127 lines
4.4 KiB
C#
127 lines
4.4 KiB
C#
using UnityEngine;
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namespace ZXL.Helper
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{
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public static class TextureHelper
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{
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/// <summary>
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/// 精灵图片转纹理
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/// </summary>
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/// <param name="sprite"></param>
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/// <returns></returns>
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public static Texture2D SpriteToTexture2D(Sprite sprite)
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{
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// 获取 Sprite 的纹理
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Texture2D texture = sprite.texture;
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// 创建一个新的 Texture2D 用于存储 Sprite 的图像数据
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Texture2D texture2D = new Texture2D((int)sprite.rect.width, (int)sprite.rect.height);
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// 读取 Sprite 的像素数据到新的 Texture2D
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Color[] pixels = texture.GetPixels(
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(int)sprite.rect.x,
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(int)sprite.rect.y,
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(int)sprite.rect.width,
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(int)sprite.rect.height
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);
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// 将像素数据设置到新的 Texture2D 中
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texture2D.SetPixels(pixels);
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texture2D.Apply(); // 应用更改
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return texture2D;
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}
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/// <summary>
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/// 纹理转精灵图片
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/// </summary>
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/// <param name="texture"></param>
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/// <returns></returns>
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public static Sprite SpriteFromTexture2D(Texture2D texture)
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{
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Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height),
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new Vector2(0.5f, 0.5f));
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return sprite;
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}
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/// <summary>
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/// 截取相机画面并返回纹理图片
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/// </summary>
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/// <param name="camera"></param>
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/// <returns></returns>
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public static Texture2D SaveCameraToTexture(Camera camera)
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{
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Texture2D capturedImage;
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var renderTexture = new RenderTexture(camera.pixelWidth, camera.pixelHeight, 24);
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camera.targetTexture = renderTexture;
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// 创建一个 Texture2D 用来存储相机捕捉的画面
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capturedImage = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.RGB24, false);
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// 从 RenderTexture 中读取像素数据到 Texture2D
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RenderTexture.active = renderTexture;
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capturedImage.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
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capturedImage.Apply();
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// 重置 RenderTexture 的激活状态
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RenderTexture.active = null;
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// 此时 capturedImage 就包含了当前帧的画面，你可以进行保存或者其他操作
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return capturedImage;
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}
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/// <summary>
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/// Texture转Texture2D
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/// </summary>
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/// <param name="texture"></param>
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/// <returns></returns>
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public static Texture2D ConvertTextureToTexture2D(Texture texture)
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{
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Texture2D texture2D = new Texture2D(texture.width, texture.height, TextureFormat.RGBA32, false);
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RenderTexture currentRT = RenderTexture.active;
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// 创建一个新的 RenderTexture
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RenderTexture renderTexture = RenderTexture.GetTemporary(texture.width, texture.height, 32);
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Graphics.Blit(texture, renderTexture);
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// 将 RenderTexture 内容复制到 Texture2D
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RenderTexture.active = renderTexture;
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texture2D.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
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texture2D.Apply();
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// 清理
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RenderTexture.active = currentRT;
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RenderTexture.ReleaseTemporary(renderTexture);
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return texture2D;
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}
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/// <summary>
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/// 纹理图片转二进制数据
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/// </summary>
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/// <param name="texture"></param>
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/// <returns></returns>
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public static byte[] ConvertTextureToByteArray(Texture2D texture)
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{
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return texture.EncodeToPNG();
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}
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/// <summary>
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/// 二进制数据转纹理图片
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/// </summary>
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/// <param name="bytes"></param>
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/// <returns></returns>
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public static Texture2D ConvertByteArrayToTexture2D(byte[] bytes)
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{
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Texture2D texture = new Texture2D(2, 2); // 初始化一个临时的 Texture2D
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if (texture.LoadImage(bytes)) // 使用 LoadImage 来加载字节数据
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{
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return texture;
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}
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else
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{
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Debug.LogError("加载图片失败！");
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return null;
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}
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}
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}
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}
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