cloth-sim
starsforks
How to install cloth-sim?
arjun988/blender-skills/cloth-sim
$npx -y skills add arjun988/blender-skills --skill cloth-simGarment blockout, cloth simulation, pin groups, and bake to shape keys or caches for characters and props in Blender via MCP.
SKILL.md
| 1 | # Cloth Sim |
| 2 | |
| 3 | Garment blockout → sim → art-direct → bake. Stable pins. Engine-friendly caches/shape keys. |
| 4 | |
| 5 | ## When to Use |
| 6 | |
| 7 | - Dresses, capes, coats, flags, banners |
| 8 | - Character clothing that needs drape |
| 9 | - Baking sim to shape keys or Alembic/USD caches |
| 10 | - Pre-roll settling before animation export |
| 11 | |
| 12 | ## Workflow |
| 13 | |
| 14 | ``` |
| 15 | Garment mesh (quad-friendly) → Vertex groups (pin/collide) |
| 16 | → Cloth modifier settings → Collision objects |
| 17 | → Pre-roll settle → Sim pass → Art-direct fixes |
| 18 | → Bake shape keys / cache → Cleanup → Export |
| 19 | ``` |
| 20 | |
| 21 | ## Mesh Prep |
| 22 | |
| 23 | - Quads preferred; even density on deforming areas |
| 24 | - Avoid long skinny triangles on folds |
| 25 | - Apply scale before sim |
| 26 | - Separate garment from body collider |
| 27 | |
| 28 | ## Vertex Groups |
| 29 | |
| 30 | | Group | Purpose | |
| 31 | |-------|---------| |
| 32 | | `PIN_Cloth` | Anchors (waist, shoulders, collar) | |
| 33 | | `COL_Ignore` | Optional non-colliding regions | |
| 34 | | `STIFF_High` | Belts, seams that should resist stretch | |
| 35 | |
| 36 | ## Settings Starters |
| 37 | |
| 38 | | Look | Quality | Speed | Bending | |
| 39 | |------|---------|-------|---------| |
| 40 | | Soft dress | 8–12 | 1.0 | Low | |
| 41 | | Stiff coat | 5–8 | 1.0 | Higher | |
| 42 | | Flag/cape | 8–10 | 1.0–1.5 | Low–mid | |
| 43 | |
| 44 | Tune mass and air viscosity for scale. Always run a settle pre-roll. |
| 45 | |
| 46 | ## Bake Targets |
| 47 | |
| 48 | | Target | Use | |
| 49 | |--------|-----| |
| 50 | | Shape keys | Game poses / few frames | |
| 51 | | Alembic/USD | Cinematic caches | |
| 52 | | Armature weights | If converting to deform-only | |
| 53 | |
| 54 | ## Constraints |
| 55 | |
| 56 | ### MUST DO |
| 57 | - Apply scale; define pin groups before long sims |
| 58 | - Collide against simplified body capsule/mesh |
| 59 | - Art-direct after sim (sculpt/corrective keys) |
| 60 | |
| 61 | ### MUST NOT DO |
| 62 | - Sim hero cloth on ultra-dense sculpt meshes |
| 63 | - Skip pre-roll (starts mid-air / exploding) |
| 64 | - Export raw unstable caches |
| 65 | |
| 66 | ## Reference Guide |
| 67 | |
| 68 | | Topic | Reference | Load When | |
| 69 | |-------|-----------|----------| |
| 70 | | Cloth Settings Presets | `references/cloth-settings-presets.md` | When needed | |
| 71 | | Pin And Collide | `references/pin-and-collide.md` | When needed | |
| 72 | | Bake Targets | `references/bake-targets.md` | When needed | |
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