Camera.orthographicSize

# [Camera](https://docs.unity3d.com/cn/2019.4/ScriptReference/Camera.html).orthographicSize

public float **orthographicSize** ;

## 描述

处于正交模式时，摄像机大小的一半。

orthographicSize 属性定义 [orthographic](https://docs.unity3d.com/cn/2019.4/ScriptReference/Camera-orthographic.html) 摄像机的视体。要编辑该大小，请先使用脚本或在 Inspector 中将摄像机设置为 orthographic。 orthographicSize 为垂直视体大小的一半。视体的水平大小取决于宽高比。

如果是非正交摄像机，将忽略 Orthographic 大小（请参阅 [orthographic](https://docs.unity3d.com/cn/2019.4/ScriptReference/Camera-orthographic.html)）。

另请参阅：[camera component](https://docs.unity3d.com/cn/2019.4/Manual/class-Camera.html)。

```
using UnityEngine;

public class Example : MonoBehaviour
{
    //Assign this Camera in the Inspector
    public Camera m_OrthographicCamera;
    //These are the positions and dimensions of the Camera view in the Game view
    float m_ViewPositionX, m_ViewPositionY, m_ViewWidth, m_ViewHeight;

void Start()
    {
        //This sets the Camera view rectangle to be in the bottom corner of the screen
        m_ViewPositionX = 0;
        m_ViewPositionY = 0;

//This sets the Camera view rectangle to be smaller so you can compare the orthographic view of this Camera with the perspective view of the Main Camera
        m_ViewWidth = 0.4f;
        m_ViewHeight = 0.4f;

//This enables the Camera (the one that is orthographic)
        m_OrthographicCamera.enabled = true;

//If the Camera exists in the inspector, enable orthographic mode and change the size
        if (m_OrthographicCamera)
        {
            //This enables the orthographic mode
            m_OrthographicCamera.orthographic = true;
            //Set the size of the viewing volume you'd like the orthographic Camera to pick up (5)
            m_OrthographicCamera.orthographicSize = 5.0f;
            //Set the orthographic Camera Viewport size and position
            m_OrthographicCamera.rect = new Rect(m_ViewPositionX, m_ViewPositionY, m_ViewWidth, m_ViewHeight);
        }
    }
}
```