@esotericsoftware/spine-core/dist/attachments/PathAttachment.js

The official Spine Runtimes for the web.

/******************************************************************************
 * 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 { Color, Utils } from "../Utils.js";
import { VertexAttachment } from "./Attachment.js";
/** An attachment whose vertices make up a composite Bezier curve.
 *
 * See {@link PathConstraint} and [Paths](http://esotericsoftware.com/spine-paths) in the Spine User Guide. */
export class PathAttachment extends VertexAttachment {
    /** The lengths along the path in the setup pose from the start of the path to the end of each Bezier curve. */
    lengths = [];
    /** If true, the start and end knots are connected. */
    closed = false;
    /** If true, additional calculations are performed to make calculating positions along the path more accurate. If false, fewer
     * calculations are performed but calculating positions along the path is less accurate. */
    constantSpeed = false;
    /** The color of the path as it was in Spine. Available only when nonessential data was exported. Paths are not usually
     * rendered at runtime. */
    color = new Color(1, 1, 1, 1);
    constructor(name) {
        super(name);
    }
    copy() {
        let copy = new PathAttachment(this.name);
        this.copyTo(copy);
        copy.lengths = new Array(this.lengths.length);
        Utils.arrayCopy(this.lengths, 0, copy.lengths, 0, this.lengths.length);
        copy.closed = closed;
        copy.constantSpeed = this.constantSpeed;
        copy.color.setFromColor(this.color);
        return copy;
    }
}
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