scale before stitch

StitchATon.sln.DotSettings

@@ -0,0 +1,3 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:String x:Key="/Default/Environment/Hierarchy/Build/BuildTool/CustomBuildToolPath/@EntryValue">C:\Program Files\dotnet\sdk\6.0.407\MSBuild.dll</s:String>
+	<s:Int64 x:Key="/Default/Environment/Hierarchy/Build/BuildTool/MsbuildVersion/@EntryValue">4294967294</s:Int64></wpf:ResourceDictionary>

WebApp/Coordinate.cs

@@ -20,9 +20,9 @@ internal record Coordinate
             {
                 row = row * 26 + (item - 'A' + 1);
             }
-            else if (item >= '1')
+            else if (item >= '0')
             {
-                col = col * 10 + (item - '1' + 1);
+                col = col * 10 + (item - '0' + 1);
             }
         }
 

WebApp/ImageGenerator.cs

@@ -66,7 +66,47 @@ public class ImageGenerator
         double newWidth = temp.Width * scale;
         double newHeight = temp.Height * scale;
 
-        temp.Resize(new Size(newWidth, newHeight));
+        var resized = temp.Resize(new Size(newWidth, newHeight));
+        var result = resized.ImEncode();
+        var end = DateTime.Now;
+        var elapsed = end - start;
+        Console.WriteLine($"Elapsed: {elapsed.TotalMilliseconds} ms");
+        return result;
+    }
+    
+    public byte[] GenerateImage3(RequestBody requestBody)
+    {
+        var start = DateTime.Now;
+        string[] inputs = requestBody.CanvasRect.Split(":");
+        double scale = requestBody.OutputScale;
+        Coordinate a1 = new Coordinate("A1");
+        Mat a1Mat = new Mat(a1.Path);
+        int width = a1Mat.Width;
+        int height = a1Mat.Height;
+        if (scale < 1)
+        {
+            width = (int)(width * scale);
+            height = (int)(height * scale);
+            a1Mat = a1Mat.Resize(new Size(width, height));
+        }
+        
+        Coordinate coord0 = new Coordinate(inputs[0]);
+        Coordinate coord1 = new Coordinate(inputs[1]);
+
+        (var matrix, int rowCount, int colCount) = GenerateMatrix(coord0, coord1);
+        Mat temp = GenerateTempMat(a1Mat, rowCount, colCount);
+
+        Parallel.ForEach(matrix, item =>
+        {
+            Mat mat = new Mat(item.Path);
+            if (scale < 1)
+            {
+                mat = mat.Resize(new Size(width, height));
+            }
+            Rect rect = new Rect((item.Col - 1) * a1Mat.Cols, (item.Row - 1) * a1Mat.Rows, a1Mat.Cols, a1Mat.Rows);
+            mat.CopyTo(temp[rect]);
+        });
+
         var result = temp.ImEncode();
         var end = DateTime.Now;
         var elapsed = end - start;

WebApp/Program.cs

@@ -35,7 +35,7 @@ app.MapPost("/api/image/generate",
     ( RequestBody requestBody ) =>
 {
     ImageGenerator imageGenerator = new ImageGenerator();
-    var png = imageGenerator.GenerateImage2( requestBody );
+    var png = imageGenerator.GenerateImage3( requestBody );
     return Results.File(png, "image/png", "result.png");
 })
     .WithName("ImageGenerator")