/** Eight resize grips: corners + mid-edges. */
export type ResizeHandleId = 'nw' | 'n' | 'ne' | 'w' | 'e' | 'sw' | 's' | 'se';
export interface ResizeBox {
    x: number;
    y: number;
    width: number;
    height: number;
}
/**
 * Resize a box from a handle while anchoring the opposite edge/corner.
 * Outward drag grows; inward drag shrinks (clamped to min size).
 */
export declare function applyAnchoredResize(start: ResizeBox, handle: ResizeHandleId, pointerX: number, pointerY: number, minW?: number, minH?: number): ResizeBox;
export declare const RESIZE_HANDLES: Array<{
    id: ResizeHandleId;
    /** Normalized position on the selection box (0–1). */
    u: number;
    v: number;
}>;