31 lines
1.5 KiB
C#
31 lines
1.5 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class CameraAdjust : MonoBehaviour
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{
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public int logicalScreenWidth = 720;
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public int logicalScreenHeight = 1280;
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void Awake()
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{
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Camera camera = GetComponent<Camera>();
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float manualHeight;
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//然后得到当前屏幕的高宽比 和 你自定义需求的高宽比。通过判断他们的大小，来不同赋值
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if (1.0f * Screen.height / Screen.width > 1.0f * logicalScreenHeight / logicalScreenWidth)
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{
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//如果屏幕的高宽比大于自定义的高宽比 。则通过公式 logicalScreenWidth * manualHeight = Screen.width * Screen.height；
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//来求得适应的manualHeight ，用它求出 实际高度与理想高度的比率 scale
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manualHeight = 1.0f * logicalScreenWidth / Screen.width * Screen.height;
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}
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else
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{ //否则 直接给manualHeight 自定义的 logicalScreenHeight 的值，那么相机的fieldOfView就会原封不动
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manualHeight = 1.0f * logicalScreenHeight;
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}
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float scale = manualHeight*1.0f / logicalScreenHeight;
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//Camera.fieldOfView 视野: 这是垂直视野：水平FOV取决于视口的宽高比，当相机是正交时fieldofView被忽略
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//把实际高度与理想高度的比率scale乘加给Camera.fieldOfView。
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//这样就能达到自动调节分辨率的效果
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camera.fieldOfView *= scale;
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}
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}
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