Struct MeshData 

pub struct MeshData {

    pub express_id: u32,
    pub ifc_type: String,
    pub global_id: Option<String>,
    pub name: Option<String>,
    pub presentation_layer: Option<String>,
    pub positions: Vec<f32>,
    pub normals: Vec<f32>,
    pub indices: Vec<u32>,
    pub color: [f32; 4],
    pub material_name: Option<String>,
    pub geometry_item_id: Option<u32>,
    pub properties: Option<BTreeMap<String, String>>,
    pub uvs: Option<Vec<f32>>,
    pub texture: Option<MeshTextureData>,
    pub geometry_class: u8,
    pub origin: [f64; 3],
}

Individual mesh data with geometry and metadata.

Fields

express_id: u32

Express ID of the IFC element.

ifc_type: String

IFC type name (e.g., “IfcWall”).

global_id: Option<String>

IFC GlobalId (Root attribute #0) when available.

name: Option<String>

IFC Name (Root/Object attribute #2) when available.

presentation_layer: Option<String>

IFC presentation layer assignment name when available.

positions: Vec<f32>

Vertex positions (x, y, z triplets).

normals: Vec<f32>

Vertex normals (x, y, z triplets).

indices: Vec<u32>

Triangle indices.

color: [f32; 4]

RGBA color [r, g, b, a] in 0-1 range.

material_name: Option<String>

Optional material/style name resolved from per-item IFC styling.

geometry_item_id: Option<u32>

Optional source geometry item id for submesh outputs.

properties: Option<BTreeMap<String, String>>

Optional IFC property set values keyed by IFC property names. Primarily attached for IfcSpace/IfcZone so downstream tools can build room attribute UIs.

uvs: Option<Vec<f32>>

Per-vertex texture coordinates (u, v pairs, 1:1 with positions), present only for textured meshes (issue #961).

texture: Option<MeshTextureData>

Decoded surface texture, present only for textured meshes (#961).

geometry_class: u8

Provenance of the geometry for the viewer’s Model/Types switch (#957): 0 = ordinary occurrence, 1 = orphan type-product RepresentationMap (no occurrence instantiates it), 2 = instanced type-product map (the type library shape; its occurrences already draw the real geometry). Serde-default so existing JSON payloads and disk caches stay readable; skipped when 0 so ordinary meshes serialize byte-identically.

origin: [f64; 3]

Per-mesh local origin (world/RTC frame, f64). positions are stored RELATIVE to this — the world position of a vertex is origin + position — so building/georef-scale placement never collapses adjacent vertices to bit-identical f32. The renderer applies it as a per-mesh translation (camera-relative). [0, 0, 0] ⇒ positions are absolute (legacy/local). Serde-default + skip-when-zero so existing payloads/caches stay readable and local meshes serialize byte-identically.

Implementations

impl MeshData

pub fn new( express_id: u32, ifc_type: String, positions: Vec<f32>, normals: Vec<f32>, indices: Vec<u32>, color: [f32; 4], ) -> Self

Create a new MeshData from geometry components.

pub fn with_geometry_class(self, geometry_class: u8) -> Self

Tag the geometry’s provenance for the Model/Types view switch (#957).

pub fn with_origin(self, origin: [f64; 3]) -> Self

Set the per-mesh local origin (positions are relative to it).

pub fn with_texture(self, uvs: Vec<f32>, texture: MeshTextureData) -> Self

Attach per-vertex UVs + a decoded surface texture (issue #961). uvs must be 1:1 with positions (2 floats per vertex).

pub fn with_element_metadata( self, global_id: Option<String>, name: Option<String>, presentation_layer: Option<String>, ) -> Self

Set element-level IFC metadata.

pub fn with_style_metadata( self, material_name: Option<String>, geometry_item_id: Option<u32>, ) -> Self

Set material name and source geometry item id metadata.

pub fn with_properties( self, properties: Option<BTreeMap<String, String>>, ) -> Self

Attach optional IFC property set values.

pub fn vertex_count(&self) -> usize

Get the number of vertices.

pub fn triangle_count(&self) -> usize

Get the number of triangles.

pub fn is_empty(&self) -> bool

Check if the mesh is empty.

Trait Implementations

impl Clone for MeshData

fn clone(&self) -> MeshData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MeshData

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MeshData

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for MeshData

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

where __S: Serializer,

Serialize this value into the given Serde serializer.