fix: 3D模型渲染修复

Views/UserControl/ViewportData/Helper/VideoHelper.cs

@@ -14,11 +14,11 @@ namespace SparkClient.Views.UserControl.ViewportData.Helper;
 
 public class VideoHelper
 {
-      public static async Task CreateVideoFromPngList(List<PngBitmapEncoder> pngEncoders, string outputPath)
+    public static  void CreateVideoFromPngList(List<PngBitmapEncoder> pngEncoders, string outputPath)
     {
         string tempDirectory = Path.Combine(System.Environment.CurrentDirectory, "PngFrames");
         Directory.CreateDirectory(tempDirectory);
-        await Task.Delay(1);
+        
         try
         {
             // Save each PNG frame to a temporary directory
@@ -73,6 +73,73 @@ public class VideoHelper
         }
     }
     
+     public static async Task CreateVideoFromPngListAsync(List<PngBitmapEncoder> pngEncoders, string outputPath)
+    {
+        string tempDirectory = Path.Combine(Environment.CurrentDirectory, "PngFrames");
+        Directory.CreateDirectory(tempDirectory);
+        await Task.Delay(1).ConfigureAwait(false);
+
+        try
+        {
+            // Save each PNG frame to a temporary directory
+            for (int i = 0; i < pngEncoders.Count; i++)
+            {
+                string framePath = Path.Combine(tempDirectory, $"frame_{i:D5}.png");
+
+                await Task.Run(() =>
+                {
+                    Application.Current.Dispatcher.Invoke(() =>
+                    {
+                        using (FileStream fs = new FileStream(framePath, FileMode.Create))
+                        {
+                            pngEncoders[i].Save(fs);
+                        }
+                    });
+                }).ConfigureAwait(false);
+            }
+
+            // Use FFmpeg to create a video from the PNG frames
+            string ffmpegPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg.exe"); // Assuming ffmpeg.exe is in the same directory as the application
+            if (!File.Exists(ffmpegPath))
+            {
+                throw new FileNotFoundException("FFmpeg executable not found.", ffmpegPath);
+            }
+
+            string framePattern = Path.Combine(tempDirectory, "frame_%05d.png").Replace("\\", "/"); // Replace backslashes with forward slashes for FFmpeg compatibility
+            string arguments = $"-framerate 30 -i \"{framePattern}\" -vf \"scale=640:480\" -c:v libx264 -pix_fmt yuv420p \"{outputPath}\"";
+
+            var processInfo = new System.Diagnostics.ProcessStartInfo
+            {
+                FileName = ffmpegPath,
+                Arguments = arguments,
+                RedirectStandardOutput = true,
+                RedirectStandardError = true,
+                UseShellExecute = false,
+                CreateNoWindow = true
+            };
+
+            using (var process = System.Diagnostics.Process.Start(processInfo))
+            {
+                string error = await process.StandardError.ReadToEndAsync().ConfigureAwait(false);
+                process.WaitForExit();
+
+                if (process.ExitCode != 0)
+                {
+                    throw new Exception($"FFmpeg error: {error}");
+                }
+            }
+
+            var dicName = Path.GetDirectoryName(outputPath);
+            var fileName = Path.GetFileNameWithoutExtension(outputPath);
+            Microsoft.VisualBasic.FileIO.FileSystem.RenameFile(outputPath, fileName + ".dat");
+        }
+        finally
+        {
+            // Clean up temporary frames
+            Directory.Delete(tempDirectory, true);
+        }
+    }
+    
     public static void ConvertMp4ToDat(string inputFilePath, string outputFilePath)
     {
         string ffmpegPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg.exe"); // Assuming ffmpeg.exe is in the same directory as the application

Views/UserControl/ViewportData/Helper/ViewportHelperPro.cs

@@ -174,7 +174,7 @@ public class ViewportHelperPro
         
         List<PngBitmapEncoder> pngList = await generationTask;
         
-         await VideoHelper.CreateVideoFromPngList(pngList, filePath); 
+         await VideoHelper.CreateVideoFromPngListAsync(pngList, filePath); 
     }
 
     /// <summary>

Views/UserControl/ViewportData/Helper/ViewportManager.cs

@@ -158,6 +158,7 @@ public class ViewportManager
 
         ViewportTriangle.Clear();
         ViewportTriangle.AddRange(entities);
+        _viewport.Items.Clear();
         MainModel3D = ViewportHelperPro.GenerateModelByEntity(_viewport, entities);
         MainModelLines = ViewportHelperPro.GentrateLineByEntity(_viewport, entities);
         MainModelLighting = ViewportHelperPro.GenerateLightingForModel(_viewport);