A mesh whose points are stored once and whose triangles refer to them by number, the layout
glTF and game engines draw. positions holds x, y, z for each point in turn, indices three
point numbers, counted from 0, for each triangle, and normals, when present, one direction
x, y, z for each point. Triangles that share a corner share its number, which is how the mesh
knows its neighbours.
A mesh whose points are stored once and whose triangles refer to them by number, the layout glTF and game engines draw.
positionsholds x, y, z for each point in turn,indicesthree point numbers, counted from 0, for each triangle, andnormals, when present, one direction x, y, z for each point. Triangles that share a corner share its number, which is how the mesh knows its neighbours.