import type { GradientColorValue, vec4 } from '@predy-js/specification';
export type color = vec4;
export interface ColorStop {
    stop: number;
    color: color;
}
export declare function imageDataFromColor(color: vec4): {
    width: number;
    height: number;
    data: Uint8Array;
};
export declare function colorStopsFromGradient(gradient: Array<number[]>): ColorStop[];
export declare function getColorFromGradientStops(out: vec4, stops: ColorStop[], key: number): color;
export declare function imageDataFromGradient(gradient: GradientColorValue): {
    width: number;
    height: number;
    data: Uint8Array;
};
export declare function interpolateColor(out: vec4, a: color, b: color, s: number): color;
export declare function parsePercent(c: any): number;