import p5 from 'p5';
export declare class Particle {
    private p5;
    pos: p5.Vector;
    vel: p5.Vector;
    size: number;
    color: p5.Color;
    rotation?: number | undefined;
    constructor(p5: p5, pos: p5.Vector, vel: p5.Vector, size: number, color: p5.Color, rotation?: number | undefined);
    update(): void;
    draw(): void;
}