/******************************************************************************
 * Spine Runtimes License Agreement
 * Last updated April 5, 2025. Replaces all prior versions.
 *
 * Copyright (c) 2013-2025, Esoteric Software LLC
 *
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 * derivative works of the Spine Runtimes is permitted under the terms and
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 *
 * 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
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#ifndef Spine_IkConstraint_h
#define Spine_IkConstraint_h

#include <spine/Constraint.h>
#include <spine/ConstraintData.h>
#include <spine/IkConstraintData.h>
#include <spine/IkConstraintPose.h>
#include <spine/Array.h>

namespace spine {
	class Skeleton;
	class Bone;
	class BonePose;

	class SP_API IkConstraint : public ConstraintGeneric<IkConstraint, IkConstraintData, IkConstraintPose> {
		friend class Skeleton;

		friend class IkConstraintTimeline;

		RTTI_DECL

	public:
		IkConstraint(IkConstraintData &data, Skeleton &skeleton);

		virtual IkConstraint &copy(Skeleton &skeleton);

		virtual void update(Skeleton &skeleton, Physics physics) override;

		virtual void sort(Skeleton &skeleton) override;

		virtual bool isSourceActive() override;

		IkConstraintData &getData() override;

		Array<BonePose *> &getBones();

		Bone &getTarget();

		void setTarget(Bone &inValue);

		/// Adjusts the bone rotation so the tip is as close to the target position as possible. The target is specified
		/// in the world coordinate system.
		static void apply(Skeleton &skeleton, BonePose &bone, float targetX, float targetY, bool compress, bool stretch, bool uniform, float mix);

		/// Adjusts the parent and child bone rotations so the tip of the child is as close to the target position as
		/// possible. The target is specified in the world coordinate system.
		/// @param child A direct descendant of the parent bone.
		static void apply(Skeleton &skeleton, BonePose &parent, BonePose &child, float targetX, float targetY, int bendDirection, bool stretch,
						  bool uniform, float softness, float mix);

	private:
		Array<BonePose *> _bones;
		Bone *_target;
	};
}

#endif /* Spine_IkConstraint_h */