import { SelectionBehavior } from './computeSelectedElements';
/**
 * Canvas overlay that draws the lasso / box selection shape on top of the viewer.
 *
 * Visual convention:
 *  - Enclosure (left→right): solid outline, blue fill
 *  - Intersection (right→left): dashed outline, green fill
 */
export declare class SelectionOverlay {
    private canvas;
    private ctx;
    private container;
    constructor(container: HTMLElement);
    resize(): void;
    /**
     * Draw the selection shape from NDC points ([-1,1] range).
     * @param points - flat array [x0, y0, z0, x1, y1, z1, ...]
     * @param behavior - "enclosure" for solid blue, "intersection" for dashed green
     */
    draw(points: number[], behavior?: SelectionBehavior): void;
    clear(): void;
    dispose(): void;
}