Struct MeshDecoder 

pub struct MeshDecoder { /* private fields */ }

Available on crate feature decoder only.

Decoder for Draco triangle mesh bitstreams.

MeshDecoder reads a .drc bitstream produced by MeshEncoder (or C++ Draco) and reconstructs a Mesh: faces, attributes, and any metadata. It handles both EdgeBreaker and sequential connectivity and dequantizes attributes back to their original data types.

A point-cloud bitstream (geometry type 0) is also accepted and decoded into the mesh’s underlying PointCloud with no faces.

Examples

use draco_core::{DecoderBuffer, Mesh, MeshDecoder};

let mut mesh = Mesh::new();
MeshDecoder::new().decode(&mut DecoderBuffer::new(drc_bytes), &mut mesh)?;
println!("{} faces, {} points", mesh.num_faces(), mesh.num_points());

A full encode/decode round trip is shown on the MeshEncoder type docs.

Implementations

impl MeshDecoder

pub fn new() -> Self

Creates a mesh decoder with default state.

pub fn decode( &mut self, in_buffer: &mut DecoderBuffer<'_>, out_mesh: &mut Mesh, ) -> Status

Decodes a Draco mesh from in_buffer into out_mesh.

Reads the header, optional metadata, connectivity, and attributes, populating out_mesh. Point-cloud bitstreams are decoded into the mesh’s underlying point cloud (no faces).

Errors

Returns an error if the magic/header is invalid, the bitstream version is unsupported, the geometry is malformed, or a required feature (such as point_cloud_decode) is disabled.

pub fn get_corner_table_ref(&self) -> Option<&CornerTable>

Test helper: Returns a reference to the decoded corner table (if any). This is useful in unit tests that wish to compare encoder/decoder corner table structures without accessing internal decoder types.

Trait Implementations

impl Default for MeshDecoder

fn default() -> Self

Returns the “default value” for a type.