import { Vector2 } from '@daign/math';
import { ControlObject } from '../control-elements';
/**
 * Interface for modifiers that restrict or modify the outcome of drawing actions.
 */
export interface IControlModifier {
    enabled: boolean;
    /**
     * Modify the position change that has been requested for a control object.
     * A change that is made to one point can affect others too, so it is required to return the
     * whole array of points. Modifiers can be chained, that's why the points fed to a modifier have
     * to be taken from the passed points array, not from the original points in the passed control
     * object.
     * @param updatedPoints - The array of updated points.
     * @param pointIndex - The index of the point that initiated the change.
     * @param controlObject - The corresponding control object.
     * @returns The modified array of points.
     */
    modifyPoints(updatedPoints: Vector2[], pointIndex: number, controlObject: ControlObject): Vector2[];
}