Initial commit

.gitignore

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+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+**/bin/**
+**/obj/**
+**/node_modules/**
+**/**.suo
+**/**.user

.idea/.idea.StitchATon/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Rider ignored files
+/.idea.StitchATon.iml
+/modules.xml
+/projectSettingsUpdater.xml
+/contentModel.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/.idea.StitchATon/.idea/encodings.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
+</project>

.idea/.idea.StitchATon/.idea/indexLayout.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>

.idea/.idea.StitchATon/.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

StitchATon.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WebApp", "WebApp\WebApp.csproj", "{C7ECADED-5C93-45BB-8F9F-27DCF06BAA59}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C7ECADED-5C93-45BB-8F9F-27DCF06BAA59}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C7ECADED-5C93-45BB-8F9F-27DCF06BAA59}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C7ECADED-5C93-45BB-8F9F-27DCF06BAA59}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C7ECADED-5C93-45BB-8F9F-27DCF06BAA59}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

WebApp/Coordinate.cs

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+namespace WebApp;
+
+internal record Coordinate
+{
+    public string Name { get; }
+    public int Row { get; }
+    public int Col { get; }
+    public string Path => PATH + Name + ".png";
+
+    private const string PATH = "D:/tiles1705/";
+
+    public Coordinate(string name)
+    {
+        Name = name;
+        int row = 0;
+        int col = 0;
+        foreach (var item in name)
+        {
+            if (item >= 'A')
+            {
+                row = row * 26 + (item - 'A' + 1);
+            }
+            else if (item >= '1')
+            {
+                col = col * 10 + (item - '1' + 1);
+            }
+        }
+
+        Row = row;
+        Col = col;
+    }
+
+    public Coordinate(int row, int col)
+    {
+        Row = row;
+        Col = col;
+        Name = Helper.ToLetters(row) + col;
+    }
+
+    public override string ToString()
+    {
+        return Name;
+    }
+}

WebApp/Helper.cs

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+namespace WebApp;
+
+public static class Helper
+{
+    public static string ToLetters(int number)
+    {
+        var result = "";
+        while (number > 0)
+        {
+            number--; // Adjust for 1-based indexing
+            char letter = (char)('A' + (number % 26));
+            result = letter + result;
+            number /= 26;
+        }
+        return result;
+    }
+}

WebApp/ImageGenerator.cs

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+using System.Collections.Concurrent;
+using OpenCvSharp;
+
+namespace WebApp;
+
+public class ImageGenerator
+{
+    private const string PATH = "D:/tiles1705/";
+    
+    public byte[] GenerateImage(RequestBody requestBody)
+    {
+        var start = DateTime.Now;
+        
+        string[] inputs = requestBody.CanvasRect.Split(":");
+        Coordinate coord0 = new Coordinate(inputs[0]);
+        Coordinate coord1 = new Coordinate(inputs[1]);
+        (var matrix, _, _) = GenerateDict(coord0, coord1);
+        
+        ConcurrentDictionary<int, Mat> rows = new();
+        Parallel.ForEach(matrix, pair =>
+        {
+            Mat row = new Mat();
+            List<Mat> mats = new();
+            foreach (var coord in pair.Value)
+            {
+                string fileName = PATH + coord.Name + ".png";
+                mats.Add(new Mat( fileName ) );
+            }
+
+            Cv2.HConcat(mats, row);
+            rows[pair.Key] = row;
+        });
+
+        Mat output = new Mat();
+        Cv2.VConcat(rows.Values, output);
+
+        var result = output.ImEncode();
+        var end = DateTime.Now;
+        var elapsed = end - start;
+        Console.WriteLine($"Elapsed: {elapsed.TotalMilliseconds} ms");
+        return result;
+    }
+
+    public byte[] GenerateImage2(RequestBody requestBody)
+    {
+        var start = DateTime.Now;
+        Coordinate a1 = new Coordinate("A1");
+        Mat a1Mat = new Mat(a1.Path);
+        
+        string[] inputs = requestBody.CanvasRect.Split(":");
+        Coordinate coord0 = new Coordinate(inputs[0]);
+        Coordinate coord1 = new Coordinate(inputs[1]);
+
+        double scale = requestBody.OutputScale;
+
+        (var matrix, int rowCount, int colCount) = GenerateMatrix(coord0, coord1);
+        Mat temp = GenerateTempMat(a1Mat, rowCount, colCount);
+
+        Parallel.ForEach(matrix, item =>
+        {
+            Mat mat = new Mat(item.Path);
+            Rect rect = new Rect((item.Col - 1) * a1Mat.Cols, (item.Row - 1) * a1Mat.Rows, a1Mat.Cols, a1Mat.Rows);
+            mat.CopyTo(temp[rect]);
+        });
+
+        double newWidth = temp.Width * scale;
+        double newHeight = temp.Height * scale;
+
+        temp.Resize(new Size(newWidth, newHeight));
+        var result = temp.ImEncode();
+        var end = DateTime.Now;
+        var elapsed = end - start;
+        Console.WriteLine($"Elapsed: {elapsed.TotalMilliseconds} ms");
+        return result;
+    }
+
+    internal (List<Coordinate> Matrix, int RowCount, int ColCount) GenerateMatrix(Coordinate coordinate1, Coordinate coordinate2)
+    {
+        int minRow = Math.Min(coordinate1.Row, coordinate2.Row);
+        int maxRow = Math.Max(coordinate1.Row, coordinate2.Row);
+        int minCol = Math.Min(coordinate1.Col, coordinate2.Col);
+        int maxCol = Math.Max(coordinate1.Col, coordinate2.Col);
+
+        int rowCount = maxRow - minRow + 1;
+        int colCount = maxCol - minCol + 1;
+        
+        // Initialize collections
+        List<Coordinate> results = new List<Coordinate>(rowCount*colCount);
+        for (int i = 1; i <= rowCount; i++)
+        {
+            for (int j = 1; j <= colCount; j++)
+            {
+                results.Add(new Coordinate(i,j));
+            }
+        }
+
+        return (results, rowCount, colCount);
+    }
+
+    internal (ConcurrentDictionary<int,List<Coordinate>> Matrix, int RowCount, int ColCount) GenerateDict(Coordinate coordinate1, Coordinate coordinate2)
+    {
+        ConcurrentDictionary<int,List<Coordinate>> results = new();
+        int minRow = Math.Min(coordinate1.Row, coordinate2.Row);
+        int maxRow = Math.Max(coordinate1.Row, coordinate2.Row);
+        int minCol = Math.Min(coordinate1.Col, coordinate2.Col);
+        int maxCol = Math.Max(coordinate1.Col, coordinate2.Col);
+
+        int rowCount = maxRow - minRow + 1;
+        int colCount = maxCol - minCol + 1;
+        
+        for (int i = 0; i < rowCount; i++)
+        {
+            List<Coordinate> result = new();
+            for (int j = 0; j < colCount; j++)
+            {
+                int row = minRow + i;
+                int col = minCol + j;
+               result.Add(new Coordinate(row, col));
+            }
+            results[i] = result;
+        }
+
+        return (results, rowCount, colCount);
+    }
+
+    internal Mat GenerateTempMat(Mat reference, int rowCount, int colCount)
+    {
+        return new Mat(reference.Rows * rowCount, reference.Cols * colCount, reference.Type());
+    }
+}

WebApp/Program.cs

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+
+using Microsoft.OpenApi.Models;
+using WebApp;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+// Configure the HTTP request pipeline.
+if (builder.Environment.IsDevelopment())
+{
+    builder.Services.AddSwaggerGen(c =>
+    {
+        c.SwaggerDoc("v1", new OpenApiInfo { Title = "Stitch a Ton", Description = "Meizar's stitch a ton solution", Version = "v1" });
+    });
+}
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI(c =>
+    {
+        c.SwaggerEndpoint("/swagger/v1/swagger.json", "Stitch a Ton");
+    });
+}
+
+app.UseHttpsRedirection();
+
+app.MapPost("/api/image/generate",
+    ( RequestBody requestBody ) =>
+{
+    ImageGenerator imageGenerator = new ImageGenerator();
+    var png = imageGenerator.GenerateImage2( requestBody );
+    return Results.File(png, "image/png", "result.png");
+})
+    .WithName("ImageGenerator")
+    .Produces(StatusCodes.Status200OK, contentType:"image/png");
+
+app.Run();

WebApp/Properties/launchSettings.json

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+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:47070",
+      "sslPort": 44330
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "http://localhost:5184",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7224;http://localhost:5184",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

WebApp/RequestBody.cs

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+using System.Text.Json.Serialization;
+
+namespace WebApp;
+
+public record struct RequestBody(
+    [property: JsonPropertyName("canvas_rect")]
+    string CanvasRect,
+    [property: JsonPropertyName("output_scale")]
+    double OutputScale );

WebApp/WebApp.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+    <PropertyGroup>
+        <TargetFramework>net6.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <RootNamespace>WebApp</RootNamespace>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="OpenCvSharp4" Version="4.11.0.20250507" />
+        <PackageReference Include="OpenCvSharp4.runtime.win" Version="4.11.0.20250507" />
+        <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
+    </ItemGroup>
+
+</Project>

WebApp/WebApplication.http

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+@WebApplication_HostAddress = http://localhost:5184
+
+GET {{WebApplication_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###

WebApp/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

WebApp/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

global.json

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+{
+  "sdk": {
+    "version": "6.0.0",
+    "rollForward": "latestMajor",
+    "allowPrerelease": true
+  }
+}