IFClite TypeScript API
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    Interface SymbolicPolyline

    A 2D polyline (IfcPolyline, IfcIndexedPolyCurve, tessellated ellipses, trimmed-curve arcs, grid axis lines).

    interface SymbolicPolyline {
        closed: boolean;
        express_id: number;
        ifc_type: string;
        points: number[];
        representation: string;
        world_y: number | null;
    }
    Index
    closed: boolean
    express_id: number
    ifc_type: string
    points: number[]

    Flat [x0, y0, x1, y1, …] plan-view coordinates.

    representation: string
    world_y: number | null

    World-Y elevation in metres, or null when unresolved. See the "UNRESOLVED SCALARS" note at the top of this section — null is not 0.