Struct ObjEncoder 

pub struct ObjEncoder { /* private fields */ }

Wavefront OBJ encoder.

By default the encoder emits a standalone OBJ (no mtllib directive). Call ObjEncoder::with_mtl_basename to embed an mtllib <basename>.mtl line at the top, in which case the caller is responsible for writing the companion MTL file alongside (use crate::mtl::serialize_mtl for that).

The encoder is loss-tolerant — it preserves the OBJ-specific extras (obj:groups, obj:smoothing_group, obj:original_face_arities, obj:usemtl, obj:mtllibs) populated by the decoder, so a decode → encode → decode round-trip is structurally stable.

Implementations

impl ObjEncoder

pub fn new() -> Self

pub fn with_mtl_basename(self, basename: impl Into<String>) -> Self

Emit mtllib <basename>.mtl at the top of the output. The basename is used verbatim (no .mtl extension is appended twice; if you supply "foo" the directive becomes mtllib foo.mtl).

Trait Implementations

impl Debug for ObjEncoder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ObjEncoder

fn default() -> ObjEncoder

Returns the “default value” for a type.

impl Mesh3DEncoder for ObjEncoder

fn encode(&mut self, scene: &Scene3D) -> Result<Vec<u8>>

Serialise scene to bytes in the encoder’s format.