应用Unity剧本自定义分辨率完成相机截一张高清截图【C#.Net教程】,c#,unity

近来做项目的时刻需要在游戏里截一张高清截图，研讨了一下写成剧本，轻易今后运用。
剧本能够自定义分辨率，用相机截高清截图。能够用代码动态截图，也能够在编辑形式下截图。
注重截图宽高比要准确，宽高比不准确时能够会出问题。

截图结果：

剧本:
CameraCapture.cs

using UnityEngine;
using System.IO;

/// <summary>
/// 相机截图
/// <para>ZhangYu 2018-07-06</para>
/// </summary>
public class CameraCapture : MonoBehaviour {

    // 截图尺寸
    public enum CaptureSize {
        CameraSize,
        ScreenResolution,
        FixedSize
    }

    // 目的摄像机
    public Camera targetCamera;
    // 截图尺寸
    public CaptureSize captureSize = CaptureSize.CameraSize;
    // 像素尺寸
    public Vector2 pixelSize;
    // 保留途径
    public string savePath = "StreamingAssets/";
    // 文件名称
    public string fileName = "cameraCapture.png";

    #if UNITY_EDITOR
    private void Reset() {
        targetCamera = GetComponent<Camera>();
        pixelSize = new Vector2(Screen.currentResolution.width, Screen.currentResolution.height);
    }
    #endif

    /// <summary> 保留截图 </summary>
    /// <param name="camera">目的摄像机</param>
    public void saveCapture() {
        Vector2 size = pixelSize;
        if (captureSize == CaptureSize.CameraSize) {
            size = new Vector2(targetCamera.pixelWidth, targetCamera.pixelHeight);
        } else if (captureSize == CaptureSize.ScreenResolution) {
            size = new Vector2(Screen.currentResolution.width, Screen.currentResolution.height);
        }
        string path = Application.dataPath + "/" + savePath + fileName;
        saveTexture(path, capture(targetCamera, (int)size.x, (int)size.y));
    }

    /// <summary> 相机截图 </summary>
    /// <param name="camera">目的相机</param>
    public static Texture2D capture(Camera camera) {
        return capture(camera, Screen.width, Screen.height);
    }

    /// <summary> 相机截图 </summary>
    /// <param name="camera">目的相机</param>
    /// <param name="width">宽度</param>
    /// <param name="height">高度</param>
    public static Texture2D capture(Camera camera, int width, int height) {
        RenderTexture rt = new RenderTexture(width, height, 0);
        rt.depth = 24;
        rt.antiAliasing = 8;
        camera.targetTexture = rt;
        camera.RenderDontRestore();
        RenderTexture.active = rt;
        Texture2D texture = new Texture2D(width, height, TextureFormat.ARGB32, false, true);
        Rect rect = new Rect(0, 0, width, height);
        texture.ReadPixels(rect, 0, 0);
        texture.filterMode = FilterMode.Point;
        texture.Apply();
        camera.targetTexture = null;
        RenderTexture.active = null;
        Destroy(rt);
        return texture;
    }

    /// <summary> 保留贴图 </summary>
    /// <param name="path">保留途径</param>
    /// <param name="texture">Texture2D</param>
    public static void saveTexture(string path, Texture2D texture) {
        File.WriteAllBytes(path, texture.EncodeToPNG());
        #if UNITY_EDITOR
        Debug.Log("已保留截图到:" + path);
        #endif
    }

}

剧本编辑器:

CameraCaptureEditor.cs

using UnityEditor;
using UnityEngine;

/// <summary>
/// 相机截图 编辑器
/// <para>ZhangYu 2018-07-06</para>
/// </summary>
[CanEditMultipleObjects]
[CustomEditor(typeof(CameraCapture))]
public class CameraCaptureEditor : Editor {

    public override void OnInspectorGUI() {
        // 属性
        CameraCapture script = (CameraCapture)target;
        int selected = (int)script.captureSize;

        // 重绘GUI
        EditorGUI.BeginChangeCheck();
        drawProperty("targetCamera", "目的像机");
        string[] options = new string[] { "像机尺寸", "屏幕尺寸", "牢固尺寸"};
        selected = EditorGUILayout.Popup("截图尺寸", selected, options, GUILayout.ExpandWidth(true));
        script.captureSize = (CameraCapture.CaptureSize)selected;
        if (script.captureSize == CameraCapture.CaptureSize.FixedSize) {
            drawProperty("pixelSize", "像素尺寸");
            EditorGUILayout.HelpBox("请坚持准确的宽高比！\n不然截图地区能够涌现毛病。", MessageType.Info);
        }
        drawProperty("savePath", "保留途径");
        drawProperty("fileName", "文件名称");

        // 保留截图按钮
        bool isPress = GUILayout.Button("保留截图", GUILayout.ExpandWidth(true));
        if (isPress) script.saveCapture();
        if (EditorGUI.EndChangeCheck()) serializedObject.ApplyModifiedProperties();
    }

    private void drawProperty(string property, string label) {
        EditorGUILayout.PropertyField(serializedObject.FindProperty(property), new GUIContent(label), true);
    }

}

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