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