/******************************************************************************
 * Copyright (C) Ultraleap, Inc. 2011-2023.                                   *
 *                                                                            *
 * Use subject to the terms of the Apache License 2.0 available at            *
 * http://www.apache.org/licenses/LICENSE-2.0, or another agreement           *
 * between Ultraleap and you, your company or other organization.             *
 ******************************************************************************/

namespace Leap
{
    public static class CopyFromOtherExtensions
    {

        /**
         * Copies the data from a source frame into a frame.  After the operation is
         * complete, the frame will be identical to the source frame.
         *
         * @param source The source frame that is copied into a frame.
         */
        public static Frame CopyFrom(this Frame frame, Frame source)
        {
            frame.Id = source.Id;
            frame.Timestamp = source.Timestamp;
            frame.CurrentFramesPerSecond = source.CurrentFramesPerSecond;
            frame.DeviceID = source.DeviceID;

            frame.ResizeHandList(source.Hands.Count);

            for (int i = frame.Hands.Count; i-- != 0;)
            {
                frame.Hands[i].CopyFrom(source.Hands[i]);
            }

            return frame;
        }

        /*
         * Copies the data from a source hand into a hand.  After the operation is
         * complete, the hand will be identical to the source hand.
         *
         * @param source The source hand that is copied into a hand.
         */
        public static Hand CopyFrom(this Hand hand, Hand source)
        {
            hand.Id = source.Id;
            hand.Confidence = source.Confidence;
            hand.GrabStrength = source.GrabStrength;
            hand.Rotation = source.Rotation;
            hand.PinchStrength = source.PinchStrength;
            hand.PinchDistance = source.PinchDistance;
            hand.PalmWidth = source.PalmWidth;
            hand.IsLeft = source.IsLeft;
            hand.TimeVisible = source.TimeVisible;
            hand.PalmPosition = source.PalmPosition;
            hand.StabilizedPalmPosition = source.StabilizedPalmPosition;
            hand.PalmVelocity = source.PalmVelocity;
            hand.PalmNormal = source.PalmNormal;
            hand.Direction = source.Direction;
            hand.WristPosition = source.WristPosition;

            hand.Arm.CopyFrom(source.Arm);

            for (int i = 5; i-- != 0;)
            {
                hand.Fingers[i].CopyFrom(source.Fingers[i]);
            }

            return hand;
        }

        /**
         * Copies the data from a source finger into a finger.  After the operation is
         * complete, the finger will be identical to the source finger.
         *
         * @param source The source finger that is copied into a finger.
         */
        public static Finger CopyFrom(this Finger finger, Finger source)
        {
            for (int i = 4; i-- != 0;)
            {
                finger.bones[i].CopyFrom(source.bones[i]);
            }

            finger.Id = source.Id;
            finger.HandId = source.HandId;
            finger.TimeVisible = source.TimeVisible;

            finger.TipPosition = source.TipPosition;
            finger.Direction = source.Direction;
            finger.Width = source.Width;
            finger.Length = source.Length;
            finger.IsExtended = source.IsExtended;
            finger.Type = source.Type;

            return finger;
        }

        /**
         * Copies the data from a source bone into a bone.  After the operation is
         * complete, the bone will be identical to the source bone.
         *
         * @param source The source bone that is copied into a bone.
         */
        public static Bone CopyFrom(this Bone bone, Bone source)
        {
            bone.PrevJoint = source.PrevJoint;
            bone.NextJoint = source.NextJoint;
            bone.Direction = source.Direction;
            bone.Center = source.Center;
            bone.Length = source.Length;
            bone.Width = source.Width;
            bone.Rotation = source.Rotation;
            bone.Type = source.Type;

            return bone;
        }
    }
}