import type { Shape, ShapeGeneratorOptions, ShapeParticle } from '.';
export declare class Sphere implements Shape {
    arc: number;
    radius: number;
    arcMode: number;
    constructor(props: Record<string, any>);
    getHorizontalAngle(): number;
    generate(opt: ShapeGeneratorOptions): ShapeParticle;
}
export declare class Hemisphere extends Sphere {
    getHorizontalAngle(): number;
}