import { CanonicalMaterial } from "../core/canonical_material.js";
import IfcStepModel from "./ifc_step_model.js";
import StepEntityBase from "../step/step_entity_base.js";
import EntityTypesIfc from "./ifc4_gen/entity_types_ifc.gen.js";
import { ModelMaterials } from "../core/model_materials.js";
import { SceneNodeGeometry } from "../core/scene_node.js";
/**
 * Cache of materials via their local ID
 */
export declare class IfcMaterialCache implements ModelMaterials {
    readonly model: IfcStepModel;
    readonly isVoid: boolean;
    private readonly cache_;
    private readonly assignments_;
    readonly relMaterialsMap: Map<number, number>;
    readonly materialDefinitionsMap: Map<number, number>;
    readonly styledItemMap: Map<number, number>;
    /**
     * Construct this with an IFC step model.
     *
     * @param model The model this is from
     * @param isVoid
     */
    constructor(model: IfcStepModel, isVoid?: boolean);
    /**
     * If there is a material for a whole element, this is used to
     * add a default material to that item.
     */
    defaultMaterialLocalID: number | undefined;
    /**
     * Get the number of materials in this.
     *
     * @return {number} The number of materials in this.
     */
    get size(): number;
    /**
     * Get the materials in the cache.
     *
     * @return {IterableIterator} The iterator for the
     * local IDs and their respective materials.
     */
    [Symbol.iterator](): IterableIterator<[
        number,
        CanonicalMaterial
    ]>;
    /**
     * Get the materials in the cache (values only).
     *
     * @return {IterableIterator} The iterator for the respective
     * materials.
     */
    materials(): IterableIterator<CanonicalMaterial>;
    /**
     * Add a material to the cache
     *
     * @param localID The local ID of the source material object
     * @param material The canonical material version of the material to add
     */
    add(localID: number, material: CanonicalMaterial): void;
    /**
     * Get a material by its local ID.
     *
     * @param localID The local ID to fetch a material for.
     * @return {CanonicalMaterial | undefined} The material for the matching local ID
     */
    get(localID: number): CanonicalMaterial | undefined;
    /**
     * Get the material matching a geometry node.
     *
     * @param node The geometry node to match a material for.
     * @return {CanonicalMaterial | undefined} A material, or undefined if it is not found.
     */
    getMaterialFromGeometryNode(node: SceneNodeGeometry): CanonicalMaterial | undefined;
    /**
     * Get a material by its local ID.
     *
     * @param geometryLocalID The local ID of the geometry to fetch
     * @return {number | undefined} A tuple containing the
     * material and its id, or undefined if it is not found.
     */
    getMaterialIDByGeometryID(geometryLocalID: number): number | undefined;
    /**
     * Assign a particular geometry to a particular material
     *
     * @param geometryLocalID The geometry
     * @param materialLocalID The material
     */
    addGeometryMapping(geometryLocalID: number, materialLocalID: number): void;
    /**
     * Map the current geometry to the current default material, if one is set.
     *
     * @param geometryLocalID The geometry ID to add.
     */
    addDefaultGeometryMapping(geometryLocalID: number): void;
    /**
     * Get a material by its local geometry ID.
     *
     * @param geometryLocalID The local ID of the geometry to get the associated
     * material for.
     * @return {[CanonicalMaterial, number] | undefined} A tuple containing the
     * material and its id, or undefined if it is not found.
     */
    getMaterialByGeometryID(geometryLocalID: number): [
        CanonicalMaterial,
        number
    ] | undefined;
    /**
     * Get the OBJs for all the curves in the cache (lazily)
     *
     * @yields {[StepEntityBase, string]} Curves with their matching OBJ as a string
     */
    mtls(): IterableIterator<[
        StepEntityBase<EntityTypesIfc>,
        string
    ]>;
}
//# sourceMappingURL=ifc_material_cache.d.ts.map