced tolerances herein.
PiperOrigin-RevId: 924229669
Change-Id: Ic0bbefaed090f3a8b1e79ab8d45422c3e86fb56c
Two performance optimizations for interpolated flex objects:
1. Hoist loop-invariant stride calculations in `mju_cellLookup` out of nested loops.
This reduces multiplications from 16 to 6 (linear) and 54 to 12 (quadratic)
per vertex.
2. Extract and consolidate optimized 3D interpolation logic into a new
reusable utility `mju_evalBasisArray` in `engine_util_misc.c`. This function
uses nested loops and precomputed 1D shape functions to avoid expensive
dynamic `phi` calls and branching, and leverages stack-buffered outputs to
eliminate compiler pointer-aliasing barriers. We propagate this optimization
to both kinematics (`mju_interpolate3D`) and constraint setup
(`engine_core_constraint.c`).
Together these changes yield a ~50% overall speedup in `mj_fwdKinematics` for interpolated flexes with ~10k vertices in the collision meshes and ~10 nodes in the deformation grid.
PiperOrigin-RevId: 922198093
Change-Id: I9c804e65cd532e2f9ac6e9a71d01c30cd64186fa
Update Renderable so that it can switch its own draw states (material
instance, shadow casting, reflection textures, etc.) per render request.
This allows us to use the same Renderable with different effects from
different views within the same frame.
PiperOrigin-RevId: 922102817
Change-Id: I1cf02fddb7a00345a741db1bee88e716517765f4
- C++ Platform UX: Added a "Copy Camera" button to copy XML camera definitions to clipboard.
- C++ Platform UX: Extracted `SetSpeedIndex` and `GetExpectedLabelWidth` into reusable platform helpers.
- C++ Platform UX: Fixed combo box widths and removed auto-hide tab bar flag from dockspace.
- C++ Studio App: Deduplicated label width and speed index logic by adopting platform helpers.
- C++ Studio App: Updated the toolbar layout to use a 2-column table.
- Python Bindings: Added pybind definitions for `set_camera_index`, `set_speed_index`, and `camera_to_string`.
- Python Studio App: Aligned toolbar UI with C++ using a 2-column table and fixed immediate theme switching.
- Python Studio App: Added a Help menu displaying the MuJoCo version and Stats toggle.
- Python Events: Added `-`/`=` shortcuts for simulation speed and `Esc`/`[`/`]` shortcuts for camera selection.
PiperOrigin-RevId: 922097319
Change-Id: Iec74afe37bf5c7a1ebf1cab4141e47fff5fe9274
Haroon Qureshi