通过摄像机来AdjustCamera----个人所用_adjustcameradistance-优快云博客

本文链接：https://blog.youkuaiyun.com/Edision_li/article/details/82733495

本文介绍了一个Unity中的简单脚本，用于实现游戏画面在不同分辨率设备上的适配。通过计算目标宽高比与实际屏幕宽高比之间的差异，调整相机视口以确保游戏内容正确显示。

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public class AdjustCamera : MonoBehaviour {

private new Camera camera;

[SerializeField]
private TargetScreenSize sizeScreenTarget;

// 构造函数
private AdjustCamera() { }

void Awake()
{
camera = GetComponent<Camera>();
}

void Start()
{
AdjustRatio();
}

private void AdjustRatio()
{
float targetAspect = sizeScreenTarget.width / sizeScreenTarget.height;
float screenAspect = (float)Screen.width / (float)Screen.height;
float scaleHeight = screenAspect / targetAspect;

if (scaleHeight < 1.0f)
{
Rect rect = camera.rect;
rect.width = 1.0f;
rect.height = scaleHeight;
rect.x = 0;
rect.y = (1.0f - scaleHeight) / 2.0f;
camera.rect = rect;
}
else
{
float scaleWidth = 1.0f / scaleHeight;

Rect rect = camera.rect;
rect.width = scaleWidth;
rect.height = 1.0f;
rect.x = (1.0f - scaleWidth) / 2.0f;
rect.y = 0;

camera.rect = rect;
}
}
}

[System.Serializable]
public struct TargetScreenSize
{
public float width;
public float height;
}

配合：挂Canvas上

/****************************************************
    文件：CanvasCtrl.cs
	作者：Edision
    邮箱: 424054763@qq.com
    日期：#CreateTime#
	功能：Nothing
*****************************************************/

using UnityEngine;
using UnityEngine.UI;

public class CanvasCtrl : MonoBehaviour 
{
    void Start()
    {
        float standard_width = 1080f;        //初始宽度  
        float standard_height = 1920f;       //初始高度  
        float device_width = 0f;                //当前设备宽度  
        float device_height = 0f;               //当前设备高度  
        float adjustor = 0f;         //屏幕矫正比例  
        //获取设备宽高  
        device_width = Screen.width;
        device_height = Screen.height;
        //计算宽高比例  
        float standard_aspect = standard_width / standard_height;
        float device_aspect = device_width / device_height;
        //计算矫正比例  
        if (device_aspect < standard_aspect)
        {
            adjustor = standard_aspect / device_aspect;
        }

        CanvasScaler canvasScalerTemp = transform.GetComponent<CanvasScaler>();
        if (adjustor == 0)
        {
            canvasScalerTemp.matchWidthOrHeight = 1;
        }
        else
        {
            canvasScalerTemp.matchWidthOrHeight = 0;
        }
    }
}