Wing Auto Fit — Attach wings to your avatar's back in one click [VRChat / Unity]

Wing Auto Fit is a Unity editor extension that attaches wings to your avatar's back in one click. It finds the back surface around the shoulder blades from the body mesh, puts the wings' base there, sizes the wings to the avatar (based on their own Hips bone or where their creator placed them; wings not made with their origin at the avatar's feet keep their size), and makes them follow the body (Modular Avatar BoneProxy if present, otherwise they become a child of the Chest bone). It can also hide the avatar's own wings with one checkbox. Original meshes and textures are not modified. Undo with Ctrl+Z.

No wing or avatar models are included (tool only).

Free vs Full

• Free trial: try the one-click fit on your own avatar and see the result. Preview only: it goes back after 30 seconds, or when you save the scene, enter Play mode, press Ctrl+Z or close the window.
• Full: keeps the result, plus sliders for height, inset, up/down angle, and size.

Try the Free trial with your own wings and avatar first to see how it fits. Importing the Full version over the Free version replaces it.

Carefully tested before release

Made by Kotokoto Lab, an independent creator. This version was tested on 3 popular free avatars plus the chibi version of one of them, with free wings from BOOTH and our own samples. The results — including where it does not work well — are written below.

Tested with 10 wings (4 from 3 free BOOTH items including left/right separate wings and a Merge Armature setup, 5 self-made samples including 2 with a different origin, and 1 static shape copy of an avatar's wings) on 4 avatars (40 combinations). Left/right separate wings keep their creator's spacing. Sets that combine wings with other parts (like a halo) move those parts too (in one BOOTH set, the halo ended up in front of the face). Use a wings-only prefab if there is one; otherwise hide the halo object or move it back above the head yourself. If the wing roots would be wider than the back, the wings are scaled down to fit the back (a note is shown). On the avatar that has its own wings, the base was within 1 cm in height of the base of its own wings. On the 3 adult-sized avatars with 4 wings (a plain sample, a sample with BoneProxy, and 2 BOOTH wings with Merge Armature and BoneProxy), position and size stayed the same after the upload-time processing (Modular Avatar / Avatar Optimizer). On the chibi avatar, which has no back skin in its body mesh, the wings were placed on the back of the clothes (a note is shown). The wings keep the shape and spread their creator made; large wings may touch clothes or hair. With hoods or coats, the base goes inside the clothes. PhysBone settings are kept as they are.

Requirements

Unity 2022.3 (tested on 2022.3.22f1), Humanoid avatar with Chest, neck and arm bones. Works without Modular Avatar.

How to install

• Download the .unitypackage (Free or Full) and drag it into the Project window, then click Import.
• Open Tools > Wing Auto Fit. The window has an "English" checkbox at the top.

Terms

OK for personal and commercial use. Do not redistribute or resell the tool. Follow each creator's terms for avatars and wings. Use at your own risk; back up important projects first.

Questions or bug reports: please send a message through the shop.