import { ContextManager } from '@zcomponent/core';
import * as THREE from 'three';
import { Trigger, TriggerConstructorProps } from './Trigger';
/**
 * A sphere trigger component.
 * @zcomponent
 * @zgroup Trigger
 * @zicon shapes
 * @zparents three/Object3D/**
 */
export declare class SphereTrigger extends Trigger {
    /**
     * Represents the world-space bounding sphere of the trigger.
     */
    worldBoundingSphere: THREE.Sphere;
    /**
     * Constructs a sphere trigger.
     * @param ctx - The context manager.
     * @param props - The properties for trigger construction, including shape.
     */
    constructor(ctx: ContextManager, props: TriggerConstructorProps);
    /**
     * Updates the world-space bounding sphere based on the trigger's current state.
     */
    update(): void;
}