import { CanonicalMesh } from "../core/canonical_mesh.js";
import { ModelGeometry } from "../core/model.js";
import IfcStepModel from "./ifc_step_model.js";
import { IfcGeometricRepresentationItem } from "./ifc4_gen/index.js";
import { CanonicalMaterial } from "../core/canonical_material.js";
/**
 * Geometry for an IFC model.
 */
export declare class IfcModelGeometry implements ModelGeometry {
    readonly model: IfcStepModel;
    readonly isVoid: boolean;
    private readonly meshes_;
    /**
     * Construct this with an IFC step model.
     *
     * @param model The model this is from
     * @param isVoid
     */
    constructor(model: IfcStepModel, isVoid?: boolean);
    /**
     * Get the number of items in this.
     *
     * @return {number}
     */
    get length(): number;
    /**
     * Delete the temporaries from this.
     */
    deleteTemporaries(): void;
    /**
     * Add a mesh to the geometry cache.
     *
     * @param mesh
     */
    add(mesh: CanonicalMesh): void;
    /**
     * Drop the mesh for a particular local ID
     *
     * @param localID The local ID of the item to delete.
     */
    delete(localID: number): void;
    /**
     * Get an mesh by its matching local ID.
     *
     * @param localID
     * @return {CanonicalMesh | undefined}
     */
    getByLocalID(localID: number): CanonicalMesh | undefined;
    /**
     * Allows iteration through this.
     *
     * @return {IterableIterator}
     */
    [Symbol.iterator](): IterableIterator<CanonicalMesh>;
    /**
     * Calculate the size of the geometry data in this.
     *
     * @return {number} - size of the geometry data
     */
    calculateGeometrySize(): number;
    /**
     * Get the OBJs for all the curves in the cache (lazily)
     *
     * @yields {[IfcGeometricRepresentationItem, string]} Curves with their matching OBJ as a string
     */
    objs(): IterableIterator<[
        IfcGeometricRepresentationItem,
        string,
        CanonicalMaterial,
        string
    ] | [
        IfcGeometricRepresentationItem,
        string,
        undefined,
        undefined
    ]>;
}
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