Bowl foot ring from the user's callipers

hotec_wheatstraw/README.md

@@ -1,12 +1,13 @@
 # hotec_wheatstraw
 
 Parametric plate, bowl and cup of the user's HOTEC wheat-straw dinnerware set (8 of each, four colours),
-version v2: the v1 geometry with the measured masses authored (plate 0.094625, bowl 0.067375, cup 0.0595 kg,
-8-piece averages on a kitchen scale, 2026-09-22).
+version v3 (2026-10-29): v2 (the v1 geometry with the measured masses authored: plate 0.094625, bowl 0.067375,
+cup 0.0595 kg, 8-piece averages on a kitchen scale, 2026-09-22) plus the bowl's foot ring and height from the user's
+callipers (a vertical ring 65.72 mm outer diameter, 3.16 mm wide, 5.57 mm tall; the bowl 73.12 mm tall).
 
 | Path | What |
 |---|---|
-| `usd/plate.usda`, `usd/bowl.usda`, `usd/cup.usda` | the assets: metres, Z up, origin at the base centre (foot plane z = 0), default prims `/HotecPlate`, `/HotecBowl`, `/HotecCup`, colour variant set `color`, 192/192/168 convex collision pieces, `physics:mass` on the default prim |
+| `usd/plate.usda`, `usd/bowl.usda`, `usd/cup.usda` | the assets: metres, Z up, origin at the base centre (foot plane z = 0), default prims `/HotecPlate`, `/HotecBowl`, `/HotecCup`, colour variant set `color`, 192/216/168 convex collision pieces, `physics:mass` on the default prim |
 | `usd/README.md` | the generator's own note for the three USDs |
 | `parameters.json` | every dimension with its status (nominal, estimated, measured) and note, capacities, checks |
 | `catalog.json` | per kind: USD name (relative to `usd/`), size, piece counts, mass, sha256 of every file |

hotec_wheatstraw/catalog.json

@@ -6,8 +6,8 @@
   "origin": "base centre: z = 0 at the foot plane, +Z up, opening toward +Z",
   "quaternion_order": "XYZW in project records; WXYZ at the USD/Isaac boundary (no poses are authored here)",
   "generator": "dishsim.hotec_gen",
-  "generator_sha256": "c7fdeef1e96b0127f9540c40c8262b9934f76dd09275eb2d0487bc57067af807",
-  "parameters_sha256": "4ac6e258a182a4afb496611ee39ffaa0f189cd4037077ef36b9e2801e073dbfc",
+  "generator_sha256": "da46d39069f7443982d348f753c4eb54a2bffabfa4ff64329fa595d7be635001",
+  "parameters_sha256": "1db0b4863e79f26a0ae465d682d7222a33f8bf8c723325320bf798e5f0fb9ea2",
   "mass_status": {
     "plate": "measured: physics:mass = 0.094625 kg on the rigid-body prim (average of 8 pieces on a kitchen scale, 2026-09-22: 8 bowls 539 g, 8 cups 476 g, 8 plates 757 g); no density, centre of mass or inertia authored (PhysX derives them from the collision shells)",
     "bowl": "measured: physics:mass = 0.067375 kg on the rigid-body prim (average of 8 pieces on a kitchen scale, 2026-09-22: 8 bowls 539 g, 8 cups 476 g, 8 plates 757 g); no density, centre of mass or inertia authored (PhysX derives them from the collision shells)",
@@ -51,7 +51,7 @@
     "plate": {
       "usd": "plate.usda",
       "default_prim": "/HotecPlate",
-      "sha256": "8b22f7a5f570a1352f1e3f3ab838b54bc07bc0e1a79e5e30a60b3a136dd2462a",
+      "sha256": "fd87b46d5458e04ffd667d516818237fd5b3d52cd117121f6b7e5512ee5155e1",
       "target_size_m": [
         0.2286,
         0.2286,
@@ -98,59 +98,59 @@
     "bowl": {
       "usd": "bowl.usda",
       "default_prim": "/HotecBowl",
-      "sha256": "0b93699e15124abc986f40cc4ac6deb3e99a9e837e7fa8975074f65b986ad376",
+      "sha256": "af7ada09fbbe74dcdb81cd61cc90b4d6078d1282d48666faf60c1b97d290fb65",
       "target_size_m": [
         0.148,
         0.148,
-        0.075
+        0.07312
       ],
       "actual_size_m": [
         0.14800000000000002,
         0.14800000000000002,
-        0.07500000000000001
+        0.07312
       ],
       "usd_size_m": [
         0.14800000190734863,
         0.14800000190734863,
-        0.07500000298023225
+        0.07311999797821045
       ],
       "usd_bounds_m": [
         [
           -0.07400000095367432,
           -0.07400000095367432,
-          -1.3877787807814457e-17
+          0.0
         ],
         [
           0.07400000095367432,
           0.07400000095367432,
-          0.07500000298023224
+          0.07311999797821045
         ]
       ],
       "size_error_m": [
         2.7755575615628914e-17,
         2.7755575615628914e-17,
-        1.3877787807814457e-17
+        0.0
       ],
-      "convex_colliders": 192,
-      "collision_bands": 8,
+      "convex_colliders": 216,
+      "collision_bands": 9,
       "collision_sectors": 24,
-      "visual_points": 11522,
-      "visual_triangles": 23040,
+      "visual_points": 11714,
+      "visual_triangles": 23424,
       "fluted": false,
       "capacity": {
-        "rim_z_m": 0.075,
-        "headspace_z_m": 0.06999999999999999,
-        "brimful_ml": 763.7747702337017,
-        "brimful_us_floz": 25.82629741977731,
-        "headspace_ml": 685.8294881511588,
-        "mesh_brimful_ml": 763.2295922500996,
-        "mesh_over_polyline": 0.9992862058229086,
+        "rim_z_m": 0.07312,
+        "headspace_z_m": 0.06812,
+        "brimful_ml": 684.2997162383577,
+        "brimful_us_floz": 23.138926139748552,
+        "headspace_ml": 606.5110435036696,
+        "mesh_brimful_ml": 683.8112670855214,
+        "mesh_over_polyline": 0.9992862058229085,
         "polygon_area_factor": 0.9992862058229084,
         "method": "pi * integral r_in(z)^2 dz of the delivered inner polyline from the cavity floor to the lowest rim point (temporary horizontal closure; asset not capped); mesh cross-check = signed volume of the inner surface closed by a fan at the rim",
         "advertised_ml": 768.9117686249999,
         "advertised_us_floz": 25.999999999999996,
-        "difference_ml": -5.136998391298221,
-        "difference_pct": -0.6680868470103424
+        "difference_ml": -84.61205238664218,
+        "difference_pct": -11.004130231736337
       },
       "checks_all_ok": true,
       "mass_kg": 0.067375,
@@ -159,7 +159,7 @@
     "cup": {
       "usd": "cup.usda",
       "default_prim": "/HotecCup",
-      "sha256": "92f8434b725c9dadce6a97fc54e697fa47ca67f6355259bce8c5178c8b8b2b7c",
+      "sha256": "482cb9e0a9bac06f60a6a77bbc305949c51a33e48d6d4e5d439189d7263495ed",
       "target_size_m": [
         0.0711,
         0.0711,
@@ -219,10 +219,10 @@
     }
   },
   "sha256": {
-    "README.md": "74183c2e285b45463d2680704cb05b9c6033e5ae861cc7b60659dcf7e7733684",
-    "bowl.usda": "0b93699e15124abc986f40cc4ac6deb3e99a9e837e7fa8975074f65b986ad376",
-    "cup.usda": "92f8434b725c9dadce6a97fc54e697fa47ca67f6355259bce8c5178c8b8b2b7c",
-    "parameters.json": "fbe28f71fac8a33547a41dc84f72f2542b9cee0cb9e204464e3bd4989932fb8d",
-    "plate.usda": "8b22f7a5f570a1352f1e3f3ab838b54bc07bc0e1a79e5e30a60b3a136dd2462a"
+    "README.md": "10eb76c2747c13099299b96cefdfd36581d0fc4339ce6f22adcaded57589cbe0",
+    "bowl.usda": "af7ada09fbbe74dcdb81cd61cc90b4d6078d1282d48666faf60c1b97d290fb65",
+    "cup.usda": "482cb9e0a9bac06f60a6a77bbc305949c51a33e48d6d4e5d439189d7263495ed",
+    "parameters.json": "503774a140cee211c00515c3734ee1c38ff5272b9eb6e7e953caecb87f19046c",
+    "plate.usda": "fd87b46d5458e04ffd667d516818237fd5b3d52cd117121f6b7e5512ee5155e1"
   }
 }

hotec_wheatstraw/parameters.json

@@ -1,7 +1,7 @@
 {
   "schema_version": 1,
-  "parameters_sha256": "4ac6e258a182a4afb496611ee39ffaa0f189cd4037077ef36b9e2801e073dbfc",
-  "generator_sha256": "c7fdeef1e96b0127f9540c40c8262b9934f76dd09275eb2d0487bc57067af807",
+  "parameters_sha256": "1db0b4863e79f26a0ae465d682d7222a33f8bf8c723325320bf798e5f0fb9ea2",
+  "generator_sha256": "da46d39069f7443982d348f753c4eb54a2bffabfa4ff64329fa595d7be635001",
   "kinds": {
     "plate": {
       "rim_diameter_m": {
@@ -71,9 +71,9 @@
         "note": "listing: 5.8 in maximum diameter"
       },
       "height_m": {
-        "value": 0.075,
-        "status": "nominal",
-        "note": "listing: 2.95 in overall height"
+        "value": 0.07312,
+        "status": "measured",
+        "note": "user override: bowl.height_m=0.07312"
       },
       "wall_m": {
         "value": 0.0035,
@@ -86,19 +86,19 @@
         "note": ""
       },
       "foot_diameter_m": {
-        "value": 0.07,
-        "status": "estimated",
-        "note": "about 47 % of the rim, middle of the photo's 45-50 %"
+        "value": 0.06572,
+        "status": "measured",
+        "note": "user override: bowl.foot_diameter_m=0.06572"
       },
       "foot_width_m": {
-        "value": 0.005,
-        "status": "estimated",
-        "note": ""
+        "value": 0.00316,
+        "status": "measured",
+        "note": "user override: bowl.foot_width_m=0.00316"
       },
       "foot_height_m": {
-        "value": 0.004,
-        "status": "estimated",
-        "note": "distinct foot ring in the photo"
+        "value": 0.00557,
+        "status": "measured",
+        "note": "user override: bowl.foot_height_m=0.00557"
       },
       "side_bulge_m": {
         "value": 0.008,
@@ -108,7 +108,7 @@
       "side_rows": {
         "value": 2,
         "status": "estimated",
-        "note": "collision rows along the side arc (2 -> 8 bands, 192 pieces): measured cavity intrusion 0.85 mm; 3 rows (216 pieces) would give 0.54 mm"
+        "note": "collision rows along the side arc (2 -> 9 bands with the vertical foot ring, 216 pieces): cavity intrusion 0.96 mm on the 2026-10-29 measured bowl; 3 rows (240 pieces) would give 0.60 mm"
       },
       "grooves": {
         "value": {
@@ -208,19 +208,19 @@
   "capacity": {
     "plate": null,
     "bowl": {
-      "rim_z_m": 0.075,
-      "headspace_z_m": 0.06999999999999999,
-      "brimful_ml": 763.7747702337017,
-      "brimful_us_floz": 25.82629741977731,
-      "headspace_ml": 685.8294881511588,
-      "mesh_brimful_ml": 763.2295922500996,
-      "mesh_over_polyline": 0.9992862058229086,
+      "rim_z_m": 0.07312,
+      "headspace_z_m": 0.06812,
+      "brimful_ml": 684.2997162383577,
+      "brimful_us_floz": 23.138926139748552,
+      "headspace_ml": 606.5110435036696,
+      "mesh_brimful_ml": 683.8112670855214,
+      "mesh_over_polyline": 0.9992862058229085,
       "polygon_area_factor": 0.9992862058229084,
       "method": "pi * integral r_in(z)^2 dz of the delivered inner polyline from the cavity floor to the lowest rim point (temporary horizontal closure; asset not capped); mesh cross-check = signed volume of the inner surface closed by a fan at the rim",
       "advertised_ml": 768.9117686249999,
       "advertised_us_floz": 25.999999999999996,
-      "difference_ml": -5.136998391298221,
-      "difference_pct": -0.6680868470103424
+      "difference_ml": -84.61205238664218,
+      "difference_pct": -11.004130231736337
     },
     "cup": {
       "rim_z_m": 0.1049,
@@ -243,64 +243,64 @@
     "bowl": [
       {
         "wall_m": 0.0025,
-        "foot_diameter_m": 0.060000000000000005,
-        "brimful_ml": 742.1529227295457
+        "foot_diameter_m": 0.05572,
+        "brimful_ml": 664.3368384035582
       },
       {
         "wall_m": 0.0025,
-        "foot_diameter_m": 0.07,
-        "brimful_ml": 789.1452854411133
+        "foot_diameter_m": 0.06572,
+        "brimful_ml": 708.3097357635494
       },
       {
         "wall_m": 0.0025,
-        "foot_diameter_m": 0.08,
-        "brimful_ml": 838.885689844846
+        "foot_diameter_m": 0.07572,
+        "brimful_ml": 755.13793328804
       },
       {
         "wall_m": 0.0035,
-        "foot_diameter_m": 0.060000000000000005,
-        "brimful_ml": 717.5594510578552
+        "foot_diameter_m": 0.05572,
+        "brimful_ml": 641.0515395662217
       },
       {
         "wall_m": 0.0035,
-        "foot_diameter_m": 0.07,
-        "brimful_ml": 763.7747702337017
+        "foot_diameter_m": 0.06572,
+        "brimful_ml": 684.2997162383577
       },
       {
         "wall_m": 0.0035,
-        "foot_diameter_m": 0.08,
-        "brimful_ml": 812.6936200619017
+        "foot_diameter_m": 0.07572,
+        "brimful_ml": 730.3794395146397
       },
       {
         "wall_m": 0.0045000000000000005,
-        "foot_diameter_m": 0.060000000000000005,
-        "brimful_ml": 693.3497301705631
+        "foot_diameter_m": 0.05572,
+        "brimful_ml": 618.1161447430788
       },
       {
         "wall_m": 0.0045000000000000005,
-        "foot_diameter_m": 0.07,
-        "brimful_ml": 738.7902873548218
+        "foot_diameter_m": 0.06572,
+        "brimful_ml": 660.6350331393794
       },
       {
         "wall_m": 0.0045000000000000005,
-        "foot_diameter_m": 0.08,
-        "brimful_ml": 786.8966681008886
+        "foot_diameter_m": 0.07572,
+        "brimful_ml": 705.9699890405051
       },
       {
         "side_bulge_m": 0.004,
-        "brimful_ml": 688.4311960836832
+        "brimful_ml": 614.3636512123285
       },
       {
         "side_bulge_m": 0.006,
-        "brimful_ml": 725.627910319436
+        "brimful_ml": 648.8792565266081
       },
       {
         "side_bulge_m": 0.008,
-        "brimful_ml": 763.7747702337017
+        "brimful_ml": 684.2997162383577
       },
       {
         "side_bulge_m": 0.01,
-        "brimful_ml": 802.9689566172092
+        "brimful_ml": 720.7483635267116
       }
     ],
     "cup": [
@@ -365,8 +365,8 @@
       "mesh": {
         "closed_and_oriented": true,
         "unit_normals": true,
-        "min_face_area_m2": 9.381313778810588e-07,
-        "material_volume_ml": 206.6546371832463,
+        "min_face_area_m2": 9.381313778810852e-07,
+        "material_volume_ml": 206.65463718324625,
         "points": 8642,
         "triangles": 17280
       },
@@ -410,7 +410,7 @@
         "simple_polygon": true,
         "polygon_crossings": 0,
         "inner_z_monotone": true,
-        "min_wall_m": 0.0029109062488648424,
+        "min_wall_m": 0.002915529403626498,
         "min_wall_ok": true,
         "rim_flat_m": 0.0010499999999999954,
         "rim_flat_ok": true
@@ -418,10 +418,10 @@
       "mesh": {
         "closed_and_oriented": true,
         "unit_normals": true,
-        "min_face_area_m2": 3.4720256421816236e-07,
-        "material_volume_ml": 127.96044224245492,
-        "points": 11522,
-        "triangles": 23040
+        "min_face_area_m2": 3.9145072298913167e-07,
+        "material_volume_ml": 114.37769683902417,
+        "points": 11714,
+        "triangles": 23424
       },
       "collision": {
         "cavity_probes_open": true,
@@ -429,10 +429,10 @@
         "mid_radius_open": true,
         "foot_solid": true,
         "floor_solid": true,
-        "max_cavity_intrusion_m": 0.0008525603645592232,
+        "max_cavity_intrusion_m": 0.0009622260839323836,
         "intrusion_ok": true,
-        "min_piece_volume_m3": 7.661440260639853e-08,
-        "pieces": 192,
+        "min_piece_volume_m3": 2.3936818222650372e-08,
+        "pieces": 216,
         "max_collider_radius_m": 0.0740000000005718,
         "crest_radius_m": 0.07400000000000001,
         "no_protrusion": true
@@ -441,19 +441,19 @@
         "target_size_m": [
           0.148,
           0.148,
-          0.075
+          0.07312
         ],
         "actual_size_m": [
           0.14800000000000002,
           0.14800000000000002,
-          0.07500000000000001
+          0.07312
         ],
         "size_error_m": [
           2.7755575615628914e-17,
           2.7755575615628914e-17,
-          1.3877787807814457e-17
+          0.0
         ],
-        "min_z_m": -1.3877787807814457e-17,
+        "min_z_m": 0.0,
         "ok": true
       },
       "all_ok": true
@@ -472,7 +472,7 @@
         "closed_and_oriented": true,
         "unit_normals": true,
         "min_face_area_m2": 1.9821347971600218e-07,
-        "material_volume_ml": 54.94290984730858,
+        "material_volume_ml": 54.94290984730846,
         "points": 9218,
         "triangles": 18432
       },

hotec_wheatstraw/source/README.md

@@ -1,23 +1,36 @@
 # hotec_wheatstraw/source
 
-`hotec_gen.py` is the generator, moved out of the code repo on 2026-10-21 (it was `code/src/dishsim/hotec_gen.py`).
-Its sha256 `c7fdeef1e96b0127f9540c40c8262b9934f76dd09275eb2d0487bc57067af807` is the `generator_sha256` stamped in
-every USD and in `catalog.json`; the file is byte-identical, so its docstring still shows the old `-m dishsim.hotec_gen`
+`hotec_gen.py` is the generator, moved out of the code repo on 2026-10-21 (it was `code/src/dishsim/hotec_gen.py`) and
+edited here on 2026-10-29: the bowl's foot is a vertical ring (the annulus `foot_diameter_m / 2 - foot_width_m` ..
+`foot_diameter_m / 2`, z 0 .. `foot_height_m`, vertical faces, a flat recess ceiling, the outer wall from the ring's top
+outer edge); the plate and cup profiles are unchanged. Its sha256
+`da46d39069f7443982d348f753c4eb54a2bffabfa4ff64329fa595d7be635001` is the `generator_sha256` stamped in every USD and in
+`catalog.json` (the 2026-10-21 file, `c7fdeef1...`, stamped v2); its docstring still shows the old `-m dishsim.hotec_gen`
 form.
 
-Last run (2026-09-22), from the code repo root inside the container; the identical file is committed at `9e3b163`
-(2026-10-04), the first commit carrying it:
+Last run (2026-10-29, v3: v2 plus the bowl foot ring and height from the user's callipers), on the Mac from the code
+repo root (code repo `plan` at `8b2a4fb` plus uncommitted edits; the generator lives only in this folder). The Mac has no
+container, so it ran in a uv environment with Python 3.10, numpy 1.26.0, scipy 1.14.1 and usd-core 24.5. A control build
+of v2 there reproduced the shipped plate, cup and README byte for byte. `--no-figures` keeps the catalog to the shipped
+files, as in v2:
 
 ```bash
-code/util/run_py.sh -m dishsim.hotec_gen --out data/assets/models/hotec_wheatstraw/v2 \
-    --set plate.mass_kg=0.094625 --set bowl.mass_kg=0.067375 --set cup.mass_kg=0.0595
+uv run --no-project --python 3.10 --with numpy==1.26.0 --with scipy==1.14.1 --with usd-core==24.5 --with matplotlib==3.9.2 \
+    python data/assets/hotec_wheatstraw/source/hotec_gen.py --out <scratch> --no-figures \
+    --set plate.mass_kg=0.094625 --set bowl.mass_kg=0.067375 --set cup.mass_kg=0.0595 \
+    --set bowl.foot_diameter_m=0.06572 --set bowl.foot_width_m=0.00316 --set bowl.foot_height_m=0.00557 \
+    --set bowl.height_m=0.07312
 ```
 
-The same build from this folder (the generator refuses to overwrite; build into a scratch folder, then copy the three
-`.usda` and `README.md` into `../usd/` and the two JSON files into `../`):
+The same build inside the container: `code/util/run_py.sh data/assets/hotec_wheatstraw/source/hotec_gen.py` with the
+same flags. The generator refuses to overwrite, so build into a scratch folder, then copy the three `.usda` and
+`README.md` into `../usd/` and the two JSON files into `../`. Then regenerate the dish manifests with
+`python3 code/src/sampler/writers/hotec_wheatstraw.py` (code repo). Tests:
 
 ```bash
-code/util/run_py.sh data/assets/hotec_wheatstraw/source/hotec_gen.py --out <scratch> \
-    --set plate.mass_kg=0.094625 --set bowl.mass_kg=0.067375 --set cup.mass_kg=0.0595
 code/util/run_py.sh -m pytest data/assets/hotec_wheatstraw/source -q      # test_hotec_gen.py, Kit-free
 ```
+
+v2 (2026-09-22) was `code/util/run_py.sh -m dishsim.hotec_gen --out data/assets/models/hotec_wheatstraw/v2 --set
+plate.mass_kg=0.094625 --set bowl.mass_kg=0.067375 --set cup.mass_kg=0.0595` (corallab container; the generator file
+committed at `9e3b163`).

hotec_wheatstraw/source/hotec_gen.py

@@ -11,6 +11,12 @@ control rows are revolved into convex collision pieces; a dense PCHIP curve thro
 rows is revolved into the visual shell, so the collider never sits outside the visual by more
 than the decorative feature depth. Metres, Z up, origin at the base centre (foot plane z = 0).
 
+The bowl's foot is a VERTICAL ring (2026-10-29, the user's calliper measurement): the annulus
+``foot_diameter_m / 2 - foot_width_m`` .. ``foot_diameter_m / 2`` from z = 0 to ``foot_height_m``, with vertical
+inner and outer faces, the recess ceiling flat at ``foot_height_m`` out to the inner face, and the outer wall
+starting at the ring's top outer edge; the floor slab ``floor_m`` sits on the ceiling. The plate keeps its
+drafted foot (the outer wall from the ring's bottom edge, a 3 mm step to the ceiling).
+
 No mass is authored anywhere (no ``PhysicsMassAPI``, no ``physics:density``); the user
 measures the pieces. Capacity is the exact volume of revolution of the inner profile up to the
 lowest rim point (a temporary horizontal closure that is never written into the asset).
@@ -93,13 +99,17 @@ PARAMETERS = {
         "height_m": _p(.075, "nominal", "listing: 2.95 in overall height"),
         "wall_m": _p(.0035, "estimated", "as the plate"),
         "floor_m": _p(.0040, "estimated", ""),
-        "foot_diameter_m": _p(.070, "estimated", "about 47 % of the rim, middle of the photo's 45-50 %"),
-        "foot_width_m": _p(.005, "estimated", ""),
-        "foot_height_m": _p(.004, "estimated", "distinct foot ring in the photo"),
+        "foot_diameter_m": _p(.070, "estimated", "about 47 % of the rim, middle of the photo's 45-50 %; the vertical foot "
+                                                 "ring's OUTER face diameter"),
+        "foot_width_m": _p(.005, "estimated", "radial width of the vertical foot ring (inner face at foot_diameter/2 - width)"),
+        "foot_height_m": _p(.004, "estimated", "distinct foot ring in the photo; height of the vertical ring = recess depth "
+                                               "(the ceiling is flat at this height, the outer wall starts at the ring's top "
+                                               "outer edge)"),
         "side_bulge_m": _p(.008, "estimated", "rounded flank (NOT a hemisphere): sagitta of the side arc; "
                                               "the dominant capacity uncertainty"),
-        "side_rows": _p(2, "estimated", "collision rows along the side arc (2 -> 8 bands, 192 pieces): measured "
-                                        "cavity intrusion 0.85 mm; 3 rows (216 pieces) would give 0.54 mm"),
+        "side_rows": _p(2, "estimated", "collision rows along the side arc (2 -> 9 bands with the vertical foot ring, "
+                                        "216 pieces): cavity intrusion 0.96 mm on the 2026-10-29 measured bowl; 3 rows "
+                                        "(240 pieces) would give 0.60 mm"),
         "grooves": _p({"heights_m": [.054, .060, .066], "depth_m": .0006, "half_width_m": .00125}, "estimated",
                       "three horizontal grooves on the upper body, 6 mm pitch; visual only, collision smooth"),
         "mass_kg": _p(None, "nominal", "not authored until measured: --set kind.mass_kg=<kg> authors physics:mass on the rigid-body prim"),
@@ -299,6 +309,10 @@ class Curves:
     The interior wall is the exact offset of the outer wall by the wall thickness; where that
     offset dips below the cavity floor it is projected up onto the floor plane, which makes the
     flat floor (the plate's eating well) a DERIVED radius rather than an estimate.
+
+    Bowl foot rows (the vertical ring): outer (0, fh) (rfi, fh) (rfi, 0) (rfo, 0), then the wall from (rfo, fh);
+    inner (0, ft) (rfi, ft) and two points a third and two thirds of the way along the floor top to the wall's
+    first inner point, so every band is a non-degenerate convex quad (or triangle) inside the material.
     """
 
     def __init__(self, kind, v):
@@ -323,6 +337,18 @@ class Curves:
                          ((rb, 0.), self._floor(np.array([rb, 0.]) + w * n_f))]
             self.side_rows = 0
             self.foot_outer_radius = rb
+        elif kind == "bowl":                                      # the vertical foot ring (2026-10-29)
+            rfo = v["foot_diameter_m"] / 2
+            rfi = rfo - fw
+            self.outer, self.tangent = _arc((rfo, fh), (R, H - self.lr), v["side_bulge_m"])
+            r_e = float(self.inner_at(0.)[0])                    # the wall's first inner point, on the floor top
+            if not r_e > rfi + 1e-6:
+                raise ValueError(f"bowl foot: the wall's first inner point r {r_e:.5f} is not outside the ring's inner "
+                                 f"face {rfi:.5f}; the vertical-ring rows need it there")
+            self.foot = [((0., fh), (0., self.ft)), ((rfi, fh), (rfi, self.ft)),
+                         ((rfi, 0.), (rfi + (r_e - rfi) / 3, self.ft)), ((rfo, 0.), (rfi + 2 * (r_e - rfi) / 3, self.ft))]
+            self.side_rows = int(v["side_rows"])
+            self.foot_outer_radius = rfo
         else:
             rfo = v["foot_diameter_m"] / 2
             rfi = rfo - fw

hotec_wheatstraw/usd/README.md

@@ -7,7 +7,7 @@ Masses are authored as physics:mass on each default prim (average of 8 pieces on
 | kind | size [m] | pieces | brimful [mL] | advertised [mL] |
 |---|---|---:|---:|---:|
 | plate | 0.2286 x 0.2286 x 0.0400 | 192 | - | - |
-| bowl | 0.1480 x 0.1480 x 0.0750 | 192 | 764 | 769 |
+| bowl | 0.1480 x 0.1480 x 0.0731 | 216 | 684 | 769 |
 | cup | 0.0711 x 0.0711 x 0.1049 | 168 | 283 | 355 |
 
-generator sha256 c7fdeef1e96b0127..., parameters sha256 4ac6e258a182a4af...
+generator sha256 da46d39069f74439..., parameters sha256 1db0b4863e79f26a...

hotec_wheatstraw/usd/cup.usda

@@ -3,10 +3,10 @@
     customLayerData = {
         string dimension_status = "nominal listing targets plus documented estimates; not measured"
         string generator = "dishsim.hotec_gen"
-        string generator_sha256 = "c7fdeef1e96b0127f9540c40c8262b9934f76dd09275eb2d0487bc57067af807"
+        string generator_sha256 = "da46d39069f7443982d348f753c4eb54a2bffabfa4ff64329fa595d7be635001"
         string hotec_kind = "cup"
         string hotec_parameters_json = '{"base_diameter_m": {"note": "about 79 % of the rim: the mild taper seen in the photos", "status": "estimated", "value": 0.056}, "floor_m": {"note": "", "status": "estimated", "value": 0.004}, "flutes": {"note": "vertical facets of the original cup; count and depth to be measured; count must divide the 96-vertex ring; outer surface only", "status": "estimated", "value": {"count": 12, "depth_m": 0.0006, "fade_z_m": [0.012, 0.02, 0.09, 0.098], "shape": "facet"}}, "foot_height_m": {"note": "shallow recess under the base", "status": "estimated", "value": 0.002}, "foot_width_m": {"note": "base ring width", "status": "estimated", "value": 0.004}, "height_m": {"note": "listing: 4.13 in, PROVISIONAL", "status": "nominal", "value": 0.1049}, "mass_kg": {"note": "user override: cup.mass_kg=0.0595", "status": "measured", "value": 0.0595}, "rim_diameter_m": {"note": "listing: 2.8 in maximum width, PROVISIONAL (the listing mixes the 20-pack fluted cup and the 24-pack ringed cup)", "status": "nominal", "value": 0.0711}, "rings": {"note": "the ringed-cup alternative: set heights_m to e.g. [0.030, 0.050, 0.070] and flutes.count to 0", "status": "estimated", "value": {"depth_m": 0.0006, "half_width_m": 0.00125, "heights_m": []}}, "wall_m": {"note": "cups are moulded thinner than plates", "status": "estimated", "value": 0.0025}}'
-        string hotec_parameters_sha256 = "4ac6e258a182a4afb496611ee39ffaa0f189cd4037077ef36b9e2801e073dbfc"
+        string hotec_parameters_sha256 = "1db0b4863e79f26a0ae465d682d7222a33f8bf8c723325320bf798e5f0fb9ea2"
         string mass_status = "measured: physics:mass = 0.0595 kg on the rigid-body prim (average of 8 pieces on a kitchen scale, 2026-09-22: 8 bowls 539 g, 8 cups 476 g, 8 plates 757 g); no density, centre of mass or inertia authored (PhysX derives them from the collision shells)"
         string origin = "base centre: z = 0 at the foot plane, +Z up, opening toward +Z"
     }
@@ -27,7 +27,7 @@ def Xform "HotecCup" (
     custom string hotec:kind = "cup"
     custom string hotec:massStatus = "measured: physics:mass = 0.0595 kg on the rigid-body prim (average of 8 pieces on a kitchen scale, 2026-09-22: 8 bowls 539 g, 8 cups 476 g, 8 plates 757 g); no density, centre of mass or inertia authored (PhysX derives them from the collision shells)"
     custom string hotec:origin = "base centre: z = 0 at the foot plane, +Z up, opening toward +Z"
-    custom string hotec:parametersSha256 = "4ac6e258a182a4afb496611ee39ffaa0f189cd4037077ef36b9e2801e073dbfc"
+    custom string hotec:parametersSha256 = "1db0b4863e79f26a0ae465d682d7222a33f8bf8c723325320bf798e5f0fb9ea2"
     float physics:mass = 0.0595
     bool physxRigidBody:enableCCD = 1
     float physxRigidBody:maxDepenetrationVelocity = 0.5

hotec_wheatstraw/usd/plate.usda

@@ -3,10 +3,10 @@
     customLayerData = {
         string dimension_status = "nominal listing targets plus documented estimates; not measured"
         string generator = "dishsim.hotec_gen"
-        string generator_sha256 = "c7fdeef1e96b0127f9540c40c8262b9934f76dd09275eb2d0487bc57067af807"
+        string generator_sha256 = "da46d39069f7443982d348f753c4eb54a2bffabfa4ff64329fa595d7be635001"
         string hotec_kind = "plate"
         string hotec_parameters_json = '{"floor_m": {"note": "floor slightly thicker than the wall", "status": "estimated", "value": 0.004}, "foot_diameter_m": {"note": "about 61 % of the rim; a coupe plate carries a wide foot ring", "status": "estimated", "value": 0.14}, "foot_height_m": {"note": "recess depth under the base centre", "status": "estimated", "value": 0.004}, "foot_width_m": {"note": "moulded ring width", "status": "estimated", "value": 0.006}, "grooves": {"note": "no decorative grooves seen on the plate", "status": "estimated", "value": {"depth_m": 0.0006, "half_width_m": 0.00125, "heights_m": []}}, "height_m": {"note": "listing: 1.6 in overall height, foot plane to rim top", "status": "nominal", "value": 0.04}, "mass_kg": {"note": "user override: plate.mass_kg=0.094625", "status": "measured", "value": 0.094625}, "rim_diameter_m": {"note": "listing: 9 in maximum outer diameter", "status": "nominal", "value": 0.2286}, "side_bulge_m": {"note": "sagitta of the convex underside arc foot -> rim (0 = straight cone); the flat eating well is DERIVED: where the wall offset rises above the floor", "status": "estimated", "value": 0.006}, "side_rows": {"note": "collision rows along the side arc (2 -> 8 bands, 192 pieces): measured cavity intrusion 0.59 mm; 3 rows (216 pieces) would give 0.42 mm", "status": "estimated", "value": 2}, "wall_m": {"note": "wheat-straw PP mouldings run 2.5-4 mm", "status": "estimated", "value": 0.0035}}'
-        string hotec_parameters_sha256 = "4ac6e258a182a4afb496611ee39ffaa0f189cd4037077ef36b9e2801e073dbfc"
+        string hotec_parameters_sha256 = "1db0b4863e79f26a0ae465d682d7222a33f8bf8c723325320bf798e5f0fb9ea2"
         string mass_status = "measured: physics:mass = 0.094625 kg on the rigid-body prim (average of 8 pieces on a kitchen scale, 2026-09-22: 8 bowls 539 g, 8 cups 476 g, 8 plates 757 g); no density, centre of mass or inertia authored (PhysX derives them from the collision shells)"
         string origin = "base centre: z = 0 at the foot plane, +Z up, opening toward +Z"
     }
@@ -27,7 +27,7 @@ def Xform "HotecPlate" (
     custom string hotec:kind = "plate"
     custom string hotec:massStatus = "measured: physics:mass = 0.094625 kg on the rigid-body prim (average of 8 pieces on a kitchen scale, 2026-09-22: 8 bowls 539 g, 8 cups 476 g, 8 plates 757 g); no density, centre of mass or inertia authored (PhysX derives them from the collision shells)"
     custom string hotec:origin = "base centre: z = 0 at the foot plane, +Z up, opening toward +Z"
-    custom string hotec:parametersSha256 = "4ac6e258a182a4afb496611ee39ffaa0f189cd4037077ef36b9e2801e073dbfc"
+    custom string hotec:parametersSha256 = "1db0b4863e79f26a0ae465d682d7222a33f8bf8c723325320bf798e5f0fb9ea2"
     float physics:mass = 0.094625
     bool physxRigidBody:enableCCD = 1
     float physxRigidBody:maxDepenetrationVelocity = 0.5