geom-normals

Compute normals for the mesh based on faces/cells information

Usage

var normals = require('geom-normals')
var cube = require('primitive-cube')()

cube.normals = normals(cube.positions, cube.cells)

API

normals(positions, cells, [out])

• positions - array of [x, y, z] positions
• cells - array of [i, j, k] triangles
• out - optional array to put normals into

Returns array of computed normals, one per vertex

Note: If there are two vertices with the same position but different index there will be discontinuity (hard edge)

License

MIT, see LICENSE.md for details.