TruePhysbones

Live PhysBone Preview in Edit Mode

See exactly how your VRCPhysBones will move, without entering play mode. Tune pull, spring, stiffness, gravity, limits, and per-bone curves while a faithful simulation of your actual bone chain reacts in real time.

Preview everywhere you work

• Inspector preview panel: a live animated 3D viewport right under the VRCPhysBone inspector. Drag a slider or curve key and watch the motion change instantly.
• Scene-view ghost: a non-destructive overlay simulation drawn over your avatar. Drag the avatar around and the ghost trails, swings, and settles.

Testing, testing, testing

• Interactive grab with the real FABRIK solve — angle limits, stretch, posing. Release with Pose on and the chain holds its shape, exactly like in-game.
• Looping test motions: sway, gust, circle, drop.
• Play any AnimationClip in edit mode and watch hair and skirts react to the actual dance or walk.
• Live animator outputs — see _Angle, _Stretch, _Squish, _IsGrabbed, _IsPosed update every frame. No more wiring parameter-driven effects blind.

Accurate.

• The physics simulation is a from scratch re-implementation of the VRC PhysBone solver (versions 1.0 & 1.1, Simplified and Advanced, 60 Hz substepping, limits, stretch/squish), bit-exact in normal operation; worst-case divergence under extreme chaotic motion is under 1.5°.

Requirements
Unity 2022.3 · VRChat Avatars SDK ≥ 3.10.4

How do I report issues?

• Check the product's purchase note in the jinxxy inventory for how to report bugs.

You may use TruePhysBones in your personal and commercial projects, anything you create with it is fully yours with no restrictions and no attribution required. The tool embeds nothing in your content, so avatars you sell or commission never require your buyer to own a copy.
You may not redistribute, resell, share, alter, or decompile the tool itself. Full terms in LICENSE.md.