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

/** Momentum stamp: the general dye-less Gaussian velocity impulse over this fluid's layout. */
export declare const particleFlowForceKernel: import('typegpu').TgpuFn<(cx: d.U32, cy: d.U32) => d.Void>;
export declare const particleFlowCurlKernel: (cx: number, cy: number) => void, particleFlowDivergenceKernel: (cx: number, cy: number) => void, particleFlowJacobiKernel: (cx: number, cy: number) => void, particleFlowGradSubtractKernel: (cx: number, cy: number) => void, particleFlowAdvectVelKernel: (cx: number, cy: number) => void, particleFlowCopyVelKernel: (cx: number, cy: number) => void;
export declare const particleFlowVorticityKernel: (cx: number, cy: number) => void;
/** Uniform-scatter spawn (the general agents part): even coverage, at rest. */
export declare const particleFlowInitKernel: import('typegpu').TgpuFn<(i: d.U32) => d.Void>;
/**
 * Advect one particle: the advection-family integrator — bilinear-sample the fluid velocity at
 * the particle's screen-uv, convert grid velocity to world units, ease toward it (inertia →
 * massy drift), add the weak R2 home-spring, integrate, and clamp to the domain (the field is
 * wall-tangential, so the clamp almost never engages — the spring does the real edge recovery).
 */
export declare const particleFlowIntegrateKernel: (i: number) => void;
export declare const makeParticleFlowSplatKernel: (shape: string) => (i: number) => void;
export declare const makeParticleFlowResolveKernel: (mode: number, trailsOn: boolean) => (x: number, y: number) => void;
export declare const particleFlowSplatKernel: (i: number) => void;
export declare const particleFlowResolveKernel: (x: number, y: number) => void;
export interface ComponentProps {
    /**
     * Number of drifting particles
     *
     * Accepts a number between 1000 and 16000.
     * @default 6000
     */
    count: number;
    /**
     * How hard the cursor
     *
     * Accepts a number between 0 and 3.
     * @default 1
     */
    force: number;
    /**
     * Vorticity confinement — swirl energy that spins the flow into persistent eddies and vortices the dust orbits
     *
     * Accepts a number between 0 and 60.
     * @default 25
     */
    swirl: number;
    /**
     * How long the fluid keeps flowing after you stop dragging — high momentum lets the eddies carry the dust on and on
     *
     * Accepts a number between 0 and 1.
     * @default 0.6
     */
    momentum: number;
    /**
     * A gentle, ever-evolving breeze that keeps the dust drifting even without the cursor — set to 0 for a field that only moves when you stir it
     *
     * Accepts a number between 0 and 1.
     * @default 0.15
     */
    ambient: number;
    /**
     * How strongly the fluid carries the particles — higher makes the dust ride the flow faster
     *
     * Accepts a number between 0.2 and 3.
     * @default 1
     */
    speed: number;
    /**
     * What each particle is drawn as — a streak or arrow that stretches along the flow, a plain dot, a square, or a soft glowing comet
     *
     * Accepts one of the predefined option values.
     * @default "streak"
     */
    shape: string;
    /**
     * Size of each particle
     *
     * Accepts a number between 0.3 and 3.
     * @default 1.2
     */
    size: number;
    /**
     * How long each particle
     *
     * Accepts a number between 0 and 1.
     * @default 0
     */
    trails: number;
    /**
     * Color of particles drifting slowly with the flow
     *
     * Accepts hex strings (`#ff0000`), RGB objects (`{ r, g, b }`), or CSS color names (`limegreen`).
     * @default "#8ec5ff"
     */
    colorA: Parameters<typeof transformColor>[0];
    /**
     * Color particles flash toward as they speed up in the fast jets and wakes
     *
     * Accepts hex strings (`#ff0000`), RGB objects (`{ r, g, b }`), or CSS color names (`limegreen`).
     * @default "#ffd98e"
     */
    colorB: Parameters<typeof transformColor>[0];
    /**
     * Color space for the rest→excited color ramp
     *
     * Accepts one of the predefined option values.
     * @default "oklab"
     */
    colorSpace: string;
}
export declare const componentDefinition: GpuShaderDefinition<ComponentProps>;
export default componentDefinition;
//# sourceMappingURL=index.d.ts.map