SpriteVertexPositionChanger.cs

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using System;
using Unity.Collections;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.U2D;
using UnityEngine.UI;
 
namespace Applibot;
 
public class SpriteVertexPositionChanger : MonoBehaviour
{
    public float scale = 1.5f;
 
    [NonSerialized]
    private Image _image;
 
    private void Start()
    {
        _image = GetComponent<Image>();
        if (_image == null)
        {
            Debug.LogError("Imageコンポーネントが必要です");
            return;
        }
        _image.useSpriteMesh = true;
        Sprite sprite = _image.sprite;
        if (sprite.packed)
        {
            _image.rectTransform.sizeDelta *= scale;
        }
        ChangeMeshScale(sprite);
    }
 
    private void ChangeMeshScale(Sprite sprite)
    {
        NativeSlice<Vector3> vertexAttribute = sprite.GetVertexAttribute<Vector3>(VertexAttribute.Position);
        NativeArray<Vector3> src = new NativeArray<Vector3>(vertexAttribute.Length, Allocator.Temp);
        for (int i = 0; i < vertexAttribute.Length; i++)
        {
            src[i] = vertexAttribute[i] * scale;
        }
        sprite.SetVertexAttribute(VertexAttribute.Position, src);
        src.Dispose();
    }
}