Draw number on pixels

LegoArt/MainWindow.xaml.cs

@@ -61,7 +61,7 @@ namespace LegoArt
                 var sourceBitmap = bitmapHelperService.Scale(reducedBitMap, 1);
                 sourceImage.Source = imageHelperService.LoadToImage(sourceBitmap);
 
-                var convertedBitmap = bitmapHelperService.ConvertToPixelMatrix(sourceBitmap, 20);
+                var convertedBitmap = bitmapHelperService.ConvertToPixelMatrix(sourceBitmap, legoArtColorService.GetLegoColors());
                 scaledImage.Source = imageHelperService.LoadToImage(convertedBitmap);
 
                 parentStackPanel.Children.Clear();

LegoArtTool/BitmapHelperService.cs

@@ -1,4 +1,5 @@
 using LegoArtTool.Pixels;
+using System.Collections.Generic;
 using System.Drawing;
 
 namespace LegoArtTool
@@ -29,9 +30,9 @@ namespace LegoArtTool
             return scaledBitmap;
         }
 
-        public Bitmap ConvertToPixelMatrix(Bitmap bitmap, int pixelSize)
+        public Bitmap ConvertToPixelMatrix(Bitmap bitmap, List<LegoArtColorInfo> legoArtColors)
         {
-            var pixelMatrix = new PixelMatrix(pixelSize, bitmap);
+            var pixelMatrix = new PixelMatrix(bitmap, legoArtColors);
             return pixelMatrix.ConvertBitmap();
         }
     }

LegoArtTool/LegoArtImageGenerationService.cs

@@ -67,7 +67,7 @@ namespace LegoArtTool
             int xPosition,
             int yPosition)
         {
-            var legoArtColorOffsets = legoArtColorInfos.Select(i => ColorOffset(inputColor, i)).ToList();
+            var legoArtColorOffsets = legoArtColorInfos.Select(i => ColourDistance(inputColor, i)).ToList();
             return new Pixel(xPosition, yPosition, legoArtColorOffsets);
         }
         

LegoArtTool/Pixels/GraphicExtensions.cs

@@ -0,0 +1,42 @@
+using System.Drawing;
+using System.Drawing.Drawing2D;
+
+namespace LegoArtTool.Pixels
+{
+    public static class GraphicsExtensions
+    {
+        public static void DrawCircle(this Graphics g, Pen pen, float centerX, float centerY, float radius)
+        {
+            g.DrawEllipse(pen, centerX - radius, centerY - radius, radius + radius, radius + radius);
+        }
+
+        public static void FillCircle(this Graphics g, Brush brush, float centerX, float centerY, float radius)
+        {
+            g.FillEllipse(brush, centerX - radius, centerY - radius, radius + radius, radius + radius);
+        }
+
+        public static void DrawText(this Graphics g, Brush brush, Font font, int size, StringAlignment alignment, string text)
+        {
+            var format = new StringFormat();
+            format.LineAlignment = alignment;
+            format.Alignment = alignment;
+
+            var rectf = new RectangleF(0, 0, size, size);
+            g.SmoothingMode = SmoothingMode.AntiAlias;
+            g.InterpolationMode = InterpolationMode.HighQualityBicubic;
+            g.PixelOffsetMode = PixelOffsetMode.HighQuality;
+            g.DrawString(text, font, brush, rectf, format);
+        }
+
+        public static Font GetIdealFontSize(this Graphics g, int size, string referenceText, Font preferedFont)
+        {
+            var room = new Size(size, size);
+            var realSize = g.MeasureString(referenceText, preferedFont);
+            var heightScaleRatio = room.Height / realSize.Height;
+            var widthScaleRatio = room.Width / realSize.Width;
+            var scaleRatio = (heightScaleRatio < widthScaleRatio) ? heightScaleRatio : widthScaleRatio;
+            var scaleFontSize = preferedFont.Size * scaleRatio;
+            return new Font(preferedFont.FontFamily, scaleFontSize);
+        }
+    }
+}

LegoArtTool/Pixels/Pixel.cs

@@ -6,27 +6,42 @@ namespace LegoArtTool.Pixels
     { 
         public Color Color { get; private set; }
         public int Number { get; private set; }
-        public int Size { get; private set; }
 
-        public Pixel(Color color, int size, int number)
+        public const int PixelSize = 50;
+        private const int NumberSize = 20;
+
+        public Pixel(Color color, int number)
         {
             Color = color;
-            Size = size;
             Number = number;
         }
 
         public Bitmap GetBitmap()
         {
-            var bitmap = new Bitmap(Size, Size);
+            var bitmap = new Bitmap(PixelSize, PixelSize);
-            for (int x = 0; x < Size; x++)
+            for (int x = 0; x < PixelSize; x++)
             {
-                for (int y = 0; y < Size; y++)
+                for (int y = 0; y < PixelSize; y++)
                 {
                     bitmap.SetPixel(x, y, Color);
                 }
             }
 
+            DrawNumber(bitmap, Number);
+
             return bitmap;
         }
+
+        private void DrawNumber(Bitmap bitmap, int number)
+        {
+
+            using (var g = Graphics.FromImage(bitmap))
+            {
+                g.FillCircle(Brushes.White, PixelSize / 2, PixelSize / 2, NumberSize / 2);
+                var font = g.GetIdealFontSize(NumberSize, "15", new Font("Arial", 8));
+                g.DrawText(Brushes.Black, font, PixelSize, StringAlignment.Center, number.ToString());
+                g.Flush();
+            }
+        }
     }
 }

LegoArtTool/Pixels/PixelMatrix.cs

@@ -1,5 +1,7 @@
 using System;
+using System.Collections.Generic;
 using System.Drawing;
+using System.Linq;
 
 namespace LegoArtTool.Pixels
 {
@@ -7,14 +9,12 @@ namespace LegoArtTool.Pixels
     {
         public Pixel[,] Pixels { get; private set; }
         public int MatrixSize { get; private set; }
-        public int PixelSize { get; private set; }
 
         private Random rnd = new Random();
 
-        public PixelMatrix(int pixelSize, Bitmap sourceBitmap)
+        public PixelMatrix(Bitmap sourceBitmap, List<LegoArtColorInfo> legoArtColors)
         {
             MatrixSize = sourceBitmap.Width;
-            PixelSize = pixelSize;
             Pixels = new Pixel[MatrixSize, MatrixSize];
 
             for (int x = 0; x < MatrixSize; x++)
@@ -23,14 +23,15 @@ namespace LegoArtTool.Pixels
                 {
                     var pixel = sourceBitmap.GetPixel(x, y);
                     var sourceColor = Color.FromArgb(pixel.ToArgb());
-                    Pixels[x, y] = new Pixel(sourceColor, PixelSize, 9);
+                    var legoNumber = legoArtColors.Single(l => l.Color == sourceColor).LegoNumber;
+                    Pixels[x, y] = new Pixel(sourceColor, legoNumber);
                 }
             }
         }
 
         public Bitmap ConvertBitmap()
         {
-            var bitmapSize = MatrixSize * PixelSize;
+            var bitmapSize = MatrixSize * Pixel.PixelSize;
             var bitmap = new Bitmap(bitmapSize, bitmapSize);
             using (var g = Graphics.FromImage(bitmap))
             {