export type PaperTextureFit = 'none' | 'contain' | 'cover';
/**
 * Literal parameters forwarded to Paper Design's paper texture shader.
 * Colors intentionally remain ordinary CSS color strings; they are not token
 * references and are parsed once into shader RGBA uniforms.
 */
export interface PaperTextureConfig {
    image?: HTMLImageElement | string;
    colorFront?: string;
    colorBack?: string;
    contrast?: number;
    roughness?: number;
    fiber?: number;
    fiberSize?: number;
    crumples?: number;
    crumpleSize?: number;
    folds?: number;
    foldCount?: number;
    fade?: number;
    drops?: number;
    seed?: number;
    fit?: PaperTextureFit;
    scale?: number;
    rotation?: number;
    originX?: number;
    originY?: number;
    offsetX?: number;
    offsetY?: number;
    worldWidth?: number;
    worldHeight?: number;
    speed?: number;
    frame?: number;
    minPixelRatio?: number;
    maxPixelCount?: number;
    /** CSS opacity applied after the shader has rendered. */
    opacity?: number;
}
export declare const DEFAULT_PAPER_TEXTURE_CONFIG: Required<Omit<PaperTextureConfig, 'image'>>;
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