Camera.fieldOfView

描述

摄像机的垂直视野，以度为单位。

这是垂直视野；水平视野取决于视口的纵横比。有关更多信息，请参阅 VerticalToHorizontalFieldOfView。

如果 Camera.orthographic 为 true，则摄像机将忽略 fieldOfView。

某些 VR SDK 具有用于 VR 摄像机的固定视野值。启用这些 SDK 的 VR 功能后，此属性将始终返回 SDK 中的值。如果您尝试设置此属性，系统会显示警告消息，并且该值将被忽略。

如果对 Camera.projectionMatrix 进行更改，则摄像机将忽略 fieldOfView。此操作将持续到您调用 Camera.ResetProjectionMatrix 为止。

在 Unity 编辑器中，这对应于摄像机组件检查器中的**裁剪平面：近**属性。

其他资源：摄像机检查器参考。

//Attach this script to an empty GameObject.
//This script creates a Slider that allows you to manipulate the Camera's field of view. Place GameObjects in the Scene to show the full effect.

using UnityEngine;

public class CameraFieldOfViewExample : MonoBehaviour
{
    //This is the field of view that the Camera has
    float m_FieldOfView;

    void Start()
    {
        //Start the Camera field of view at 60
        m_FieldOfView = 60.0f;
    }

    void Update()
    {
        //Update the camera's field of view to be the variable returning from the Slider
        Camera.main.fieldOfView = m_FieldOfView;
    }

    void OnGUI()
    {
        //Set up the maximum and minimum values the Slider can return (you can change these)
        float max, min;
        max = 150.0f;
        min = 20.0f;
        //This Slider changes the field of view of the Camera between the minimum and maximum values
        m_FieldOfView = GUI.HorizontalSlider(new Rect(20, 20, 100, 40), m_FieldOfView, min, max);
    }
}