Struct libredr::Geometry

pub struct Geometry {
    trimesh: Vec<TriMesh>,
}

Rust interface for Geometry

Trimeshes in scene geometry are lazy-loaded

Fields

trimesh: Vec<TriMesh>

Implementations

impl Geometry

pub fn new() -> Geometry

Construct an empty Geometry

pub fn size( &self, data_cache: &Arc<Mutex<HashMap<Hash, (i64, Data)>>>, ) -> Result<usize, Error>

Number of all faces in Geometry

pub fn hash(&self) -> Hash

Calculate hash for lazy-loading

Currently use 32-byte long hash from BLAKE3 algorithm.

pub fn required_data(&self) -> HashSet<Hash>

Get all hashes of lazy-loading Data

This includes all v, vn, and vt

pub fn add_vertex_hash( &mut self, vertex_hash: Hash, transform_v: ArrayBase<OwnedRepr<f32>, Dim<[usize; 2]>>, transform_vt: ArrayBase<OwnedRepr<f32>, Dim<[usize; 2]>>, data_cache: &Arc<Mutex<HashMap<Hash, (i64, Data)>>>, ) -> Result<Hash, Error>

Add a trimesh to Geometry from hashed vertex

Arguments

• vertex_hash - Vertex hash, generated from previous Self::add_trimesh or Self::add_obj
• transform_v - Homogeneous transformation matrix for vertex coordinate 4 * 4
• transform_vt - Homogeneous transformation matrix for vertex texture coordinate 3 * 3

vertex is hashed and cached for better performance Return vertex hash for later use in add_vertex_hash

pub fn add_trimesh( &mut self, vertex: ArrayBase<OwnedRepr<f32>, Dim<[usize; 3]>>, transform_v: ArrayBase<OwnedRepr<f32>, Dim<[usize; 2]>>, transform_vt: ArrayBase<OwnedRepr<f32>, Dim<[usize; 2]>>, data_cache: &Arc<Mutex<HashMap<Hash, (i64, Data)>>>, ) -> Result<Hash, Error>

Add a trimesh to Geometry

Arguments

• vertex - Vertex coordinate, normal, and texture coordinate (3 + 3 + 2) * 3 * N
• transform_v - Homogeneous transformation matrix for vertex coordinate 4 * 4
• transform_vt - Homogeneous transformation matrix for vertex texture coordinate 3 * 3

vertex is hashed and cached for better performance Return vertex hash for later use in Self::add_vertex_hash

pub fn add_obj( &mut self, filename: &Path, transform_v: ArrayBase<OwnedRepr<f32>, Dim<[usize; 2]>>, transform_vt: ArrayBase<OwnedRepr<f32>, Dim<[usize; 2]>>, data_cache: &Arc<Mutex<HashMap<Hash, (i64, Data)>>>, ) -> Result<Hash, Error>

Load Wavefront .obj trimesh to Geometry

Arguments

• filename - Wavefront .obj file path
• transform_v - Homogeneous transformation matrix for vertex coordinate 4 * 4
• transform_vt - Homogeneous transformation matrix for vertex texture coordinate 3 * 3

vertex is hashed and cached for better performance Return vertex hash for later use in add_vertex_hash

pub fn combine( &self, data_cache: &Arc<Mutex<HashMap<Hash, (i64, Data)>>>, ) -> Result<ArrayBase<OwnedRepr<f32>, Dim<[usize; 3]>>, Error>

Apply transform and combine all trimeshes

pub fn uv_xyz_cached( &self, texture_resolution: usize, padding: usize, data_cache: &Arc<Mutex<HashMap<Hash, (i64, Data)>>>, ) -> Result<ArrayBase<OwnedRepr<f32>, Dim<[usize; 3]>>, Error>

Calculate uv_xyz of the combined geometry and cache the result

Trait Implementations

impl Clone for Geometry

fn clone(&self) -> Geometry

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Geometry

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

Formats the value using the given formatter.

impl Default for Geometry

fn default() -> Geometry

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Geometry

fn deserialize<__D>( __deserializer: __D, ) -> Result<Geometry, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Geometry

fn eq(&self, other: &Geometry) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Geometry

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Geometry