import { Mesh, IcosahedronGeometry, ShaderMaterial, Texture, IUniform, BufferGeometry, Material } from 'three';
import { IUniformN, IUniformTexture } from '../../../../engine/nodes/utils/code/gl/Uniforms';
/**
 * Ground projected env map adapted from @react-three/drei.
 * https://github.com/pmndrs/drei/blob/master/src/core/Environment.tsx
 * and
 * https://github.com/mrdoob/three.js/blob/master/examples/webgl_materials_envmaps_groundprojected.html
 */
type ShaderMaterialUniform = {
    [uniform: string]: IUniform;
};
interface GroundProjectedSkyboxMaterialUniforms extends ShaderMaterialUniform {
    map: IUniformTexture;
    height: IUniformN;
    radius: IUniformN;
}
interface GroundProjectedSkyboxMaterial extends ShaderMaterial {
    uniforms: GroundProjectedSkyboxMaterialUniforms;
}
export declare class GroundProjectedSkybox extends Mesh {
    material: GroundProjectedSkyboxMaterial;
    geometry: IcosahedronGeometry;
    constructor(geometry?: BufferGeometry, material?: Material);
    setTexture(texture: Texture): void;
    set radius(radius: number);
    get radius(): number;
    set height(height: number);
    get height(): number;
    copy(source: this, recursive: boolean): this;
}
export {};