import * as spec from '@galacean/effects-specification';
import type { Shape, ShapeGeneratorOptions, ShapeParticle } from './index';
export declare class Cone implements Shape {
    radius: number;
    angle: number;
    arc: number;
    arcMode: number;
    constructor(props: Record<string, any>);
    generate(opt: ShapeGeneratorOptions): ShapeParticle;
}
export declare function getArcAngle(arc: number, arcMode: spec.ShapeArcMode, opt: ShapeGeneratorOptions): number;