import { Color, Material, Vector3 } from "@galacean/engine";
export declare class PlanarShadowShaderFactory {
    private static _lightDirProp;
    private static _planarHeightProp;
    private static _shadowColorProp;
    private static _shadowFalloffProp;
    /**
     * Replace material Shader and initialization。
     * @param material - Material to replace and initialization。
     */
    static replaceShader(material: Material): void;
    /**
     * Set planar height.
     */
    static setPlanarHeight(material: Material, value: number): void;
    /**
     * Set light direction.
     */
    static setLightDirection(material: Material, value: Vector3): void;
    /**
     * Set shadow color
     */
    static setShadowColor(material: Material, value: Color): void;
    /**
     * Set Shadow falloff coefficient
     */
    static setShadowFalloff(material: Material, value: number): void;
}