Worked on map viewer

Tools/MapViewer/MapViewer/Business/MapRenderer.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using TransportGame.Model;
+
+namespace TransportGame.MapViewer
+{
+    public class MapRenderer
+    {
+        [Flags]
+        public enum Layers
+        {
+            None = 0,
+            Elevation = 1,
+            All = Elevation 
+        };
+
+        /// <summary>
+        /// Gets or sets the scale
+        /// </summary>
+        private int _scale;
+        public int Scale
+        {
+            get
+            {
+                return _scale;
+            }
+            set
+            {
+                lock (this)
+                {
+                    _scale = value;
+                }
+            }
+        }
+
+        private readonly Color WaterColor = Colors.Navy;
+        private readonly Color ElevationTerrainColor = Colors.White;
+        private readonly Color TerrainColor = Colors.White;
+
+        public MapRenderer()
+        {
+            Scale = 4;
+        }
+
+        ///<summary>
+        ///Renders a map to a file
+        ///</summary>
+        ///<param name="file"></param>
+        ///<param name="map"></param>
+        ///<param name="layers"></param>
+        public Color[,] Render(Map map, Layers layers = Layers.All)
+        {
+            lock (this)
+            {
+                // Create texture on which to draw
+                Color[,] pixels = new Color[map.Width * Scale, map.Height * Scale];
+
+                // First layer - cells
+                DrawCells(pixels, map, (layers & Layers.Elevation) > 0);
+
+                // Done
+                return pixels;
+            }
+        }
+
+        private void DrawCells(Color[,] pixels, Map map, bool elevation)
+        {
+            for (int x = 0; x < pixels.GetLength(0); x++)
+                for (int y = 0; y < pixels.GetLength(1); y++)
+                {
+                    int mapX = x / Scale;
+                    int mapY = y / Scale;
+
+                    // Draw water
+                    if (map.IsWater(mapX, mapY))
+                        pixels[x, y] = WaterColor;
+
+                    // Draw elevation
+                    else if (elevation)
+                    {
+                        float alpha = (map[mapX, mapY] - map.Biome.HeightRange.Minimum) / (map.Biome.HeightRange.Maximum - map.Biome.HeightRange.Minimum);
+                        pixels[x, y] = Color.Multiply(ElevationTerrainColor, alpha);
+                    }
+
+                    // Draw terrain
+                    else
+                    {
+                        pixels[x, y] = TerrainColor;
+                    }
+                }
+        }
+
+        public async Task<BitmapSource> RenderToImageSource(Map map, Layers layers = Layers.All)
+        {
+            var colors = await Task.Run(() => Render(map, layers));
+            colors[0, 0] = Colors.Red;
+            colors[colors.GetLength(0) - 1, 0] = Colors.Red;
+
+            // Convert to raw pixels
+            byte[] raw = new byte[colors.GetLength(0) * colors.GetLength(1) * 3];
+
+            for (int x = 0; x < colors.GetLength(0); x++)
+                for (int y = 0; y < colors.GetLength(1); y++)
+                {
+                    int pixelIndex = x + y * colors.GetLength(0);
+
+                    raw[3 * pixelIndex] = colors[x, y].R;
+                    raw[3 * pixelIndex + 1] = colors[x, y].G;
+                    raw[3 * pixelIndex + 2] = colors[x, y].B;
+                }
+
+            // Create bitmap source
+            BitmapSource bmp = BitmapSource.Create(colors.GetLength(0), colors.GetLength(1), 
+                96, 96, PixelFormats.Rgb24, null, raw, colors.GetLength(0) * 3);
+
+            return bmp;
+        }
+    }
+}