UV Projections

On a Mesh

mesh.computeUVs()              // box projection (default)
mesh.computeUVs('planar')      // Y-down onto XZ plane
mesh.computeUVs('cylindrical')
mesh.computeUVs('spherical')

Standalone

Operates on a THREE.BufferGeometry directly (mutates in place):

import { projectUVs } from 'shapecraft'

projectUVs(geometry, 'box')

Projection modes

Mode	Description
`box`	Tri-planar — picks projection axis per vertex based on normal
`planar`	Projects from Y axis down. `u = x`, `v = z` (normalized to bounding box)
`cylindrical`	`u = atan2(z, x)`, `v = y` (normalized)
`spherical`	`u = atan2(z, x)`, `v = acos(y/r)`