using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class adaptive_ui : MonoBehaviour
{
    public RawImage rawImage; // 使用RawImage组件展示纹理
    public RectTransform boundaryRect; // 代表边界矩形的RectTransform

    void Start()
    {
        ScaleAndCropTexture();
    }

    void ScaleAndCropTexture()
    {
        Texture texture = rawImage.texture;
        float textureWidth = texture.width;
        float textureHeight = texture.height;

        float boundaryWidth = boundaryRect.rect.width;
        float boundaryHeight = boundaryRect.rect.height;

        // 计算缩放比例，确保较短的一边适应边界矩形
        float scaleFactor = Mathf.Max(boundaryWidth / textureWidth, boundaryHeight / textureHeight);

        // 设置缩放后的尺寸
        float newWidth = textureWidth * scaleFactor;
        float newHeight = textureHeight * scaleFactor;

        // 设置RawImage的RectTransform尺寸，使其居中并覆盖边界矩形
        rawImage.rectTransform.sizeDelta = new Vector2(newWidth, newHeight);

        // 裁剪超出的部分
        rawImage.rectTransform.anchoredPosition = Vector2.zero; // 确保居中
    }
}