Core Tutorial

Build A Mesh

let cube = cube_mesh(1.0)
let sphere = sphere_mesh(2.4, 18, 36)
let torus = torus_mesh(2.1, 0.72, 28, 16)

Both meshes use @la.Vector[Double] vertices and QuadFace topology.

Transform A Mesh

let transform = Transform3::rotation(0.2, 0.4, 0.0)
let transformed = transform.apply_mesh(cube)

Transform3 also provides translation, non-uniform scale, and composition.

The transform layer uses Luna-Flow/linear-algebra matrix construction, matrix multiplication, and mul_vec.

Inspect Face Geometry

let face = transformed.faces[0]
let normal = face_normal(transformed.vertices, face)
let center = face_center(transformed.vertices, face)
let visible = face_is_visible(transformed.vertices, face, vec3(0.0, 0.0, -4.5))

Use these helpers before projection or rendering. They are independent of any screen size or backend.