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

export type { ColorStop };
export interface ComponentProps {
    /**
     * Color of fresh smoke
     *
     * Accepts hex strings (`#ff0000`), RGB objects (`{ r, g, b }`), or CSS color names (`limegreen`).
     * @default "#fc83f9"
     */
    colorA: Parameters<typeof transformColor>[0];
    /**
     * Color smoke transitions to as it ages
     *
     * Accepts hex strings (`#ff0000`), RGB objects (`{ r, g, b }`), or CSS color names (`limegreen`).
     * @default "#c21c79"
     */
    colorB: Parameters<typeof transformColor>[0];
    stops: ColorStop[] | null;
    /**
     * The emission source point
     *
     * Accepts `{ x, y }` objects with values from 0 to 1, or CSS positions like `top center`.
     * @default {"x":0.5,"y":1}
     */
    emitFrom: Parameters<typeof transformPosition>[0];
    /**
     * Emission direction (0 = up, 90 = right, 180 = down, 270 = left)
     *
     * Accepts a number between 0 and 360.
     * @default 0
     */
    direction: number;
    /**
     * Emission velocity strength
     *
     * Accepts a number between 0.1 and 50.
     * @default 20
     */
    speed: number;
    /**
     * Emission cone angle in degrees
     *
     * Accepts a number between 0 and 180.
     * @default 60
     */
    spread: number;
    /**
     * Size of the emission area
     *
     * Accepts a number between 0.01 and 0.3.
     * @default 0.08
     */
    emitRadius: number;
    /**
     * Smoke emission density
     *
     * Accepts a number between 0.1 and 1.
     * @default 1
     */
    intensity: number;
    /**
     * How fast smoke fades over time
     *
     * Accepts a number between 0.1 and 3.
     * @default 0.2
     */
    dissipation: number;
    /**
     * Fine-scale swirling detail
     *
     * Accepts a number between 0 and 50.
     * @default 25
     */
    detail: number;
    /**
     * Downward gravitational pull on smoke
     *
     * Accepts a number between -2 and 2.
     * @default 0.5
     */
    gravity: number;
    /**
     * How quickly smoke shifts from Color A to Color B
     *
     * Accepts a number between 0 and 3.
     * @default 0.4
     */
    colorDecay: number;
    /**
     * Strength of cursor influence
     *
     * Accepts a number between 0 and 2.
     * @default 0.1
     */
    mouseInfluence: number;
    /**
     * Radius of cursor influence area
     *
     * Accepts a number between 0.02 and 0.5.
     * @default 0.1
     */
    mouseRadius: number;
    /**
     * Color space for color interpolation
     *
     * Accepts one of the predefined option values.
     * @default "linear"
     */
    colorSpace: string;
}
export declare const splatKernel: import('typegpu').TgpuFn<(cx: d.U32, cy: d.U32) => d.Void>;
export declare const curlKernel: (cx: number, cy: number) => void, vorticityKernel: (cx: number, cy: number) => void, divergenceKernel: (cx: number, cy: number) => void, jacobiKernel: (cx: number, cy: number) => void, gradSubtractKernel: (cx: number, cy: number) => void, advectVelKernel: (cx: number, cy: number) => void, copyVelKernel: (cx: number, cy: number) => void, advectDensKernel: ((cx: number, cy: number) => void) | undefined, copyDensKernel: ((cx: number, cy: number) => void) | undefined;
export declare const outputKernel: import('typegpu').TgpuFn<(cx: d.U32, cy: d.U32) => d.Void>;
export declare const componentDefinition: GpuShaderDefinition<ComponentProps>;
export default componentDefinition;
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