Time.captureDeltaTime

描述

减慢游戏播放时间，以便在帧之间保存屏幕截图。

如果该属性具有非零值，则以 captureDeltaTime 为间隔进行帧更新，而与实际时间和渲染帧所需的时间无关。如果需要捕获帧率恒定的电影并在帧之间留出充足的时间来保存屏幕图像，该属性很有用。

using UnityEngine;
using System.Collections;

// Capture frames as a screenshot sequence. Images are
// stored as PNG files in a folder - these can be combined into
// a movie using image utility software (eg, QuickTime Pro).

public class ExampleClass : MonoBehaviour
{
    // The folder to contain our screenshots.
    // If the folder exists we will append numbers to create an empty folder.
    public string folder = "ScreenshotFolder";
    public int frameRate = 25;
    void Start()
    {
        // Set the playback framerate (real time will not relate to game time after this).
        Time.captureDeltaTime = 1.0f / frameRate;

        // Create the folder
        System.IO.Directory.CreateDirectory(folder);
    }

    void Update()
    {
        // Append filename to folder name (format is '0005 shot.png"')
        string name = string.Format("{0}/{1:D04} shot.png", folder, Time.frameCount);

        // Capture the screenshot to the specified file.
        ScreenCapture.CaptureScreenshot(name);
    }
}