obsidian/笔记文件/2.笔记/2D UI跟随3D场景的物体.md

#unity/日常积累

坐标转换，绝对坐标设定，逻辑参考

UITextFollowSprite

using UnityEngine;

public class UITextFollowSprite : MonoBehaviour
{
    public Transform targetSprite;
    public Camera mainCamera;
    public Vector2 screenOffset;
    
    void Update()
    {
        if (targetSprite != null && mainCamera != null)
        {
            // 将3D世界坐标转换为屏幕坐标
            Vector3 screenPos = mainCamera.WorldToScreenPoint(targetSprite.position);
            
            // 设置UI Text的屏幕位置
            GetComponent<RectTransform>().position = screenPos + (Vector3)screenOffset;
        }
    }
}

这是ui里面的text，跟随3D物体的表现效果 参考：

![[Pasted image 20250711084311.png]]