Struct InstanceRecord 

pub struct InstanceRecord {
    pub express_id: u32,
    pub ifc_type: String,
    pub global_id: Option<String>,
    pub name: Option<String>,
    pub presentation_layer: Option<String>,
    pub color: [f32; 4],
    pub template_express_id: u32,
    pub rep_identity: u128,
    pub transform: [f32; 16],
}

#1623 Phase 2: one resolved occurrence of a shared template geometry, emitted in crate::ProcessingResult::instances instead of a full materialized mesh when StreamingOptions.enable_instancing is set. The consumer uploads the template MeshData (template_express_id, still in meshes) once and draws this occurrence by applying transform to the template’s baked world geometry. Purely in-memory, like MeshData::instance — recomputed fresh each load, never round-trips a cache.

Fields

express_id: u32

This occurrence’s IFC element id.

ifc_type: String

IFC type name (e.g. “IfcFlowFitting”).

global_id: Option<String>

IFC GlobalId when available.

name: Option<String>

IFC Name when available.

presentation_layer: Option<String>

IFC presentation layer assignment name when available.

color: [f32; 4]

This occurrence’s RGBA colour (may differ from the template occurrence’s).

template_express_id: u32

express_id of the template MeshData this occurrence instantiates — the consumer’s link from record to the geometry it draws (JS-safe u32).

rep_identity: u128

Representation-identity of the shared geometry (IfcRepresentationMap id).

transform: [f32; 16]

Row-major, TEMPLATE-RELATIVE mat4: applied to the template’s baked world geometry (template.origin + positions) it yields this occurrence’s world geometry (rel_k = post_rtc(M_k) · post_rtc(M_ref)⁻¹).

Trait Implementations

impl Clone for InstanceRecord

fn clone(&self) -> InstanceRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InstanceRecord

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

Formats the value using the given formatter.