/******************************************************************************
 * Spine Runtimes License Agreement
 * Last updated April 5, 2025. Replaces all prior versions.
 *
 * Copyright (c) 2013-2025, Esoteric Software LLC
 *
 * Integration of the Spine Runtimes into software or otherwise creating
 * derivative works of the Spine Runtimes is permitted under the terms and
 * conditions of Section 2 of the Spine Editor License Agreement:
 * http://esotericsoftware.com/spine-editor-license
 *
 * Otherwise, it is permitted to integrate the Spine Runtimes into software
 * or otherwise create derivative works of the Spine Runtimes (collectively,
 * "Products"), provided that each user of the Products must obtain their own
 * Spine Editor license and redistribution of the Products in any form must
 * include this license and copyright notice.
 *
 * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
 * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
import type { SlotPose } from "../SlotPose.js";
import type { Slot } from "../Slot.js";
import type { TextureRegion } from "../Texture.js";
import { Color, type NumberArrayLike } from "../Utils.js";
import { Attachment } from "./Attachment.js";
import type { HasSequence } from "./HasSequence.js";
import type { Sequence } from "./Sequence.js";
/** An attachment that displays a textured quadrilateral.
 *
 * See [Region attachments](http://esotericsoftware.com/spine-regions) in the Spine User Guide. */
export declare class RegionAttachment extends Attachment implements HasSequence {
    readonly sequence: Sequence;
    /** The local x translation. */
    x: number;
    /** The local y translation. */
    y: number;
    /** The local scaleX. */
    scaleX: number;
    /** The local scaleY. */
    scaleY: number;
    /** The local rotation in degrees, counter clockwise. */
    rotation: number;
    /** The width of the region attachment in Spine. */
    width: number;
    /** The height of the region attachment in Spine. */
    height: number;
    /** The name of the texture region for this attachment. */
    path?: string;
    /** The color to tint the region attachment. */
    color: Color;
    tempColor: Color;
    constructor(name: string, sequence: Sequence);
    copy(): Attachment;
    /** Transforms the attachment's four vertices to world coordinates.
     *
     * See <a href="http://esotericsoftware.com/spine-runtime-skeletons#World-transforms">World transforms</a> in the Spine
     * Runtimes Guide.
     * @param worldVertices The output world vertices. Must have a length >= `offset` + 8.
     * @param offset The `worldVertices` index to begin writing values.
     * @param stride The number of `worldVertices` entries between the value pairs written. */
    computeWorldVertices(slot: Slot, vertexOffsets: NumberArrayLike, worldVertices: NumberArrayLike, offset: number, stride: number): void;
    getOffsets(pose: SlotPose): number[];
    updateSequence(): void;
    /** Computes {@link Sequence.getUVs | UVs} and {@link Sequence.getOffsets | offsets} for a region attachment.
     * @param uvs Output array for the computed UVs, length of 8.
     * @param offset Output array for the computed vertex offsets, length of 8. */
    static computeUVs(region: TextureRegion | null, x: number, y: number, scaleX: number, scaleY: number, rotation: number, width: number, height: number, offset: number[], uvs: NumberArrayLike): void;
    static X1: number;
    static Y1: number;
    static C1R: number;
    static C1G: number;
    static C1B: number;
    static C1A: number;
    static U1: number;
    static V1: number;
    static X2: number;
    static Y2: number;
    static C2R: number;
    static C2G: number;
    static C2B: number;
    static C2A: number;
    static U2: number;
    static V2: number;
    static X3: number;
    static Y3: number;
    static C3R: number;
    static C3G: number;
    static C3B: number;
    static C3A: number;
    static U3: number;
    static V3: number;
    static X4: number;
    static Y4: number;
    static C4R: number;
    static C4G: number;
    static C4B: number;
    static C4A: number;
    static U4: number;
    static V4: number;
}