IFClite TypeScript API
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    Interface DrawingLine2D

    interface DrawingLine2D {
        category: string;
        line: { end: { x: number; y: number }; start: { x: number; y: number } };
        ownerId?: number;
    }
    Index
    category line ownerId?
    category: string
    line: { end: { x: number; y: number }; start: { x: number; y: number } }
    ownerId?: number

    Express ID of the entity that authored this segment. Optional — only the IfcAnnotation / IfcGridAxis symbolic overlay sets it (so per-entity hide can drop an annotation's curves without a mesh). The section-cut and drawing-2d cutters leave it undefined.

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