import type { Count, Index, VectorComponentN } from '../../types/CommonTypes';
import { EnumClass, type EnumIO } from '../misc/EnumIO';
type ComponentChar = 'X' | 'Y' | 'Z' | 'W';
export type VertexAttributeTypeName = 'UNKNOWN' | 'POSITION' | 'NORMAL' | 'TANGENT' | 'TEXCOORD_0' | 'TEXCOORD_1' | 'TEXCOORD_2' | 'COLOR_0' | 'JOINTS_0' | 'WEIGHTS_0' | 'INSTANCE' | 'FACE_NORMAL' | 'BARY_CENTRIC_COORD';
export type VertexAttributeComponent = `${VertexAttributeTypeName}.${ComponentChar}`;
export type VertexAttributeSemanticsJoinedString = `${string}.${ComponentChar}` | `${string}.${ComponentChar},${string}.${ComponentChar}` | `${string}.${ComponentChar},${string}.${ComponentChar},${string}.${ComponentChar}` | `${string}.${ComponentChar},${string}.${ComponentChar},${string}.${ComponentChar},${string}.${ComponentChar}`;
export interface VertexAttributeEnum extends EnumIO {
    getAttributeSlot(): Index;
    shaderStr: string;
    /** Whether this attribute is an integer type (uvec4, ivec4, etc.) in shader */
    isIntegerType: boolean;
    X: VertexAttributeComponent;
    Y: VertexAttributeComponent;
    Z: VertexAttributeComponent;
    W: VertexAttributeComponent;
    XY: VertexAttributeSemanticsJoinedString;
    XYZ: VertexAttributeSemanticsJoinedString;
    XYZW: VertexAttributeSemanticsJoinedString;
}
type VertexAttributeDescriptor = {
    str: VertexAttributeTypeName;
    shaderStr: string;
    attributeSlot: Index;
    gltfComponentN: Count;
    /** Whether this attribute is an integer type (uvec4, ivec4, etc.) in shader */
    isIntegerType?: boolean;
};
export declare class VertexAttributeClass extends EnumClass implements VertexAttributeEnum {
    private static __indexCount;
    private __attributeSlot;
    private __shaderStr;
    private __gltfComponentN;
    private __isIntegerType;
    private constructor();
    getAttributeSlot(): Index;
    get shaderStr(): string;
    get isIntegerType(): boolean;
    get attributeTypeName(): VertexAttributeTypeName;
    _setShaderStr(str: string): void;
    get X(): VertexAttributeComponent;
    get Y(): VertexAttributeComponent;
    get Z(): VertexAttributeComponent;
    get W(): VertexAttributeComponent;
    get XY(): VertexAttributeSemanticsJoinedString;
    get XYZ(): VertexAttributeSemanticsJoinedString;
    get XYZW(): VertexAttributeSemanticsJoinedString;
    getVertexAttributeComponentsAsGltf(): VertexAttributeSemanticsJoinedString;
    static __createVertexAttributeClass(desc: VertexAttributeDescriptor): VertexAttributeClass;
}
declare const Position: VertexAttributeEnum;
declare const Normal: VertexAttributeEnum;
declare const Tangent: VertexAttributeEnum;
declare const Texcoord0: VertexAttributeEnum;
declare const Texcoord1: VertexAttributeEnum;
declare const Color0: VertexAttributeEnum;
declare const Joints0: VertexAttributeEnum;
declare const Weights0: VertexAttributeEnum;
declare function isInstanceOfVertexAttributeClass(obj: unknown): obj is VertexAttributeClass;
declare function from(index: number): VertexAttributeEnum;
declare function fromString(str: string): VertexAttributeEnum;
type Gltf2VertexAttributeEnums = typeof Position | typeof Color0 | typeof Normal | typeof Tangent | typeof Texcoord0 | typeof Texcoord1 | typeof Joints0 | typeof Weights0;
declare function toVertexAttributeSemanticJoinedStringAsGltfStyle(attribute: Gltf2VertexAttributeEnums): VertexAttributeSemanticsJoinedString;
declare function toAttributeSlotFromJoinedString(str: VertexAttributeSemanticsJoinedString): Index;
declare function toVectorComponentN(joinedString: VertexAttributeSemanticsJoinedString): VectorComponentN;
export declare const VertexAttribute: Readonly<{
    Unknown: VertexAttributeEnum;
    Position: VertexAttributeEnum;
    Normal: VertexAttributeEnum;
    Tangent: VertexAttributeEnum;
    Texcoord0: VertexAttributeEnum;
    Texcoord1: VertexAttributeEnum;
    Color0: VertexAttributeEnum;
    Joints0: VertexAttributeEnum;
    Weights0: VertexAttributeEnum;
    Instance: VertexAttributeEnum;
    FaceNormal: VertexAttributeEnum;
    BaryCentricCoord: VertexAttributeEnum;
    AttributeTypeNumber: number;
    integerTypeAttributes: VertexAttributeEnum[];
    isInstanceOfVertexAttributeClass: typeof isInstanceOfVertexAttributeClass;
    toVertexAttributeSemanticJoinedStringAsGltfStyle: typeof toVertexAttributeSemanticJoinedStringAsGltfStyle;
    toAttributeSlotFromJoinedString: typeof toAttributeSlotFromJoinedString;
    toVectorComponentN: typeof toVectorComponentN;
    from: typeof from;
    fromString: typeof fromString;
}>;
export {};