81 lines
2.5 KiB
C#
81 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using Cysharp.Threading.Tasks;
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using Stary.Evo;
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using UnityEngine;
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using UnityEngine.UI;
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using Random = UnityEngine.Random;
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namespace Script.Util
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{
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public static class WebRTCUtil
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{
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public static Dictionary<string, Sprite> _avatarCache = new();
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public static Color GetRandomColor()
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{
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return new Color(
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Random.Range(0.2f, 0.8f),
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Random.Range(0.2f, 0.8f),
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Random.Range(0.2f, 0.8f),
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1f
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);
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}
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public static async UniTask DownloadAndSetAvatar(string avatarUrl, Image targetImage)
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{
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try
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{
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if (_avatarCache.TryGetValue(avatarUrl, out var sprite))
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{
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targetImage.sprite = sprite;
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return;
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}
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var tempPath = Path.Combine(Application.temporaryCachePath, $"avatar_{Guid.NewGuid()}.png");
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var result = await WebRequestSystem.GetFile(avatarUrl, tempPath);
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if (result.code == 200)
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{
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var bytes = File.ReadAllBytes(tempPath);
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var texture = new Texture2D(2, 2);
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texture.LoadImage(bytes);
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sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height),
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Vector2.one * 0.5f);
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targetImage.sprite = sprite;
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File.Delete(tempPath);
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_avatarCache.TryAdd(avatarUrl, sprite);
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}
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}
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catch (Exception e)
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{
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Debug.LogError($"下载头像失败: {e.Message}");
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}
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}
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/// <summary>
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/// 尝试将dataUrl解码为Texture2D
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/// </summary>
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/// <param name="dataUrl"></param>
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/// <param name="tex"></param>
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/// <returns></returns>
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public static bool TryDecodeDataUrlToTexture(string dataUrl, out Texture2D tex)
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{
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tex = null;
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if (string.IsNullOrEmpty(dataUrl)) return false;
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if (!dataUrl.StartsWith("data:image/")) return false;
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var comma = dataUrl.IndexOf(',');
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if (comma < 0) return false;
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var b64 = dataUrl.Substring(comma + 1);
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var bytes = Convert.FromBase64String(b64);
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tex = new Texture2D(2, 2, TextureFormat.RGBA32, false);
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return tex.LoadImage(bytes);
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}
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}
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} |