import { TextureBase } from '@awayjs/renderer';
import { NormalBasicMethod, _Shader_NormalBasicMethod } from './NormalBasicMethod';
import { MethodBase } from './MethodBase';
/**
 * NormalHeightMapMethod provides a normal map method that uses a height map to calculate the normals.
 */
export declare class NormalHeightMapMethod extends NormalBasicMethod {
    private _worldXYRatio;
    private _worldXZRatio;
    static assetType: string;
    /**
     * @inheritDoc
     */
    get assetType(): string;
    get worldXYRatio(): number;
    get worldXZRatio(): number;
    /**
     * Creates a new NormalHeightMapMethod method.
     *
     * @param heightMap The texture containing the height data. 0 means low, 1 means high.
     * @param worldWidth The width of the 'world'. This is used to map uv coordinates' u component to scene dimensions.
     * @param worldHeight The height of the 'world'. This is used to map the height map values to scene dimensions.
     * @param worldDepth The depth of the 'world'. This is used to map uv coordinates' v component to scene dimensions.
     */
    constructor(heightMap: TextureBase, worldWidth: number, worldHeight: number, worldDepth: number);
    /**
     * @inheritDoc
     */
    copyFrom(method: MethodBase): void;
}
import { ShaderRegisterCache, ShaderRegisterData, ShaderRegisterElement } from '@awayjs/stage';
import { ShaderBase } from '@awayjs/renderer';
/**
 * _Shader_NormalHeightMapMethod provides a normal map method that uses a height map to calculate the normals.
 */
export declare class _Shader_NormalHeightMapMethod extends _Shader_NormalBasicMethod {
    private _fragmentConstantsIndex;
    /**
     * Creates a new _Shader_NormalHeightMapMethod.
     */
    init(method: NormalHeightMapMethod, shader: ShaderBase): void;
    /**
     * @inheritDoc
     */
    _initConstants(): void;
    /**
     * @inheritDoc
     */
    get tangentSpace(): boolean;
    /**
     * @inheritDoc
     */
    _getFragmentCode(targetReg: ShaderRegisterElement, registerCache: ShaderRegisterCache, sharedRegisters: ShaderRegisterData): string;
}
//# sourceMappingURL=NormalHeightMapMethod.d.ts.map