done for now

PgmCreatorDemo.cs

@@ -1,93 +0,0 @@
-using System;
-using System.IO;
-using System.Diagnostics;
-using Pgm;
-
-class PgmCreatorDemo {
-	
-	//TYPICAL USAGE OF THE PGMCREATOR CLASS:
-	static void MakeLenaBlackWhite() {
-		// for the specification of PGM-Files, see: http://netpbm.sourceforge.net/doc/pgm.html
-		
-		// A byte-array is used for storing the gray-color-values.
-		// The img has the size 256x256 pixel;
-		// Each pixel has a gray-color-value from 0-255 (0...black, 255...white).
-		// Note also that the FIRST dimension (row-index) corresponds
-		// to the x-Coordinate (!!!) in the image, the second dimension (col-index)
-		// to the y-coordinate (!!!). The y coordinate goes from up to down!
-		// Thus, an index of [50, 250] is at the left and bottom of the image.
-		// (The Write/ReadPGM-Methods internally transpose the matrix.)
-		
-		// Open Lena, make it black-white (threshold is the value 128), and save it:
-		try {
-			byte[,] lenaImgData = PgmCreator.ReadPgmFile("lena.pgm");
-			for (int x = 0; x < lenaImgData.GetLength(0); x++) {
-				for (int y = 0; y < lenaImgData.GetLength(1); y++) {
-					if (lenaImgData[x, y] < 128) lenaImgData[x, y] = 0;
-					else lenaImgData[x, y] = 255;
-				}
-			}
-			PgmCreator.WritePgmFile("lena_black_white.pgm", lenaImgData, PgmType.P5);
-		    Console.WriteLine("Success making Lena black-white!");
-		}
-		catch (FileNotFoundException e) {
-			Console.WriteLine("Where ist the file? " + e.Message);
-		}
-		catch (FormatException e) {
-			Console.WriteLine("Wrong file format: " + e.Message);
-		}
-		catch (Exception e) {
-			Console.WriteLine(e.Message);
-		}
-	}
-		
-	static void Main(string[] args) { 
-		TestBinaryAndASCIIFormat();
-		MakeLenaBlackWhite();
-	}
-	
-	//Helper Method which produces a byte-array representing a gradient image:
-    private static byte[,] ProduceGradientImage() {
-		byte[,] imgData = new byte[256, 256];
-
-        // fill the imgData-Array with the gray-color-values:
-        for (int y = 0; y < imgData.GetLength(1); y++) {
-            for (int x = 0; x < imgData.GetLength(0); x++) {
-                // produce a gray-color gradient image:
-				// top-left corner: black, bottom-right corner: white.
-				// Note that x and y go from 0 to 255, so x/2 + y/2 cannot exceed the value 254.
-				imgData[x, y] = (byte)(x / 2 + y / 2);
-            }
-        }
-		return imgData;
-	}
-	
-	//Tests whether both pgm file formats work:
-	private static void TestBinaryAndASCIIFormat() {
-		byte[,] imgData = ProduceGradientImage();
-	
-		byte[,] readDataAscii; 
-		byte[,] readDataBinary;
-		try {
-			// write imgData to P2 file (ascii):
-			PgmCreator.WritePgmFile("testASCII.pgm", imgData, PgmType.P2);
-			// read from P2 file (ascii): 
-			readDataAscii = PgmCreator.ReadPgmFile("testASCII.pgm");
-			// write image data to P5 file (binary): 
-			PgmCreator.WritePgmFile("testBinary.pgm", readDataAscii, PgmType.P5);
-			// read P5 file (binary):
-			readDataBinary = PgmCreator.ReadPgmFile("testBinary.pgm");
-			
-			 //check if the image loaded from the P2-type file (ascii) 
-			 //is the same as from the P5-type file (binary):
-			for (int y = 0; y < imgData.GetLength(1); y++) {
-				for (int x = 0; x < imgData.GetLength(0); x++) {
-					Debug.Assert(readDataAscii[x,y] == readDataBinary[x,y]);
-				}
-			}
-			Console.WriteLine("Success in testing two generated files of both types!");
-		} catch (Exception e) {
-			Console.WriteLine(e.Message);
-		}
-	}
-}

Program.cs

@@ -1,14 +1,111 @@
-using System;
+using Pgm;
+using System;
 using System.Collections.Generic;
-using System.Linq;
+using System.IO;
-using System.Text;
+using System.Drawing;
-using System.Threading.Tasks;
+using System.Drawing.Imaging;
 
 namespace task_78
 {
-    class Program
+    public class Program
     {
         static void Main(string[] args) {
+            Font inFont = readFont(Directory.GetCurrentDirectory() + "\\font.pgm");
+            if (inFont == null)
+                return;
+
+            writeFont(inFont, "font_print.bmp");
+            Console.ReadLine();
+        }
+
+        static Font readFont(string path) {
+           return new Font(PgmCreator.ReadPgmFile(path));
+        }
+
+        /// <summary>
+        /// Saves all Font.Char-Objects listed within the Font class into a new bmp file.
+        /// </summary>
+        /// <param name="font"></param>
+        /// <param name="path"></param>
+        static void writeFont(Font font, string path) {
+            // create a new bmp with with equal dimensions to the font's data array.
+            Bitmap bmp = new Bitmap(font.data.GetLength(0), font.data.GetLength(1));
+            // incrementor to not draw every character into the same spot.
+            int shift = 0;
+            // Iterate through all characters
+            foreach (Font.Char c in font.chars) {
+                for (int x = 0; x < c.w; x++) {
+                    for (int y = 0; y < c.h; y++) {
+                        // Print every single pixel of each character
+                        try {
+                            bmp.SetPixel(shift + x, y, Color.FromArgb(255, c.data[x, y], c.data[x, y], c.data[x, y]));
+                        } catch(Exception e) {
+                            Console.WriteLine(e.Message);
+                        }
+                    }
+                }
+                // Shift Char.Width pixels to the right + 1 Pixel for Seperation.
+                shift += c.w + 1;
+            }
+            bmp.Save(path);
+            Console.WriteLine("Bitmap saved!");
+        }
+    }
+
+    public class Font {
+        public byte[,] data { get; private set; }
+        public List<Char> chars { get; private set; }
+
+        public Font(byte[,] data) {
+            this.chars = new List<Char>();
+            this.data = data;
+            this.getCharacters();
+        }
+
+        /// <summary>
+        /// attempts to read all characters stored in the data[,] information by splitting all characters using the grayscale value of '150' as given in the task.
+        /// all readable characters will be stored in the chars-List<Char>
+        /// </summary>
+        private void getCharacters() {
+            int i = 0, count = 0;
+            // a new list, containing byte[]s to store the vertical row of pixels for each character
+            List<byte[]> strip = new List<byte[]>();
+            // clear the character list, just in case this font was already written before.
+            chars.Clear();
+            do {
+                // Do we have a seperating greyscale code?
+                if (data[i, 0] == 150 && i > 0) {
+                    // create a new 2 dimensional byte where we can temporarily write the character into
+                    byte[,] c = new byte[strip.Count, strip[0].Length];
+                    for (int j = 0; j < strip.Count; j++) {
+                        for (int k = 0; k < strip[0].Length; k++) {
+                            c[j, k] = strip[j][k];
+                        }
+                    }
+                    // increment the char counter
+                    count++;
+                    // add a new char struct to the list
+                    chars.Add(new Font.Char { key = "c_" + count, data = c, w = c.GetLength(0), h = c.GetLength(1) });
+                    // clear the strip storage for the next character
+                    strip.Clear();
+                    Console.WriteLine("Found Character " + count);
+                } else {
+                    // if no seperating color code was detected, we add another byte[] to the strip list
+                    byte[] s = new byte[data.GetLength(1)];
+                    for(int j = 0; j < s.Length; j++) {
+                        s[j] = data[i, j];
+                    }
+                    strip.Add(s);
+                }
+
+            } while (i++ < data.GetLength(0) - 1);
+        }
+
+        public struct Char
+        {
+            public string key;
+            public byte[,] data;
+            public int w, h;
         }
     }
 }

task_78.csproj

@@ -35,6 +35,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />
@@ -43,11 +44,16 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="PgmCreator.cs" />
+    <Compile Include="PgmCreatorDemo.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />
+    <None Include="font.pgm">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.