import { ConstructorProps, ContextManager, Observable } from '@zcomponent/core';
import * as THREE from 'three';
import { Material } from './Material';
/**
 * This material can receive shadows, but otherwise is completely transparent.
 *
 * Root element: [THREE.ShadowMaterial](https://threejs.org/docs/index.html#api/en/materials/ShadowMaterial)
 * @zcomponent
 * @zgroup Materials
 * @zicon material
 * @ztag three/Material/Mesh/MeshShadowMaterial
 * @zparents three/Object3D/Mesh/**
 * @zparents three/Object3D/GLTF
 * @zparents three/Object3D/Group/**
 */
export declare class MeshShadowMaterial extends Material {
    element: THREE.ShadowMaterial;
    /**
     * Constructs a new shadow material.
     * @param contextManager - Context manager.
     * @param props - Properties.
     */
    constructor(contextManager: ContextManager, props: ConstructorProps);
    /**
     * Color of the material, by default set to black.
     * @zprop
     * @zgroup MeshShadowMaterial
     * @zgrouppriority 20
     * @ztype color-norm-rgb-linear
     * @zdefault [0, 0, 0]
     */
    color: Observable<[number, number, number], never>;
    /**
     * Weather the material is affected by fog.
     * @zprop
     * @zgroup MeshShadowMaterial
     * @zgrouppriority 20
     * @zdefault true
     */
    fog: Observable<boolean, never>;
    /**
     * Defines whether this material is transparent.
     * @zprop
     * @zgroup Material
     * @zgrouppriority 10
     * @zdefault true
     */
    transparent: Observable<boolean, never>;
}