import { MethodBase, _Shader_MethodBase } from './MethodBase';
/**
 * EffectFogMethod provides a method to add distance-based fog to a material.
 */
export declare class EffectFogMethod extends MethodBase {
    private _minDistance;
    private _maxDistance;
    private _fogColor;
    static assetType: string;
    /**
     * @inheritDoc
     */
    get assetType(): string;
    /**
     * The distance from which the fog starts appearing.
     */
    get minDistance(): number;
    set minDistance(value: number);
    /**
     * The distance at which the fog is densest.
     */
    get maxDistance(): number;
    set maxDistance(value: number);
    /**
     * The colour of the fog.
     */
    get fogColor(): number;
    set fogColor(value: number);
    /**
     * Creates a new EffectFogMethod object.
     * @param minDistance The distance from which the fog starts appearing.
     * @param maxDistance The distance at which the fog is densest.
     * @param fogColor The colour of the fog.
     */
    constructor(minDistance?: number, maxDistance?: number, fogColor?: number);
}
import { ShaderRegisterCache, ShaderRegisterData, ShaderRegisterElement } from '@awayjs/stage';
import { ShaderBase, ChunkVO } from '@awayjs/renderer';
/**
 * _Shader_EffectFogMethod provides a method to add distance-based fog to a material.
 */
export declare class _Shader_EffectFogMethod extends _Shader_MethodBase {
    private _method;
    private _shader;
    private _fogColorIndex;
    /**
     * Creates a new EffectEnvMapChunk.
     */
    init(method: EffectFogMethod, shader: ShaderBase): void;
    /**
     * @inheritDoc
     */
    _initVO(chunkVO: ChunkVO): void;
    /**
     * @inheritDoc
     */
    _activate(): void;
    /**
     * @inheritDoc
     */
    _getFragmentCode(targetReg: ShaderRegisterElement, registerCache: ShaderRegisterCache, sharedRegisters: ShaderRegisterData): string;
}
//# sourceMappingURL=EffectFogMethod.d.ts.map