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Override only MassAPI attributes that have been authored#1688

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camevor merged 5 commits into
newton-physics:mainfrom
camevor:usd-importer-mass-properties
Feb 24, 2026
Merged

Override only MassAPI attributes that have been authored#1688
camevor merged 5 commits into
newton-physics:mainfrom
camevor:usd-importer-mass-properties

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@camevor

@camevor camevor commented Feb 18, 2026

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Description

Modifies the MassAPI override logic in the USD importer to treat each authored attribute (mass, diagonalInertia, centerOfMass) independently. Previously, these were coupled in a two-branch structure that could discard individually authored values. This fixes:

  • Accumulated center of mass reset to (0, 0, 0) when mass and inertia were authored but center of mass was not.
  • Inertia replaced by the mass computer without regard for authored mass, instead of being scaled to match it.
  • Authored inertia discarded when mass was not authored.
  • Authored center of mass ignored when routed through the mass computer.

Newton Migration Guide

Please ensure the migration guide for warp.sim users is up-to-date with the changes made in this PR.

  • The migration guide in docs/migration.rst is up-to date

Before your PR is "Ready for review"

  • Necessary tests have been added and new examples are tested (see newton/tests/test_examples.py)
  • Documentation is up-to-date
  • Code passes formatting and linting checks with pre-commit run -a

Summary by CodeRabbit

  • Improvements

    • More accurate import of mass, inertia and center-of-mass with authored values taking precedence and better fallback to computed properties.
    • If mass is authored but inertia is missing, inertia is scaled to match authored mass for consistent results.
    • Improved inertia fallback and COM handling (including correct parallel-axis correction) and clearer validation/warnings for invalid or missing physics data.
  • Tests

    • Added a unit test verifying authored mass without authored inertia scales inertia using collider-provided density.

@camevor camevor requested a review from eric-heiden February 18, 2026 17:59
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📝 Walkthrough

Walkthrough

Adjusts USD import mass-property resolution to treat authored mass, inertia, and center-of-mass independently. Authored values take precedence; missing properties fall back to ComputeMassProperties. Adds inertia-scaling paths, COM precedence rules, validation warnings, and a new unit test for authored mass without authored inertia.

Changes

Cohort / File(s) Summary
Mass property logic
newton/_src/utils/import_usd.py
Reworks mass/inertia/CoM precedence: handles authored mass, diagonal inertia, principal axes, and center-of-mass independently; uses ComputeMassProperties(...) as baseline when any required MassAPI field is missing; adds inertia-scaling rules, sphere fallback with parallel-axis correction, validation checks and warnings for invalid authored values.
Documentation
docs/concepts/usd_parsing.rst
Updates docs to describe new multi-step precedence: authored-path, ComputeMassProperties fallback, collider mass info resolution, and guidance on fully authoring mass/inertia/CoM for predictable imports.
Tests
newton/tests/test_import_usd.py
Adds test_massapi_authored_mass_without_inertia_scales_to_uniform_density to verify authored mass with missing body inertia scales accumulated collider inertia using authored mass (guarded by USD availability).

Sequence Diagram(s)

sequenceDiagram
    participant Importer
    participant MassAPI as MassAPI (USD)
    participant MassComputer as ComputeMassProperties
    participant Colliders

    Importer->>MassAPI: Query authored mass, diagonalInertia, principalAxes, centerOfMass
    alt All authored (mass + inertia + CoM)
        Importer->>Importer: Apply authored mass, inertia, COM (use principalAxes or identity)
    else Missing any authored property
        Importer->>Colliders: Gather collider unit-density mass/inertia info (authored density or geometry)
        Colliders-->>Importer: aggregated collider mass/inertia, principal axes
        Importer->>MassComputer: ComputeMassProperties(using collider info)
        MassComputer-->>Importer: computed mass, inertia, COM, principal axes
        alt authored mass present && inertia missing
            Importer->>Importer: scale computed inertia by authored_mass / computed_mass
        else authored inertia present && mass present && no CoM
            Importer->>Importer: scale accumulated shape inertia to match authored mass
        end
        Importer->>Importer: choose COM (authored if present else computed) and set mass/inertia
    end
    Importer->>Importer: Validate (mass>0, inertia>0, density>0) and emit warnings if invalid
Loading

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

Suggested reviewers

  • eric-heiden
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Title check ✅ Passed The title 'Override only MassAPI attributes that have been authored' accurately and concisely summarizes the main change: treating each authored MassAPI attribute independently rather than using coupled logic.
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Actionable comments posted: 1

🧹 Nitpick comments (1)
newton/_src/utils/import_usd.py (1)

2146-2148: Inconsistent wp.mat33 construction: wp.mat33(inertia) vs wp.mat33(*inertia).

Line 2146 passes the numpy array directly (wp.mat33(inertia)), while line 2148 unpacks it (wp.mat33(*inertia)). The same pattern recurs at lines 2162/2164. Both produce the same result, but the inconsistency could confuse future readers.

Use consistent construction
                     inertia = rot @ np.diag(i_diag_np) @ rot.T
                     builder.body_inertia[body_id] = wp.mat33(inertia)
                     if inertia.any():
-                        builder.body_inv_inertia[body_id] = wp.inverse(wp.mat33(*inertia))
+                        builder.body_inv_inertia[body_id] = wp.inverse(wp.mat33(inertia))
                     else:
                         builder.body_inv_inertia[body_id] = wp.mat33(0.0)

Apply the same fix at lines 2162-2164.

🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@newton/_src/utils/import_usd.py` around lines 2146 - 2148, The two usages of
wp.mat33 are inconsistent: builder.body_inertia[body_id] = wp.mat33(inertia) vs
builder.body_inv_inertia[body_id] = wp.inverse(wp.mat33(*inertia)); change them
to a consistent form (pick one style and use it for both) — e.g., use
wp.mat33(*inertia) for constructing the matrix in both builder.body_inertia and
builder.body_inv_inertia — and make the same consistent replacement for the
other occurrences that follow the same pattern (the later block that constructs
body inertia/inverse inertia).
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@newton/_src/utils/import_usd.py`:
- Around line 2118-2129: When has_authored_mass is true the authored mass from
mass_api.GetMassAttr() is assigned to builder.body_mass[body_id] without
validating that it is positive; add a check after reading the authored mass to
detect non-positive values and log a warning (similar to the check in
_build_mass_info_from_authored_properties), avoid silently leaving
builder.body_inv_mass as 0.0 for an invalid mass, and ensure inertia scaling is
skipped or handled consistently when mass <= 0.0; update the logic around
has_authored_mass, builder.body_mass[body_id], builder.body_inv_mass[body_id],
and the inertia-scaling block so invalid authored masses produce a clear warning
and predictable state rather than a misleading downstream message.

---

Nitpick comments:
In `@newton/_src/utils/import_usd.py`:
- Around line 2146-2148: The two usages of wp.mat33 are inconsistent:
builder.body_inertia[body_id] = wp.mat33(inertia) vs
builder.body_inv_inertia[body_id] = wp.inverse(wp.mat33(*inertia)); change them
to a consistent form (pick one style and use it for both) — e.g., use
wp.mat33(*inertia) for constructing the matrix in both builder.body_inertia and
builder.body_inv_inertia — and make the same consistent replacement for the
other occurrences that follow the same pattern (the later block that constructs
body inertia/inverse inertia).

Comment thread newton/_src/utils/import_usd.py Outdated
Comment thread newton/_src/utils/import_usd.py Outdated
Comment thread newton/_src/utils/import_usd.py
@camevor camevor force-pushed the usd-importer-mass-properties branch from bebe161 to a2c19c9 Compare February 23, 2026 14:33
@camevor camevor marked this pull request as ready for review February 23, 2026 14:38
@camevor camevor enabled auto-merge February 23, 2026 14:42
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Codecov Report

❌ Patch coverage is 88.88889% with 4 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines Patch % Lines
newton/_src/utils/import_usd.py 88.88% 4 Missing ⚠️

📢 Thoughts on this report? Let us know!

@camevor camevor force-pushed the usd-importer-mass-properties branch from 72afb1f to e44df1a Compare February 23, 2026 14:55

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Actionable comments posted: 2

♻️ Duplicate comments (1)
newton/_src/utils/import_usd.py (1)

2177-2194: ⚠️ Potential issue | 🟡 Minor

Non-positive authored mass sets builder.body_mass to a negative value without a warning.

builder.body_inv_mass is correctly guarded (1.0 / mass if mass > 0.0 else 0.0), but builder.body_mass[body_id] = mass (line 2194) can write a non-positive value directly. Downstream code that reads body_mass directly (e.g., joint constraint solvers) may produce physically incorrect results without any diagnostics.

🛡️ Proposed guard
         if has_authored_mass:
             mass = float(mass_api.GetMassAttr().Get())
+            if mass <= 0.0:
+                warnings.warn(
+                    f"Body {body_path}: authored MassAPI mass is non-positive ({mass}). "
+                    "Treating body as static (inv_mass = 0).",
+                    stacklevel=2,
+                )
             shape_accumulated_mass = builder.body_mass[body_id]
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@newton/_src/utils/import_usd.py` around lines 2177 - 2194, The code writes a
possibly non-positive mass into builder.body_mass[body_id] (via the local
variable mass set from mass_api/GetMassAttr or cmp_mass) without any guard or
warning; update the assignment in import_usd.py so that before setting
builder.body_mass[body_id] you check mass > 0.0 and only assign the positive
value, otherwise set builder.body_mass[body_id] to 0.0 (or a minimal positive
fallback your system expects) and emit a warning mentioning the body_path and
that a non-positive authored mass was clamped/zeroed; keep the existing guarded
pattern used for builder.body_inv_mass (1.0 / mass if mass > 0.0 else 0.0) as
the reference and apply the same defensive behavior for builder.body_mass.
🧹 Nitpick comments (3)
newton/_src/utils/import_usd.py (3)

2188-2191: scale shadows the outer scale (wp.vec3) from the shape-parsing loop.

Renaming to inertia_scale avoids confusion for future readers comparing the shape-processing loop (where scale is a wp.vec3) with this block.

♻️ Proposed rename
-                    scale = mass / shape_accumulated_mass
-                    builder.body_inertia[body_id] = wp.mat33(np.array(builder.body_inertia[body_id]) * scale)
+                    inertia_scale = mass / shape_accumulated_mass
+                    builder.body_inertia[body_id] = wp.mat33(np.array(builder.body_inertia[body_id]) * inertia_scale)
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@newton/_src/utils/import_usd.py` around lines 2188 - 2191, The local variable
name scale in the inertia-adjustment block shadows the outer scale (a wp.vec3
used during shape parsing); rename the local variable to inertia_scale and use
that name when computing the scaled inertia and inverse inertia (update
occurrences around builder.body_inertia[body_id] and
builder.body_inv_inertia[body_id]) so the block reads e.g. inertia_scale = mass
/ shape_accumulated_mass and then applies inertia_scale to the mat33
multiplication and inverse call.

1222-1242: Optional: merge this loop into the body_specs loop above to avoid a second full scan of rigid bodies.

The loop at lines 1222–1242 iterates over the same prim_paths/rigid_body_descs as the loop at lines 1210–1219, calling stage.GetPrimAtPath and UsdPhysics.MassAPI a second time for each body prim. Both loops share the same guard conditions (warn_invalid_desc, ignored_body_paths).

♻️ Proposed merge
-    if UsdPhysics.ObjectType.RigidBody in ret_dict:
-        prim_paths, rigid_body_descs = ret_dict[UsdPhysics.ObjectType.RigidBody]
-        for prim_path, rigid_body_desc in zip(prim_paths, rigid_body_descs, strict=False):
-            if warn_invalid_desc(prim_path, rigid_body_desc):
-                continue
-            body_path = str(prim_path)
-            if body_path in ignored_body_paths:
-                continue
-            prim = stage.GetPrimAtPath(prim_path)
-            if not prim.HasAPI(UsdPhysics.MassAPI):
-                continue
-            mass_api = UsdPhysics.MassAPI(prim)
-            has_authored_mass = mass_api.GetMassAttr().HasAuthoredValue()
-            has_authored_inertia = mass_api.GetDiagonalInertiaAttr().HasAuthoredValue()
-            has_authored_com = mass_api.GetCenterOfMassAttr().HasAuthoredValue()
-            if not (has_authored_mass and has_authored_inertia and has_authored_com):
-                bodies_requiring_mass_properties_fallback.add(body_path)

Instead, inside the existing body_specs loop (lines 1210–1219), after body_specs[body_path] = rigid_body_desc:

+        if prim.HasAPI(UsdPhysics.MassAPI):
+            mass_api = UsdPhysics.MassAPI(prim)
+            if not (
+                mass_api.GetMassAttr().HasAuthoredValue()
+                and mass_api.GetDiagonalInertiaAttr().HasAuthoredValue()
+                and mass_api.GetCenterOfMassAttr().HasAuthoredValue()
+            ):
+                bodies_requiring_mass_properties_fallback.add(body_path)
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@newton/_src/utils/import_usd.py` around lines 1222 - 1242, The second loop
that populates bodies_requiring_mass_properties_fallback repeats the same prim
iteration and guards as the earlier body_specs population; merge the mass‑API
checks into the existing body_specs loop (the loop that assigns
body_specs[body_path] = rigid_body_desc) so you only call stage.GetPrimAtPath
and UsdPhysics.MassAPI once per prim: after the existing warn_invalid_desc and
ignored_body_paths checks and after setting body_specs[body_path], query
prim.HasAPI(UsdPhysics.MassAPI) and then check
mass_api.GetMassAttr().HasAuthoredValue(),
mass_api.GetDiagonalInertiaAttr().HasAuthoredValue(), and
mass_api.GetCenterOfMassAttr().HasAuthoredValue(), adding body_path to
bodies_requiring_mass_properties_fallback when any are missing; remove the
separate loop entirely.

2143-2201: cmp_* variables will appear "possibly unbound" to static analysis — consider initializing defensively.

cmp_mass, cmp_i_diag, cmp_com, and cmp_principal_axes are assigned only inside the if not (has_authored_mass and has_authored_inertia and has_authored_com): branch, yet they are referenced later in branches that are logically mutually exclusive with the all-authored case. The invariant is correct today, but a pyright strict pass or future refactor could break it silently with an UnboundLocalError.

♻️ Defensive initialization
+        cmp_mass, cmp_i_diag, cmp_com, cmp_principal_axes = 0.0, None, None, None
         if not (has_authored_mass and has_authored_inertia and has_authored_com):
             rigid_body_api = UsdPhysics.RigidBodyAPI(prim)
             cmp_mass, cmp_i_diag, cmp_com, cmp_principal_axes = rigid_body_api.ComputeMassProperties(
                 _get_collision_mass_information
             )
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@newton/_src/utils/import_usd.py` around lines 2143 - 2201, The cmp_*
variables (cmp_mass, cmp_i_diag, cmp_com, cmp_principal_axes) may be flagged as
possibly unbound by static analyzers; initialize them defensively before the
conditional that calls UsdPhysics.RigidBodyAPI.ComputeMassProperties (e.g., set
cmp_mass=0.0, cmp_i_diag=np.zeros(3,dtype=float), cmp_com=(0.0,0.0,0.0),
cmp_principal_axes=Gf.Quatf(1.0,0.0,0.0,0.0)) so later references in the
mass/inertia/COM logic are always defined while preserving existing semantics in
ComputeMassProperties and the has_authored_* branches.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@newton/_src/utils/import_usd.py`:
- Around line 2153-2158: The block handling body-level authored diagonal inertia
(inside has_authored_inertia) does not validate that diagonal components are
non-negative, so a negative component can produce a non-positive-definite
inertia stored in builder.body_inertia[body_id]; add the same validation used in
_build_mass_info_from_authored_properties: after reading i_diag_np from
mass_api.GetDiagonalInertiaAttr().Get(), check each component >= 0 (or > 0 as
appropriate), log or raise an error if any component is negative, and skip or
clamp the authored value so builder.body_inertia[body_id] is never set from an
invalid i_diag_np; ensure this check also runs before using principal_axes and
before writing to builder.body_inertia[body_id].

In `@newton/tests/test_import_usd.py`:
- Around line 4359-4365: Replace the current free-form test docstring with a
Google-style docstring that has a one-line summary, a short description, and an
"Expected" or "Notes" section; explicitly convert and annotate all physical
quantities to SI with inline unit tags (e.g., density 8000 [kg/m^3], cube side
0.10 [m] (was 10 cm), mass 8 [kg]) and show the inertia formula with units
(I_diag = (1/6) * m * s^2 [kg·m^2]) so the test's intent is clear; update the
docstring that appears above the test in newton/tests/test_import_usd.py (the
block starting with "Authored mass without inertia...") to follow Google style
and include these unit annotations.

---

Duplicate comments:
In `@newton/_src/utils/import_usd.py`:
- Around line 2177-2194: The code writes a possibly non-positive mass into
builder.body_mass[body_id] (via the local variable mass set from
mass_api/GetMassAttr or cmp_mass) without any guard or warning; update the
assignment in import_usd.py so that before setting builder.body_mass[body_id]
you check mass > 0.0 and only assign the positive value, otherwise set
builder.body_mass[body_id] to 0.0 (or a minimal positive fallback your system
expects) and emit a warning mentioning the body_path and that a non-positive
authored mass was clamped/zeroed; keep the existing guarded pattern used for
builder.body_inv_mass (1.0 / mass if mass > 0.0 else 0.0) as the reference and
apply the same defensive behavior for builder.body_mass.

---

Nitpick comments:
In `@newton/_src/utils/import_usd.py`:
- Around line 2188-2191: The local variable name scale in the inertia-adjustment
block shadows the outer scale (a wp.vec3 used during shape parsing); rename the
local variable to inertia_scale and use that name when computing the scaled
inertia and inverse inertia (update occurrences around
builder.body_inertia[body_id] and builder.body_inv_inertia[body_id]) so the
block reads e.g. inertia_scale = mass / shape_accumulated_mass and then applies
inertia_scale to the mat33 multiplication and inverse call.
- Around line 1222-1242: The second loop that populates
bodies_requiring_mass_properties_fallback repeats the same prim iteration and
guards as the earlier body_specs population; merge the mass‑API checks into the
existing body_specs loop (the loop that assigns body_specs[body_path] =
rigid_body_desc) so you only call stage.GetPrimAtPath and UsdPhysics.MassAPI
once per prim: after the existing warn_invalid_desc and ignored_body_paths
checks and after setting body_specs[body_path], query
prim.HasAPI(UsdPhysics.MassAPI) and then check
mass_api.GetMassAttr().HasAuthoredValue(),
mass_api.GetDiagonalInertiaAttr().HasAuthoredValue(), and
mass_api.GetCenterOfMassAttr().HasAuthoredValue(), adding body_path to
bodies_requiring_mass_properties_fallback when any are missing; remove the
separate loop entirely.
- Around line 2143-2201: The cmp_* variables (cmp_mass, cmp_i_diag, cmp_com,
cmp_principal_axes) may be flagged as possibly unbound by static analyzers;
initialize them defensively before the conditional that calls
UsdPhysics.RigidBodyAPI.ComputeMassProperties (e.g., set cmp_mass=0.0,
cmp_i_diag=np.zeros(3,dtype=float), cmp_com=(0.0,0.0,0.0),
cmp_principal_axes=Gf.Quatf(1.0,0.0,0.0,0.0)) so later references in the
mass/inertia/COM logic are always defined while preserving existing semantics in
ComputeMassProperties and the has_authored_* branches.

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📥 Commits

Reviewing files that changed from the base of the PR and between bebe161e44e0f5e14f441d1eb0a05fd2e85d1eb6 and e44df1a.

📒 Files selected for processing (3)
  • docs/concepts/usd_parsing.rst
  • newton/_src/utils/import_usd.py
  • newton/tests/test_import_usd.py

Comment thread newton/_src/utils/import_usd.py
Comment thread newton/tests/test_import_usd.py

@eric-heiden eric-heiden left a comment

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Thanks!

@camevor camevor added this pull request to the merge queue Feb 24, 2026
Merged via the queue into newton-physics:main with commit 0fa91f8 Feb 24, 2026
21 checks passed
vastsoun added a commit to vastsoun/newton that referenced this pull request Mar 3, 2026
* [Warp Raytrace] Added device parameter (newton-physics#1544)

* [Warp Raytrace] Added device parameter to previously overlooked call (newton-physics#1545)

* SolverMuJoCo: Fix tolerance clamping in update_solver_options_kernel (newton-physics#1546)

* Change default shape_ke to align with MuJoCo, parse geom solref from MJCF for contact stiffness/damping (newton-physics#1491)

Signed-off-by: Alain Denzler <adenzler@nvidia.com>

* Fix log_shapes broadcasting for length-1 warp arrays (newton-physics#1550)

* Fix XPBD restitution particle index (newton-physics#1557)

* Out-of-Bound memory read in example_diffsim_bear newton-physics#1386 (newton-physics#1533)

Signed-off-by: Viktor Reutskyy <vreutskyy@nvidia.com>

* Add versioned documentation deployment to GitHub Pages (newton-physics#1560)

* Fix broken documentation links after versioned docs deployment (newton-physics#1566)

* VBD New Features (newton-physics#1479)

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

* Add banners to membership verification workflow steps (newton-physics#1569)

* Support cable junctions (newton-physics#1519)

Signed-off-by: JC <jumyungc@nvidia.com>

* Rename parameter I to inertia newton-physics#1543 (newton-physics#1551)

Signed-off-by: Viktor Reutskyy <vreutskyy@nvidia.com>

* Fix example_robot_anymal_c_walk.py (newton-physics#1574)

* Change everywhere linesearch to iterative (newton-physics#1573)

* Remove standard collision pipeline (newton-physics#1538)

* USD Plumbing MJC solver attributes through resolver and custom attribute framework (newton-physics#1463)

Signed-off-by: Milad Rakhsha <mrakhsha@nvidia.com>
Signed-off-by: Milad-Rakhsha-NV <167464435+Milad-Rakhsha-NV@users.noreply.github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: adenzler-nvidia <adenzler@nvidia.com>

* Fix child shape filtering (newton-physics#1559)

* Fix ViewerRerun ignoring hidden parameter in log_mesh and log_instances (newton-physics#1555)

* Make NxN and SAP broad phase respect filtered pairs (newton-physics#1554)

* Add --quiet flag to examples to suppress Warp messages (newton-physics#1585)

* Defer resolution of MESH_MAXHULLVERT default in importers (newton-physics#1587)

* Fix TypeError when finalizing SDF geometry with device kwarg (newton-physics#1586)

* Make MESH_MAXHULLVERT a static class attribute Mesh.MAX_HULL_VERTICES. (newton-physics#1598)

* Significant non-determinism in unified collision pipeline for anymal_c_walking example newton-physics#1505 (newton-physics#1588)

Signed-off-by: Viktor Reutskyy <vreutskyy@nvidia.com>

* Add test for non-contiguous case (newton-physics#1549)

* Fix nightly Warp CI to resolve pre-release builds (newton-physics#1606)

* Verify default class and value handling (newton-physics#1556)

* SolverMuJoCo: Expand geom_margin to avoid OOB read with heterogeneous worlds (newton-physics#1607)

* Fix bug in control clear method (newton-physics#1602)

* Enable Use of Newton IK in Lab newton-physics#662 (newton-physics#1539)

Signed-off-by: Viktor Reutskyy <vreutskyy@nvidia.com>

* Fix import  of non-articulated joints (newton-physics#1535)

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* Bump version to 0.2.3

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* Fix some broken unit tests and WIP to fix fourbar contact conversions and rendering

* Make some conversions @staticmethods instead, because they dont need common class attributes

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* Add some cleanup to DR Legs, ANYmal D and basic four-bar examples

* Fix module-level imports of additional kamino-specific development dependencies

* Fix module-level imports of additional kamino-specific development dependencies

* Fix erroneous merge conflict.

---------

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vastsoun added a commit to vastsoun/newton that referenced this pull request Mar 4, 2026
* [Warp Raytrace] Added device parameter (newton-physics#1544)

* [Warp Raytrace] Added device parameter to previously overlooked call (newton-physics#1545)

* SolverMuJoCo: Fix tolerance clamping in update_solver_options_kernel (newton-physics#1546)

* Change default shape_ke to align with MuJoCo, parse geom solref from MJCF for contact stiffness/damping (newton-physics#1491)

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* Fix log_shapes broadcasting for length-1 warp arrays (newton-physics#1550)

* Fix XPBD restitution particle index (newton-physics#1557)

* Out-of-Bound memory read in example_diffsim_bear newton-physics#1386 (newton-physics#1533)

Signed-off-by: Viktor Reutskyy <vreutskyy@nvidia.com>

* Add versioned documentation deployment to GitHub Pages (newton-physics#1560)

* Fix broken documentation links after versioned docs deployment (newton-physics#1566)

* VBD New Features (newton-physics#1479)

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* Add banners to membership verification workflow steps (newton-physics#1569)

* Support cable junctions (newton-physics#1519)

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* Rename parameter I to inertia newton-physics#1543 (newton-physics#1551)

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* Fix example_robot_anymal_c_walk.py (newton-physics#1574)

* Change everywhere linesearch to iterative (newton-physics#1573)

* Remove standard collision pipeline (newton-physics#1538)

* USD Plumbing MJC solver attributes through resolver and custom attribute framework (newton-physics#1463)

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* Fix child shape filtering (newton-physics#1559)

* Fix ViewerRerun ignoring hidden parameter in log_mesh and log_instances (newton-physics#1555)

* Make NxN and SAP broad phase respect filtered pairs (newton-physics#1554)

* Add --quiet flag to examples to suppress Warp messages (newton-physics#1585)

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* Fix TypeError when finalizing SDF geometry with device kwarg (newton-physics#1586)

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* Enable Use of Newton IK in Lab newton-physics#662 (newton-physics#1539)

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* Update Pillow 12.0.0 to 12.1.1 (newton-physics#1612)

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* Configure banned-module-level-imports for ruff (newton-physics#1583)

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* Change default ignore_inertial_definitions from True to False (newton-physics#1537)

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* update gitignore to ignore Claude Code sandbox files (newton-physics#1628)

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* Documentation: add units to model/state docstrings (newton-physics#1649)

* fix(viewer): add missing JointType.BALL support to contact line kernel (newton-physics#1640)

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* Bump .python-version from 3.11 to 3.12 (newton-physics#1702)

* Replace CITATION.md with CITATION.cff (newton-physics#1706)

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* Make ViewerUSD reuse existing USD layers for the same output path (newton-physics#1704)

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* Reduce the memory consumption of hydroelastic contacts (newton-physics#1609)

* Fix flakiness cube stacking (newton-physics#1714)

* Fix collision shapes not toggleable in viewer UI (newton-physics#1715)

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* Override only MassAPI attributes that have been authored (newton-physics#1688)

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* Fix ArticulationView crash with fixed-joint-only articulations (newton-physics#1726)

* Improve retrieval of Jupyter base URL in ViewerViser (newton-physics#1750)

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* Disable dynamics testing for UR5e and Apollo tests to avoid CI flakiness (newton-physics#1755)

* Margin and Gap rename (newton-physics#1732)

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* Fix ViewerViser.log_lines method (newton-physics#1764)

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* fix: multi-world particle BVH indexing (newton-physics#1641)

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* API Refactor v2 (newton-physics#1749)

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* Support explicit geom mass attributes in MJCF (newton-physics#1744)

* Bump flask and werkzeug in lockfile for security (newton-physics#1769)

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* Expose VBD rigid contact forces for solver coupling (newton-physics#1745)

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* Add MJCF ellipsoid geom import and regression test (newton-physics#1772)

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* Weld equality constraints parsed from mjcf are given Nan as the default value of torquescale. The correct default should be 1.0 (newton-physics#1760)

* Improve picking accuracy and stability (newton-physics#1712)

* Franka cloth demo improvement (newton-physics#1765)

* Support computing sensing object transforms & API cleanup (newton-physics#1759)

* Remove threading workaround (newton-physics#1751)

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* Fix issue with mesh in rerun viewer (newton-physics#1768)

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* Bump version to 0.2.3

Prepare the package metadata for the v0.2.3 release tag.

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* Restore in_cup test in hydro example (newton-physics#1775)

* Fix `newton.geometry` imports and change of Mesh maxhullverts global constant

* Adapt to having both margin and gap arrays for each geom/shape

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* Fix removal of `BroadPhaseMode` IntEnum and revert to newton-sytle string literals

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* Patch more gaps (with respect to margin and gap renaming)

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* Add check for model compatibility in SolverKamino (#209)

* Fix device assignment in sparse CG test on CPU (#216)

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* Rename FKPreconditionerOptions to FKPreconditionerType

* Remove WorldDescriptor from ModelKamino (#219)

* Add geom index offset array to model info

* Replace access to world description in model

* Remove world descriptor from model

* Fix computation of kinematics residual with sparse Jacobian (#220)

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* WIP: Fix SolverKamino wrapper

* Fix circular dependency in conversions.py

* Fix some broken unit tests and WIP to fix fourbar contact conversions and rendering

* Make some conversions @staticmethods instead, because they dont need common class attributes

* Fix declaration of custom state attributes and their conversion to/from newton and kamino

* WIP: Debug model conversion and newton sim examples

* Rename and cleanup start index array of per-world geoms

* Model conversion and newton sim examples now work.

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* Add reusable joint-parameterization conversion utility

* Remove world-descriptor from model converter

* Rename helper converter that handles entity-local transforms

* Add some cleanup to DR Legs, ANYmal D and basic four-bar examples

* Fix module-level imports of additional kamino-specific development dependencies

* Fix module-level imports of additional kamino-specific development dependencies

* Fix erroneous merge conflict.

---------

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vastsoun added a commit to vastsoun/newton that referenced this pull request Mar 4, 2026
* [Warp Raytrace] Added device parameter (newton-physics#1544)

* [Warp Raytrace] Added device parameter to previously overlooked call (newton-physics#1545)

* SolverMuJoCo: Fix tolerance clamping in update_solver_options_kernel (newton-physics#1546)

* Change default shape_ke to align with MuJoCo, parse geom solref from MJCF for contact stiffness/damping (newton-physics#1491)

Signed-off-by: Alain Denzler <adenzler@nvidia.com>

* Fix log_shapes broadcasting for length-1 warp arrays (newton-physics#1550)

* Fix XPBD restitution particle index (newton-physics#1557)

* Out-of-Bound memory read in example_diffsim_bear newton-physics#1386 (newton-physics#1533)

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* Add some cleanup to DR Legs, ANYmal D and basic four-bar examples

* Fix module-level imports of additional kamino-specific development dependencies

* Fix module-level imports of additional kamino-specific development dependencies

* Fix erroneous merge conflict.

---------

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Co-authored-by: Viktor Reutskyy <vreutskyy@nvidia.com>
Co-authored-by: Lorenzo Terenzi <lorenzoterenzi96@gmail.com>
Co-authored-by: smollerNV <164020096+smollerNV@users.noreply.github.com>
Co-authored-by: twidmer <twidmer@nvidia.com>
Co-authored-by: Christian Schumacher <christian.schumacher@disney.com>
Co-authored-by: Guirec-Maloisel <25688871+Guirec-Maloisel@users.noreply.github.com>
mmacklin pushed a commit to mmacklin/newton that referenced this pull request Apr 7, 2026
@camevor camevor deleted the usd-importer-mass-properties branch April 21, 2026 13:27
@coderabbitai coderabbitai Bot mentioned this pull request May 23, 2026
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3 participants