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Unity Dotween RotateAround

SvenVH answered on August 14, 2023 Popularity 3/10 Helpfulness 2/10

answer Unity Dotween RotateAround

Unity Dotween RotateAround

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using DG.Tweening;
using UnityEngine;

public static class DOTweenExtensions {

    public static Tweener DORotateAround2D(this Transform transform, Vector3 pivot, float angle, float duration) {
        Vector3 startPos = transform.position;
        float startAngle = Vector2.SignedAngle(Vector2.right, startPos - pivot);
        float endAngle = startAngle + angle;
        float startZRotation = transform.eulerAngles.z;

        return DOTween.To(() => startAngle, x => startAngle = x, endAngle, duration)
            .OnUpdate(() => {
                float radian = startAngle * Mathf.Deg2Rad;
                float radius = Vector2.Distance(pivot, startPos);
                
                float x = pivot.x + radius * Mathf.Cos(radian);
                float y = pivot.y + radius * Mathf.Sin(radian);
                
                transform.position = new Vector3(x, y, transform.position.z);
                transform.eulerAngles = new Vector3(0, 0, startZRotation + (startAngle - Vector2.SignedAngle(Vector2.right, startPos - pivot)));
            });
    }
}

Popularity 3/10 Helpfulness 2/10 Language csharp

Source: Grepper

Tags: c# dotween

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Contributed on Aug 14 2023

SvenVH

0 Answers Avg Quality 2/10

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