/**
 * Vertex snapping operations
 * Core logic for snapping elements to vertices
 */
import { OutlinerElement } from '../geometry/outliner_element';
import { Cube } from '../geometry/cube';
import { Mesh } from '../geometry/mesh';
import { Vector3 } from './transform';
export interface VertexSnapOptions {
    mode: 'move' | 'scale' | 'rotate';
    ignoreAxis?: {
        x?: boolean;
        y?: boolean;
        z?: boolean;
    };
    align?: 'longest' | 'direction' | 'x' | 'y' | 'z';
}
/**
 * Get global vertex position from element
 */
export declare function getGlobalVertexPosition(element: OutlinerElement, vertex: Vector3 | string, worldMatrix?: any): Vector3;
/**
 * Calculate distance between two vertices
 */
export declare function getVertexDistance(vertex1: Vector3, vertex2: Vector3): number;
/**
 * Snap element origin to target vertex (move mode)
 */
export declare function snapElementOrigin(element: OutlinerElement, targetVertex: Vector3, options?: VertexSnapOptions): void;
/**
 * Snap mesh vertices to target vertex
 */
export declare function snapMeshVertices(mesh: Mesh, selectedVertices: string[], targetVertex: Vector3, options?: VertexSnapOptions): void;
/**
 * Snap cube to target vertex (scale mode)
 * Scales cube by moving from/to points
 */
export declare function snapCubeScale(cube: Cube, targetVertex: Vector3, vertexIndex: number, options?: VertexSnapOptions): void;
/**
 * Snap element rotation (rotate mode)
 */
export declare function snapElementRotation(element: OutlinerElement, startVertex: Vector3, targetVertex: Vector3, options?: VertexSnapOptions): void;
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