Reverted uint to int in options

src/MainAppService.cs

@@ -68,10 +68,10 @@ public Task StartAsync(CancellationToken cancellationToken)
         var (Columns, Rows) = options.GetNumOfColumnsAndRows(stitchCountPerImage);
         var processOptions = new ImageProcessOptions 
         {
-            Rotate = (int) options.Rotation,
+            Rotate = options.Rotation,
             Scale = options.Scale,
             SavedImageExtension = options.Encoding,
-            BorderSize = (int) options.BorderSize,
+            BorderSize = options.BorderSize,
             Columns = Columns,
             Rows = Rows
         };

src/Options/AppOptions.cs

@@ -8,7 +8,7 @@ class AppOptions
     public IEnumerable<string>? Files { get; set; }
 
     [Option('i', "input", Required = true, SetName = "allFilesFromDir", HelpText = "Input directory. The directory where images to stitch will be searched for. Stitch order method can be changed with -m.")]
-    public string? InputPath { get; set; }
+    public string? InputPath { get; set; } = null;
 
     [Option('t', "take", Required = false, HelpText = "Supply the number of images to be stitched together. When not set, all input images will be stitched into one image. Value should be at least 2.")]
     public uint? TakeImageCount { get; set; } = null;
@@ -23,19 +23,19 @@ class AppOptions
     public string Encoding { get; set; } = "jpg";
 
     [Option('r', "rotate", Required = false, HelpText = "Rotate the images N degrees.", Default = 0)]
-    public uint Rotation { get; set; } = 0;
+    public int Rotation { get; set; } = 0;
 
     [Option('s', "scale", Required = false, HelpText = "Scale the final image. Ex.: 0.5 to scale down 50% or 1.5 to scale up 150%.", Default = 1.0f)]
     public float Scale { get; set; } = 1.0f; 
 
     [Option('b', "borderSize", Required = false, HelpText = "Add a border around the stitched images. Value in pixels.", Default = 0)]
-    public uint BorderSize { get; set; } = 0; 
+    public int BorderSize { get; set; } = 0; 
 
     [Option('w', "gridWidth", Required = false, HelpText = "Number of images to stack vertically (columns). Leave 0 for best guess.", Default = 0)]
-    public uint Width { get; set; } = 0;
+    public int Width { get; set; } = 0;
 
     [Option('h', "gridHeight", Required = false, HelpText = "Number of images to stack horizontally (rows). Leave 0 for best guess.", Default = 0)]
-    public uint Height { get; set; } = 0;
+    public int Height { get; set; } = 0;
 
     [Option("wh", Required = false, HelpText = "Alternative way to supply width and height of grid. Format: WxH Ex.: 2x1")]
     public string? WidthHeight { get; set; } = null;

src/Options/AppOptionsValidator.cs

@@ -14,10 +14,12 @@ public static bool ValidateOptions(AppOptions appOptions, ILogger logger, int im
             errors.Add("An input path must be provided. Either provide at least two input images or an input directory.");
         if (imageCount == 1)
             errors.Add("Image count should be larger than 1.");
-        if (appOptions.Rotation > 359)
+        if (appOptions.Rotation < 0 || appOptions.Rotation > 359)
             errors.Add("Rotation should be between 0 and 359.");
         if (appOptions.Scale < 0.1f || appOptions.Scale > 2.0f)
             errors.Add("Scale should be between 0.1 and 2.0.");
+        if (appOptions.BorderSize < 0)
+            errors.Add("Border size should be 0 or larger.");
         if (wXh.Rows < 1)
             errors.Add("Height should be at least 1.");
         if (wXh.Columns < 1)