/******************************************************************************
 * 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
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 *****************************************************************************/
import type { Bone } from "./Bone.js";
import type { BonePose } from "./BonePose.js";
import { Constraint } from "./Constraint.js";
import type { Physics } from "./Physics.js";
import type { Skeleton } from "./Skeleton.js";
import type { TransformConstraintData } from "./TransformConstraintData.js";
import { TransformConstraintPose } from "./TransformConstraintPose.js";
/** Adjusts the world transform of the constrained bones to match that of the source bone.
 *
 * See [Transform constraints](http://esotericsoftware.com/spine-transform-constraints) in the Spine User Guide. */
export declare class TransformConstraint extends Constraint<TransformConstraint, TransformConstraintData, TransformConstraintPose> {
    /** The bones that will be modified by this transform constraint. */
    bones: Array<BonePose>;
    /** The bone whose world transform will be copied to the constrained bones. */
    source: Bone;
    constructor(data: TransformConstraintData, skeleton: Skeleton);
    copy(skeleton: Skeleton): TransformConstraint;
    update(skeleton: Skeleton, physics: Physics): void;
    sort(skeleton: Skeleton): void;
    isSourceActive(): boolean;
}