import { OBB, Rect2D } from './transform-geometry';
export type AnchorId = 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right' | 'middle-left' | 'middle-right' | 'top-center' | 'bottom-center';
export type HitZone = {
    type: 'anchor';
    anchor: AnchorId;
} | {
    type: 'rotate';
} | {
    type: 'move';
} | {
    type: 'none';
};
export declare const TRANSFORM_OVERLAY_CONSTANTS: {
    readonly ANCHOR_SIZE: 8;
    readonly ANCHOR_HIT_SIZE: 14;
    readonly EDGE_HIT_WIDTH: 8;
    readonly ROTATE_HANDLE_RADIUS: 5;
    readonly ROTATE_HANDLE_HIT_RADIUS: 16;
    readonly ROTATE_HANDLE_OFFSET: 22;
    readonly BORDER_STROKE_WIDTH: 1.5;
    readonly MIN_SIZE_PX: 1;
    readonly ANGLE_LABEL_OFFSET_X: 12;
    readonly ANGLE_LABEL_OFFSET_Y: 12;
};
export interface AnchorLayout {
    id: AnchorId;
    x: number;
    y: number;
}
export interface RotateHandleLayout {
    x: number;
    y: number;
}
export declare function resolveEnabledAnchors(element: {
    resizable: boolean;
    resizeAnchors?: string[] | null;
}): string[] | null;
export declare function resolveShowRotate(element: {
    resizable: boolean;
    locked?: boolean;
}): boolean;
export declare function layoutAnchors(obbViewport: OBB, enabledAnchors: string[] | null): AnchorLayout[];
export declare function layoutRotateHandle(obbViewport: OBB): RotateHandleLayout;
export declare function hitTestTransformOverlay(pointer: {
    x: number;
    y: number;
}, input: {
    mode: 'single' | 'multi';
    bounds: OBB | Rect2D;
    enabledAnchors: string[] | null;
    showRotate: boolean;
    canMove: boolean;
}): HitZone;
/**
 * 从 event.target 向上遍历 Konva 节点：
 * - name/id 包含 'transform-overlay' → true
 * - 兼容：className === 'Transformer' → true（防御残留）
 */
export declare function isClickOnTransformOverlay(event: {
    target?: any;
}): boolean;
export declare function cursorForHitZone(zone: HitZone, rotationDeg: number): string;