Struct RawInstanceOccurrence 

pub struct RawInstanceOccurrence {
    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 rep_identity: u128,
    pub world_transform: [f64; 16],
}

#1623 Phase 2 “don’t-bake”: a non-template occurrence of a shared IfcRepresentationMap that skipped the per-occurrence vertex materialize. The router emits an instance-only placeholder (empty geometry carrying InstanceMeta); [crate::element::emit_sub_meshes] turns it into one of these, and the streaming finalize resolves it against the template MeshData into an InstanceRecord. Purely in-memory (recomputed each load), never serialized.

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 resolved RGBA colour.

rep_identity: u128

Shared-template key = the IfcRepresentationMap express id. Matches the template MeshData’s instance.rep_identity.

world_transform: [f64; 16]

PRE-RTC composed world transform (row-major) transform · local · canonical — the same composition collate_refs computes for a baked occurrence, but captured WITHOUT materializing vertices. The finalize reduces it to the post-RTC frame and derives the template-relative InstanceRecord.transform.

Trait Implementations

impl Clone for RawInstanceOccurrence

fn clone(&self) -> RawInstanceOccurrence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RawInstanceOccurrence

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

Formats the value using the given formatter.