import Vector from './Vector';
declare class Particle {
    radius: number;
    perceivedRadius: number;
    friction: number;
    mass: number;
    position: Vector;
    velocity: Vector;
    color: string;
    growthRate: number;
    decayRate: number;
    constructor({ radius, friction, mass, position, velocity, color, growthRate, decayRate }?: {
        radius?: number | undefined;
        friction?: number | undefined;
        mass?: number | undefined;
        position?: Vector | undefined;
        velocity?: Vector | undefined;
        color?: string | undefined;
        growthRate?: number | undefined;
        decayRate?: number | undefined;
    });
}
export default Particle;