import { type SnapIndex } from './spatial';
export declare const SNAP_THRESHOLD = 8;
export declare const FINE_GRID_SIZE = 8;
export declare const GUIDE_PAD = 14;
export declare const SNAP_MATCH = 0.51;
export declare const SLIDE_MARGIN = 40;
export declare const RELATED_GAP = 240;
export declare const MAX_CTRL_MEASURES = 8;
/** Same-row/column objects beat a slightly closer distant line. */
export declare const RELATION_WEIGHT = 4;
export type SnapKind = 'edge' | 'center' | 'canvas' | 'spacing' | 'size' | 'grid' | 'measure';
export type SnapMode = 'smart' | 'grid';
export interface SnapGuide {
    type: 'vertical' | 'horizontal';
    kind?: SnapKind;
    axis: {
        x: number;
        y: number;
    };
    length: number;
    marks?: number[];
    label?: string;
}
export interface SnapBox {
    minX: number;
    maxX: number;
    minY: number;
    maxY: number;
}
export interface SnapCanvas {
    width: number;
    height: number;
}
export interface SnapOptions {
    mode: SnapMode;
    canvas: SnapCanvas;
    gridSize: number;
    threshold?: number;
    index?: SnapIndex;
    /** When set, append Ctrl distance badges for the already-queried k-set. */
    ctrlMeasures?: boolean;
}
/** Search pad for the per-move Flatbush query: snap threshold or related-object reach. */
export declare const snapQueryPad: (threshold?: number) => number;
export declare const sameSnapGuides: (a: SnapGuide[], b: SnapGuide[]) => boolean;
export interface SnapResult {
    offsetX: number;
    offsetY: number;
    guides: SnapGuide[];
}
export declare const boxWidth: (box: SnapBox) => number;
export declare const boxHeight: (box: SnapBox) => number;
export declare const boxCenterX: (box: SnapBox) => number;
export declare const boxCenterY: (box: SnapBox) => number;
export declare const translateBox: (box: SnapBox, dx: number, dy: number) => SnapBox;
export declare const snapToGrid: (value: number, gridSize: number) => number;
/** Alt uses the visible layout grid, or an 8px fine grid when none is shown. */
export declare const resolveGridSize: (visibleGridSize: number, forceGrid: boolean) => number;
export declare const formatSnapLabel: (value: number) => string;
export declare const formatMeasureLabel: (value: number) => string;
export declare const unionBoxes: (boxes: SnapBox[]) => SnapBox | null;
export declare const snapMovingBox: (moving: SnapBox, others: SnapBox[], options: SnapOptions) => SnapResult;
export interface ResizeSnapOptions extends SnapOptions {
    moving?: SnapBox;
    resizeWidth?: boolean;
    resizeHeight?: boolean;
}
export declare const snapResizePoint: (currentX: number | null, currentY: number | null, others: SnapBox[], options: ResizeSnapOptions) => SnapResult;
/**
 * Cross-axis for a distance badge: stay on the moving box.
 * Shared row/column uses the overlap; otherwise project onto the moving center.
 */
export declare const projectMeasureCross: (moving0: number, moving1: number, other0: number, other1: number) => number;
/**
 * Ctrl-held distance badges: adjacent gaps along live guides, both axes to
 * the most related object, nearest same-row/column neighbors, and slide margins.
 */
export declare const collectCtrlMeasures: (moving: SnapBox, others: SnapBox[], canvas: SnapCanvas, guides?: SnapGuide[]) => SnapGuide[];