import { GpuShaderDefinition } from '../../gpu/porters';
import { transformColor, transformPosition } from '../../utilities/transformations';
import { ColorStop } from '../../utilities/colorStops';

export type { ColorStop };
export interface ComponentProps {
    /**
     * The starting color at the center of the gradient
     *
     * Accepts hex strings (`#ff0000`), RGB objects (`{ r, g, b }`), or CSS color names (`limegreen`).
     * @default "#ff0000"
     */
    colorA: Parameters<typeof transformColor>[0];
    /**
     * The ending color at the edge of the gradient
     *
     * Accepts hex strings (`#ff0000`), RGB objects (`{ r, g, b }`), or CSS color names (`limegreen`).
     * @default "#0000ff"
     */
    colorB: Parameters<typeof transformColor>[0];
    stops: ColorStop[] | null;
    /**
     * The center point of the radial gradient
     *
     * Accepts `{ x, y }` objects with values from 0 to 1, or CSS positions like `top center`.
     * @default {"x":0.5,"y":0.5}
     */
    center: Parameters<typeof transformPosition>[0];
    /**
     * The radius of the gradient (normalized, 0.0-1.0)
     *
     * @default 1
     */
    radius: number;
    /**
     * Number of times the gradient repeats. Values above 1 create concentric rings.
     *
     * @default 1
     */
    repeat: number;
    /**
     * Stretches the gradient into an ellipse. Values below 1 compress vertically, above 1 compress horizontally.
     *
     * @default 1
     */
    aspect: number;
    /**
     * Rotates the ellipse axis in degrees. Only visible when Aspect is not 1.
     *
     * @default 0
     */
    skewAngle: number;
    /**
     * Color space for color interpolation
     *
     * Accepts one of the predefined option values.
     * @default "linear"
     */
    colorSpace: string;
}
export declare const componentDefinition: GpuShaderDefinition<ComponentProps>;
export default componentDefinition;
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