import { b2TimeStep } from "@box2d/core";
import { b2Controller } from "./b2_controller";
/**
 * Applies simplified gravity between every pair of bodies
 */
export declare class b2GravityController extends b2Controller {
    /**
     * Specifies the strength of the gravitiation force
     */
    G: number;
    /**
     * If true, gravity is proportional to r^-2, otherwise r^-1
     */
    invSqr: boolean;
    /**
     * @see b2Controller::Step
     */
    Step(_step: b2TimeStep): void;
}
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