Added rotate method.

Former-commit-id: 2c3f1b222b25ebe8f54973e4507fa3e9118ae839

src/ImageProcessor/ImageFactory.cs

@@ -309,6 +309,25 @@ namespace ImageProcessor
             return this;
         }
 
+        /// <summary>
+        /// Rotates the current image by the given angle.
+        /// </summary>
+        /// <param name="angle">The angle by which to rotate the image.</param>
+        /// <returns>
+        /// The current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public ImageFactory Rotate(int angle)
+        {
+            if (this.ShouldProcess)
+            {
+                Rotate rotate = new Rotate { DynamicParameter = angle };
+
+                this.Image = rotate.ProcessImage(this);
+            }
+
+            return this;
+        }
+
         /// <summary>
         /// Adds a vignette image effect to the current image.
         /// </summary>

src/ImageProcessor/ImageProcessor.csproj

@@ -60,12 +60,25 @@
     <Compile Include="Helpers\Extensions\EnumExtensions.cs" />
     <Compile Include="Helpers\Extensions\StringExtensions.cs" />
     <Compile Include="ImageFactory.cs" />
+    <Compile Include="Imaging\Filters\BlackWhiteMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\ColorMatrixes.cs" />
+    <Compile Include="Imaging\Filters\ComicMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\LoSatchMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\HiSatchMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\InvertMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\GothamMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\GreyScaleMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\LomographMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\PolaroidMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\SepiaMatrixFilter.cs" />
+    <Compile Include="Imaging\Filters\IMatrixFilter.cs" />
     <Compile Include="Imaging\ImageUtils.cs" />
     <Compile Include="Imaging\OctreeQuantizer.cs" />
     <Compile Include="Imaging\Quantizer.cs" />
     <Compile Include="Imaging\ResponseType.cs" />
     <Compile Include="Imaging\TextLayer.cs" />
     <Compile Include="Processors\Alpha.cs" />
+    <Compile Include="Processors\Rotate.cs" />
     <Compile Include="Processors\Crop.cs" />
     <Compile Include="Processors\Filter.cs" />
     <Compile Include="Processors\IGraphicsProcessor.cs" />

src/ImageProcessor/Imaging/Filters/BlackWhiteMatrixFilter.cs

@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------
+// <copyright file="BlackWhiteMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a black and white filter to an image.
+    /// </summary>
+    class BlackWhiteMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.BlackWhite; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/ColorMatrixes.cs

@@ -0,0 +1,193 @@
+// -----------------------------------------------------------------------
+// <copyright file="ColorMatrixes.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing.Imaging; 
+    #endregion
+
+    /// <summary>
+    /// A list of available color matrices to apply to an image.
+    /// </summary>
+    internal static class ColorMatrixes
+    {
+        /// <summary>
+        /// Gets Sepia.
+        /// </summary>
+        internal static ColorMatrix Sepia
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { .393f, .349f, .272f, 0, 0 }, 
+                                new float[] { .769f, .686f, .534f, 0, 0 },
+                                new float[] { .189f, .168f, .131f, 0, 0 },
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0, 0, 0, 0, 1 }
+                          });
+            }
+        }
+
+        /// <summary>
+        /// Gets BlackWhite.
+        /// </summary>
+        internal static ColorMatrix BlackWhite
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 }, 
+                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 },
+                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 },
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { -1, -1, -1, 0, 1 }
+                          });
+            }
+        }
+
+        /// <summary>
+        /// Gets Polaroid.
+        /// </summary>
+        internal static ColorMatrix Polaroid
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { 1.638f, -0.062f, -0.262f, 0, 0 },
+                                new float[] { -0.122f, 1.378f, -0.122f, 0, 0 },
+                                new float[] { 1.016f, -0.016f, 1.383f, 0, 0 },
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0.06f, -0.05f, -0.05f, 0, 1 }
+                          });
+            }
+        }
+
+        /// <summary>
+        /// Gets Lomograph.
+        /// </summary>
+        internal static ColorMatrix Lomograph
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { 1.50f, 0, 0, 0, 0 }, 
+                                new float[] { 0, 1.45f, 0, 0, 0 },
+                                new float[] { 0, 0, 1.09f, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { -0.10f, 0.05f, -0.08f, 0, 1 }
+                            });
+            }
+        }
+
+        /// <summary>
+        /// Gets GreyScale.
+        /// </summary>
+        internal static ColorMatrix GreyScale
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { .33f, .33f, .33f, 0, 0 }, 
+                                new float[] { .59f, .59f, .59f, 0, 0 },
+                                new float[] { .11f, .11f, .11f, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0, 0, 0, 0, 1 }
+                            });
+            }
+        }
+
+        /// <summary>
+        /// Gets Gotham.
+        /// </summary>
+        internal static ColorMatrix Gotham
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { .9f, .9f, .9f, 0, 0 }, 
+                                new float[] { .9f, .9f, .9f, 0, 0 }, 
+                                new float[] { .9f, .9f, .9f, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { -.5f, -.5f, -.45f, 0, 1 }
+                            });
+            }
+        }
+
+        /// <summary>
+        /// Gets Invert.
+        /// </summary>
+        internal static ColorMatrix Invert
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { -1, 0, 0, 0, 0 }, 
+                                new float[] { 0, -1, 0, 0, 0 },  
+                                new float[] { 0, 0, -1, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 1, 1, 1, 0, 1 }
+                            });
+            }
+        }
+
+        /// <summary>
+        /// Gets HiSatch.
+        /// </summary>
+        internal static ColorMatrix HiSatch
+        {
+            get
+            {
+                return new ColorMatrix(
+                    new float[][]
+                            {
+                                new float[] { 3, -1, -1, 0, 0 }, 
+                                new float[] { -1, 3, -1, 0, 0 },  
+                                new float[] { -1, -1, 3, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0, 0, 0, 0, 1 }
+                            });
+            }
+        }
+
+        /// <summary>
+        /// Gets LoSatch.
+        /// </summary>
+        internal static ColorMatrix LoSatch
+        {
+            get
+            {
+                return new ColorMatrix(
+                       new float[][]
+                            {
+                                new float[] { 1, 0, 0, 0, 0 }, 
+                                new float[] { 0, 1, 0, 0, 0 },  
+                                new float[] { 0, 0, 1, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { .25f, .25f, .25f, 0, 1 }
+                            });
+            }
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/ComicMatrixFilter.cs

@@ -0,0 +1,222 @@
+// -----------------------------------------------------------------------
+// <copyright file="ComicMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using System.Drawing.Drawing2D;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a comic filter to an image.
+    /// </summary>
+    class ComicMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Enumurates Argb colour channels.
+        /// </summary>
+        private enum ChannelArgb
+        {
+            /// <summary>
+            /// The blue channel
+            /// </summary>
+            Blue = 0,
+
+            /// <summary>
+            /// The green channel
+            /// </summary>
+            Green = 1,
+
+            /// <summary>
+            /// The red channel
+            /// </summary>
+            Red = 2,
+
+            /// <summary>
+            /// The alpha channel
+            /// </summary>
+            Alpha = 3
+        }
+
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.LoSatch; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            // Bitmaps for comic pattern
+            Bitmap hisatchBitmap = null;
+            Bitmap patternBitmap = null;
+
+            try
+            {
+                using (Graphics graphics = Graphics.FromImage(newImage))
+                {
+                    using (ImageAttributes attributes = new ImageAttributes())
+                    {
+                        attributes.SetColorMatrix(this.Matrix);
+
+                        Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                        // Set the attributes to LoSatch and draw the image.
+                        graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+
+                        // Create a bitmap for overlaying.
+                        hisatchBitmap = new Bitmap(rectangle.Width, rectangle.Height, PixelFormat.Format32bppPArgb);
+
+                        // Set the color matrix
+                        attributes.SetColorMatrix(ColorMatrixes.HiSatch);
+
+                        // Draw the image with the hisatch colormatrix.
+                        using (var g = Graphics.FromImage(hisatchBitmap))
+                        {
+                            g.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                        }
+
+                        // We need to create a new image now with the hi saturation colormatrix and a pattern mask to paint it
+                        // onto the other image with.
+                        patternBitmap = new Bitmap(rectangle.Width, rectangle.Height, PixelFormat.Format32bppPArgb);
+
+                        // Create the pattern mask.
+                        using (var g = Graphics.FromImage(patternBitmap))
+                        {
+                            g.Clear(Color.Black);
+                            g.SmoothingMode = SmoothingMode.HighQuality;
+                            for (var y = 0; y < image.Height; y += 10)
+                            {
+                                for (var x = 0; x < image.Width; x += 6)
+                                {
+                                    g.FillEllipse(Brushes.White, x, y, 4, 4);
+                                    g.FillEllipse(Brushes.White, x + 3, y + 5, 4, 4);
+                                }
+                            }
+                        }
+
+                        // Transfer the alpha channel from the mask to the hi sturation image.
+                        TransferOneArgbChannelFromOneBitmapToAnother(patternBitmap, hisatchBitmap, ChannelArgb.Blue, ChannelArgb.Alpha);
+
+                        // Overlay the image.
+                        graphics.DrawImage(hisatchBitmap, 0, 0);
+
+                        // Dispose of the other images
+                        hisatchBitmap.Dispose();
+                        patternBitmap.Dispose();
+                    }
+                }
+
+                // Reassign the image.
+                image.Dispose();
+                image = newImage;
+            }
+            catch
+            {
+                if (newImage != null)
+                {
+                    newImage.Dispose();
+                }
+
+                if (hisatchBitmap != null)
+                {
+                    hisatchBitmap.Dispose();
+                }
+
+                if (patternBitmap != null)
+                {
+                    patternBitmap.Dispose();
+                }
+            }
+            return image;
+        }
+
+        /// <summary>
+        /// Transfers a single ARGB channel from one image to another.
+        /// </summary>
+        /// <param name="source">
+        /// The source.
+        /// </param>
+        /// <param name="destination">
+        /// The destination.
+        /// </param>
+        /// <param name="sourceChannel">
+        /// The source channel.
+        /// </param>
+        /// <param name="destinationChannel">
+        /// The destination channel.
+        /// </param>
+        private static void TransferOneArgbChannelFromOneBitmapToAnother(Bitmap source, Bitmap destination, ChannelArgb sourceChannel, ChannelArgb destinationChannel)
+        {
+            if (source.Size != destination.Size)
+            {
+                throw new ArgumentException();
+            }
+
+            Rectangle rectangle = new Rectangle(Point.Empty, source.Size);
+
+            // Lockbits the source.
+            BitmapData bitmapDataSource = source.LockBits(rectangle, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
+
+            // Declare an array to hold the bytes of the bitmap.
+            int bytes = bitmapDataSource.Stride * bitmapDataSource.Height;
+
+            // Allocate a buffer for the source image
+            byte[] sourceRgbValues = new byte[bytes];
+
+            // Copy the RGB values into the array.
+            System.Runtime.InteropServices.Marshal.Copy(bitmapDataSource.Scan0, sourceRgbValues, 0, bytes);
+
+            // Unlockbits the source.
+            source.UnlockBits(bitmapDataSource);
+
+            // Lockbits the destination.
+            BitmapData bitmapDataDestination = destination.LockBits(rectangle, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
+
+            // Allocate a buffer for image
+            byte[] destinationRgbValues = new byte[bytes];
+
+            // Copy the RGB values into the array.
+            System.Runtime.InteropServices.Marshal.Copy(bitmapDataDestination.Scan0, destinationRgbValues, 0, bytes);
+
+            int s = (int)sourceChannel;
+            int d = (int)destinationChannel;
+
+            for (int i = rectangle.Height * rectangle.Width; i > 0; i--)
+            {
+                destinationRgbValues[d] = sourceRgbValues[s];
+                d += 4;
+                s += 4;
+            }
+
+            // Copy the RGB values back to the bitmap
+            System.Runtime.InteropServices.Marshal.Copy(destinationRgbValues, 0, bitmapDataDestination.Scan0, bytes);
+
+            // Unlock bits the destination.
+            destination.UnlockBits(bitmapDataDestination);
+        }
+
+    }
+}

src/ImageProcessor/Imaging/Filters/GothamMatrixFilter.cs

@@ -0,0 +1,85 @@
+// -----------------------------------------------------------------------
+// <copyright file="GothamMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using System.Drawing.Drawing2D;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a gotham filter to an image.
+    /// </summary>
+    class GothamMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.Gotham; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+
+                    // Overlay the image with some semi-transparent colors to finish the effect.
+                    using (GraphicsPath path = new GraphicsPath())
+                    {
+                        path.AddRectangle(rectangle);
+
+                        // Paint a burgundy rectangle with a transparency of ~30% over the image.
+                        // Paint a blue rectangle with a transparency of 20% over the image.
+                        using (SolidBrush brush = new SolidBrush(Color.FromArgb(77, 43, 4, 18)))
+                        {
+                            Region oldClip = graphics.Clip;
+                            graphics.Clip = new Region(rectangle);
+                            graphics.FillRectangle(brush, rectangle);
+
+                            // Fill the blue.
+                            brush.Color = Color.FromArgb(51, 12, 22, 88);
+                            graphics.FillRectangle(brush, rectangle);
+                            graphics.Clip = oldClip;
+                        }
+                    }
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/GreyScaleMatrixFilter.cs

@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------
+// <copyright file="GreyScaleMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a greyscale filter to an image.
+    /// </summary>
+    class GreyScaleMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.GreyScale; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/HiSatchMatrixFilter.cs

@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------
+// <copyright file="HiSatchMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a high saturated filter to an image.
+    /// </summary>
+    class HiSatchMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.HiSatch; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/IMatrixFilter.cs

@@ -0,0 +1,40 @@
+// -----------------------------------------------------------------------
+// <copyright file="IMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Defines properties and methods for ColorMatrix based filters.
+    /// </summary>
+    interface IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        ColorMatrix Matrix { get; }
+
+        #region Methods
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        Image ProcessImage(ImageFactory factory, Image image, Image newImage);
+        #endregion
+    }
+}

src/ImageProcessor/Imaging/Filters/InvertMatrixFilter.cs

@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------
+// <copyright file="InvertMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add an inverted filter to an image.
+    /// </summary>
+    class InvertMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.Invert; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/LoSatchMatrixFilter.cs

@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------
+// <copyright file="LoSatchMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a low saturated filter to an image.
+    /// </summary>
+    class LoSatchMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.LoSatch; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/LomographMatrixFilter.cs

@@ -0,0 +1,70 @@
+// -----------------------------------------------------------------------
+// <copyright file="LomographMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using ImageProcessor.Processors;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a lomograph filter to an image.
+    /// </summary>
+    class LomographMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.Lomograph; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Add a vignette to finish the effect.
+            factory.Image = newImage;
+            Vignette vignette = new Vignette();
+            newImage = (Bitmap)vignette.ProcessImage(factory);
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/PolaroidMatrixFilter.cs

@@ -0,0 +1,99 @@
+// -----------------------------------------------------------------------
+// <copyright file="PolaroidMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using ImageProcessor.Processors;
+    using System.Drawing.Drawing2D;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a polaroid filter to an image.
+    /// </summary>
+    class PolaroidMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.Polaroid; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+
+                    // Add a glow to the image.
+                    using (GraphicsPath path = new GraphicsPath())
+                    {
+                        path.AddEllipse(rectangle);
+                        using (PathGradientBrush brush = new PathGradientBrush(path))
+                        {
+                            // Fill a rectangle with an elliptical gradient brush that goes from orange to transparent.
+                            // This has the effect of painting the far corners transparent and fading in to orange on the 
+                            // way in to the centre.
+                            brush.WrapMode = WrapMode.Tile;
+                            brush.CenterColor = Color.FromArgb(70, 255, 153, 102);
+                            brush.SurroundColors = new Color[] { Color.FromArgb(0, 0, 0, 0) };
+
+                            Blend blend = new Blend
+                            {
+                                Positions = new float[] { 0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0F },
+                                Factors = new float[] { 0.0f, 0.5f, 1f, 1f, 1.0f, 1.0f }
+                            };
+
+                            brush.Blend = blend;
+
+                            Region oldClip = graphics.Clip;
+                            graphics.Clip = new Region(rectangle);
+                            graphics.FillRectangle(brush, rectangle);
+                            graphics.Clip = oldClip;
+                        }
+                    }
+                }
+            }
+
+            // Add a vignette to finish the effect.
+            factory.Image = newImage;
+            Vignette vignette = new Vignette();
+            newImage = (Bitmap)vignette.ProcessImage(factory);
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/Filters/SepiaMatrixFilter.cs

@@ -0,0 +1,64 @@
+// -----------------------------------------------------------------------
+// <copyright file="SepiaMatrixFilter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Imaging.Filters
+{
+    #region Using
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Text;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add a sepia filter to an image.
+    /// </summary>
+    class SepiaMatrixFilter : IMatrixFilter
+    {
+        /// <summary>
+        /// Gets the <see cref="T:System.Drawing.Imaging.ColoMatrix"/> for this filter instance.
+        /// </summary>
+        public ColorMatrix Matrix
+        {
+            get { return ColorMatrixes.Sepia; }
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <param name="image">The current image to process</param>
+        /// <param name="newImage">The new Image to return</param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory, Image image, Image newImage)
+        {
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                using (ImageAttributes attributes = new ImageAttributes())
+                {
+                    attributes.SetColorMatrix(this.Matrix);
+
+                    Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                    graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                }
+            }
+
+            // Reassign the image.
+            image.Dispose();
+            image = newImage;
+
+            return image;
+        }
+    }
+}

src/ImageProcessor/Imaging/TextLayer.cs

@@ -13,7 +13,7 @@ namespace ImageProcessor.Imaging
     #endregion
 
     /// <summary>
-    /// Enacapsulates the properties required to add a leyer of text to an image.
+    /// Enacapsulates the properties required to add a layer of text to an image.
     /// </summary>
     public class TextLayer
     {

src/ImageProcessor/Processors/Copy of Filter.cs

@@ -0,0 +1,610 @@
+// -----------------------------------------------------------------------
+// <copyright file="Filter.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Processors
+{
+    #region Using
+
+    using System;
+    using System.Collections.Generic;
+    using System.Drawing;
+    using System.Drawing.Drawing2D;
+    using System.Drawing.Imaging;
+    using System.IO;
+    using System.Text.RegularExpressions;
+    using System.Web;
+    using System.Web.Hosting;
+
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods with which to add filters to an image.
+    /// </summary>
+    public class Filter : IGraphicsProcessor
+    {
+        /// <summary>
+        /// The regular expression to search strings for.
+        /// </summary>
+        private static readonly Regex QueryRegex = new Regex(@"filter=(lomograph|polaroid|blackwhite|sepia|greyscale|gotham|invert|hisatch|losatch|comic)", RegexOptions.Compiled);
+
+        /// <summary>
+        /// Enumurates Argb colour channels.
+        /// </summary>
+        private enum ChannelArgb
+        {
+            /// <summary>
+            /// The blue channel
+            /// </summary>
+            Blue = 0,
+
+            /// <summary>
+            /// The green channel
+            /// </summary>
+            Green = 1,
+
+            /// <summary>
+            /// The red channel
+            /// </summary>
+            Red = 2,
+
+            /// <summary>
+            /// The alpha channel
+            /// </summary>
+            Alpha = 3
+        }
+
+        #region IGraphicsProcessor Members
+        /// <summary>
+        /// Gets the name.
+        /// </summary>
+        public string Name
+        {
+            get
+            {
+                return "Filter";
+            }
+        }
+
+        /// <summary>
+        /// Gets the description.
+        /// </summary>
+        public string Description
+        {
+            get
+            {
+                return "Encapsulates methods with which to add filters to an image. e.g polaroid, lomograph";
+            }
+        }
+
+        /// <summary>
+        /// Gets the regular expression to search strings for.
+        /// </summary>
+        public Regex RegexPattern
+        {
+            get
+            {
+                return QueryRegex;
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets DynamicParameter.
+        /// </summary>
+        public dynamic DynamicParameter
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Gets the order in which this processor is to be used in a chain.
+        /// </summary>
+        public int SortOrder
+        {
+            get;
+            private set;
+        }
+
+        /// <summary>
+        /// Gets or sets any additional settings required by the processor.
+        /// </summary>
+        public Dictionary<string, string> Settings
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// The position in the original string where the first character of the captured substring was found.
+        /// </summary>
+        /// <param name="queryString">
+        /// The query string to search.
+        /// </param>
+        /// <returns>
+        /// The zero-based starting position in the original string where the captured substring was found.
+        /// </returns>
+        public int MatchRegexIndex(string queryString)
+        {
+            int index = 0;
+
+            // Set the sort order to max to allow filtering.
+            this.SortOrder = int.MaxValue;
+
+            foreach (Match match in this.RegexPattern.Matches(queryString))
+            {
+                if (match.Success)
+                {
+                    if (index == 0)
+                    {
+                        // Set the index on the first instance only.
+                        this.SortOrder = match.Index;
+                        this.DynamicParameter = match.Value.Split('=')[1];
+                    }
+
+                    index += 1;
+                }
+            }
+
+            return this.SortOrder;
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory)
+        {
+            Bitmap newImage = null;
+            Image image = factory.Image;
+
+            // Bitmaps for comic pattern
+            Bitmap hisatchBitmap = null;
+            Bitmap patternBitmap = null;
+
+            try
+            {
+                // Dont use an object initializer here.
+                newImage = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppPArgb);
+                newImage.Tag = image.Tag;
+
+                ColorMatrix colorMatrix = null;
+
+                switch ((string)this.DynamicParameter)
+                {
+                    case "polaroid":
+                        colorMatrix = ColorMatrixes.Polaroid;
+                        break;
+                    case "lomograph":
+                        colorMatrix = ColorMatrixes.Lomograph;
+                        break;
+                    case "sepia":
+                        colorMatrix = ColorMatrixes.Sepia;
+                        break;
+                    case "blackwhite":
+                        colorMatrix = ColorMatrixes.BlackWhite;
+                        break;
+                    case "greyscale":
+                        colorMatrix = ColorMatrixes.GreyScale;
+                        break;
+                    case "gotham":
+                        colorMatrix = ColorMatrixes.Gotham;
+                        break;
+                    case "invert":
+                        colorMatrix = ColorMatrixes.Invert;
+                        break;
+                    case "hisatch":
+                        colorMatrix = ColorMatrixes.HiSatch;
+                        break;
+                    case "losatch":
+                        colorMatrix = ColorMatrixes.LoSatch;
+                        break;
+                    case "comic":
+                        colorMatrix = ColorMatrixes.LoSatch;
+                        break;
+                }
+
+                using (Graphics graphics = Graphics.FromImage(newImage))
+                {
+                    using (ImageAttributes attributes = new ImageAttributes())
+                    {
+                        if (colorMatrix != null)
+                        {
+                            attributes.SetColorMatrix(colorMatrix);
+                        }
+
+                        Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
+
+                        if (this.DynamicParameter == "comic")
+                        {
+                            // Set the attributes to LoSatch and draw the image.
+                            graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+
+                            // Create a bitmap for overlaying.
+                            hisatchBitmap = new Bitmap(rectangle.Width, rectangle.Height, PixelFormat.Format32bppPArgb);
+
+                            // Set the color matrix
+                            attributes.SetColorMatrix(ColorMatrixes.HiSatch);
+
+                            // Draw the image with the hisatch colormatrix.
+                            using (var g = Graphics.FromImage(hisatchBitmap))
+                            {
+                                g.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+                            }
+
+                            // We need to create a new image now with the hi saturation colormatrix and a pattern mask to paint it
+                            // onto the other image with.
+                            patternBitmap = new Bitmap(rectangle.Width, rectangle.Height, PixelFormat.Format32bppPArgb);
+
+                            // Create the pattern mask.
+                            using (var g = Graphics.FromImage(patternBitmap))
+                            {
+                                g.Clear(Color.Black);
+                                g.SmoothingMode = SmoothingMode.HighQuality;
+                                for (var y = 0; y < image.Height; y += 10)
+                                {
+                                    for (var x = 0; x < image.Width; x += 6)
+                                    {
+                                        g.FillEllipse(Brushes.White, x, y, 4, 4);
+                                        g.FillEllipse(Brushes.White, x + 3, y + 5, 4, 4);
+                                    }
+                                }
+                            }
+
+                            // Transfer the alpha channel from the mask to the hi sturation image.
+                            TransferOneArgbChannelFromOneBitmapToAnother(patternBitmap, hisatchBitmap, ChannelArgb.Blue, ChannelArgb.Alpha);
+
+                            // Overlay the image.
+                            graphics.DrawImage(hisatchBitmap, 0, 0);
+
+                            // Dispose of the other images
+                            hisatchBitmap.Dispose();
+                            patternBitmap.Dispose();
+                        }
+                        else
+                        {
+                            graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
+
+                            // Polaroid requires an extra tweak.
+                            if (this.DynamicParameter == "polaroid")
+                            {
+                                using (GraphicsPath path = new GraphicsPath())
+                                {
+                                    path.AddEllipse(rectangle);
+                                    using (PathGradientBrush brush = new PathGradientBrush(path))
+                                    {
+                                        // Fill a rectangle with an elliptical gradient brush that goes from orange to transparent.
+                                        // This has the effect of painting the far corners transparent and fading in to orange on the 
+                                        // way in to the centre.
+                                        brush.WrapMode = WrapMode.Tile;
+                                        brush.CenterColor = Color.FromArgb(70, 255, 153, 102);
+                                        brush.SurroundColors = new Color[] { Color.FromArgb(0, 0, 0, 0) };
+
+                                        Blend blend = new Blend
+                                            {
+                                                Positions = new float[] { 0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0F },
+                                                Factors = new float[] { 0.0f, 0.5f, 1f, 1f, 1.0f, 1.0f }
+                                            };
+
+                                        brush.Blend = blend;
+
+                                        Region oldClip = graphics.Clip;
+                                        graphics.Clip = new Region(rectangle);
+                                        graphics.FillRectangle(brush, rectangle);
+                                        graphics.Clip = oldClip;
+                                    }
+                                }
+                            }
+
+                            // Gotham requires an extra tweak.
+                            if (this.DynamicParameter == "gotham")
+                            {
+                                using (GraphicsPath path = new GraphicsPath())
+                                {
+                                    path.AddRectangle(rectangle);
+
+                                    // Paint a burgundy rectangle with a transparency of ~30% over the image.
+                                    // Paint a blue rectangle with a transparency of 20% over the image.
+                                    using (SolidBrush brush = new SolidBrush(Color.FromArgb(77, 43, 4, 18)))
+                                    {
+                                        Region oldClip = graphics.Clip;
+                                        graphics.Clip = new Region(rectangle);
+                                        graphics.FillRectangle(brush, rectangle);
+
+                                        // Fill the blue.
+                                        brush.Color = Color.FromArgb(51, 12, 22, 88);
+                                        graphics.FillRectangle(brush, rectangle);
+                                        graphics.Clip = oldClip;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                // Add a vignette to finish the effect.
+                // TODO: This feels a bit mucky so I might chop it out.
+                if (this.DynamicParameter == "polaroid" || this.DynamicParameter == "lomograph")
+                {
+                    factory.Image = newImage;
+                    Vignette vignette = new Vignette();
+                    newImage = (Bitmap)vignette.ProcessImage(factory);
+                }
+
+                // Reassign the image.
+                image.Dispose();
+                image = newImage;
+            }
+            catch
+            {
+                if (newImage != null)
+                {
+                    newImage.Dispose();
+                }
+
+                if (hisatchBitmap != null)
+                {
+                    hisatchBitmap.Dispose();
+                }
+
+                if (patternBitmap != null)
+                {
+                    patternBitmap.Dispose();
+                }
+            }
+
+            return image;
+        }
+        #endregion
+
+        /// <summary>
+        /// Transfers a single ARGB channel from one image to another.
+        /// </summary>
+        /// <param name="source">
+        /// The source.
+        /// </param>
+        /// <param name="destination">
+        /// The destination.
+        /// </param>
+        /// <param name="sourceChannel">
+        /// The source channel.
+        /// </param>
+        /// <param name="destinationChannel">
+        /// The destination channel.
+        /// </param>
+        private static void TransferOneArgbChannelFromOneBitmapToAnother(Bitmap source, Bitmap destination, ChannelArgb sourceChannel, ChannelArgb destinationChannel)
+        {
+            if (source.Size != destination.Size)
+            {
+                throw new ArgumentException();
+            }
+
+            Rectangle rectangle = new Rectangle(Point.Empty, source.Size);
+
+            // Lockbits the source.
+            BitmapData bitmapDataSource = source.LockBits(rectangle, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
+
+            // Declare an array to hold the bytes of the bitmap.
+            int bytes = bitmapDataSource.Stride * bitmapDataSource.Height;
+
+            // Allocate a buffer for the source image
+            byte[] sourceRgbValues = new byte[bytes];
+
+            // Copy the RGB values into the array.
+            System.Runtime.InteropServices.Marshal.Copy(bitmapDataSource.Scan0, sourceRgbValues, 0, bytes);
+
+            // Unlockbits the source.
+            source.UnlockBits(bitmapDataSource);
+
+            // Lockbits the destination.
+            BitmapData bitmapDataDestination = destination.LockBits(rectangle, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
+
+            // Allocate a buffer for image
+            byte[] destinationRgbValues = new byte[bytes];
+
+            // Copy the RGB values into the array.
+            System.Runtime.InteropServices.Marshal.Copy(bitmapDataDestination.Scan0, destinationRgbValues, 0, bytes);
+
+            int s = (int)sourceChannel;
+            int d = (int)destinationChannel;
+
+            for (int i = rectangle.Height * rectangle.Width; i > 0; i--)
+            {
+                destinationRgbValues[d] = sourceRgbValues[s];
+                d += 4;
+                s += 4;
+            }
+
+            // Copy the RGB values back to the bitmap
+            System.Runtime.InteropServices.Marshal.Copy(destinationRgbValues, 0, bitmapDataDestination.Scan0, bytes);
+
+            // Unlock bits the destination.
+            destination.UnlockBits(bitmapDataDestination);
+        }
+
+        /// <summary>
+        /// A list of available color matrices to apply to an image.
+        /// </summary>
+        private static class ColorMatrixes
+        {
+            /// <summary>
+            /// Gets Sepia.
+            /// </summary>
+            internal static ColorMatrix Sepia
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { .393f, .349f, .272f, 0, 0 }, 
+                                new float[] { .769f, .686f, .534f, 0, 0 },
+                                new float[] { .189f, .168f, .131f, 0, 0 },
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0, 0, 0, 0, 1 }
+                          });
+                }
+            }
+
+            /// <summary>
+            /// Gets BlackWhite.
+            /// </summary>
+            internal static ColorMatrix BlackWhite
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 }, 
+                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 },
+                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 },
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { -1, -1, -1, 0, 1 }
+                          });
+                }
+            }
+
+            /// <summary>
+            /// Gets Polaroid.
+            /// </summary>
+            internal static ColorMatrix Polaroid
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { 1.638f, -0.062f, -0.262f, 0, 0 },
+                                new float[] { -0.122f, 1.378f, -0.122f, 0, 0 },
+                                new float[] { 1.016f, -0.016f, 1.383f, 0, 0 },
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0.06f, -0.05f, -0.05f, 0, 1 }
+                          });
+                }
+            }
+
+            /// <summary>
+            /// Gets Lomograph.
+            /// </summary>
+            internal static ColorMatrix Lomograph
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { 1.50f, 0, 0, 0, 0 }, 
+                                new float[] { 0, 1.45f, 0, 0, 0 },
+                                new float[] { 0, 0, 1.09f, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { -0.10f, 0.05f, -0.08f, 0, 1 }
+                            });
+                }
+            }
+
+            /// <summary>
+            /// Gets GreyScale.
+            /// </summary>
+            internal static ColorMatrix GreyScale
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { .33f, .33f, .33f, 0, 0 }, 
+                                new float[] { .59f, .59f, .59f, 0, 0 },
+                                new float[] { .11f, .11f, .11f, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0, 0, 0, 0, 1 }
+                            });
+                }
+            }
+
+            /// <summary>
+            /// Gets Gotham.
+            /// </summary>
+            internal static ColorMatrix Gotham
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { .9f, .9f, .9f, 0, 0 }, 
+                                new float[] { .9f, .9f, .9f, 0, 0 }, 
+                                new float[] { .9f, .9f, .9f, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { -.5f, -.5f, -.45f, 0, 1 }
+                            });
+                }
+            }
+
+            /// <summary>
+            /// Gets Invert.
+            /// </summary>
+            internal static ColorMatrix Invert
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { -1, 0, 0, 0, 0 }, 
+                                new float[] { 0, -1, 0, 0, 0 },  
+                                new float[] { 0, 0, -1, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 1, 1, 1, 0, 1 }
+                            });
+                }
+            }
+
+            /// <summary>
+            /// Gets HiSatch.
+            /// </summary>
+            internal static ColorMatrix HiSatch
+            {
+                get
+                {
+                    return new ColorMatrix(
+                        new float[][]
+                            {
+                                new float[] { 3, -1, -1, 0, 0 }, 
+                                new float[] { -1, 3, -1, 0, 0 },  
+                                new float[] { -1, -1, 3, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { 0, 0, 0, 0, 1 }
+                            });
+                }
+            }
+
+            /// <summary>
+            /// Gets LoSatch.
+            /// </summary>
+            internal static ColorMatrix LoSatch
+            {
+                get
+                {
+                    return new ColorMatrix(
+                           new float[][]
+                            {
+                                new float[] { 1, 0, 0, 0, 0 }, 
+                                new float[] { 0, 1, 0, 0, 0 },  
+                                new float[] { 0, 0, 1, 0, 0 }, 
+                                new float[] { 0, 0, 0, 1, 0 },
+                                new float[] { .25f, .25f, .25f, 0, 1 }
+                            });
+                }
+            }
+        }
+    }
+}

src/ImageProcessor/Processors/Filter.cs

@@ -17,6 +17,7 @@ namespace ImageProcessor.Processors
     using System.Text.RegularExpressions;
     using System.Web;
     using System.Web.Hosting;
+    using ImageProcessor.Imaging.Filters;
 
     #endregion
 
@@ -30,32 +31,6 @@ namespace ImageProcessor.Processors
         /// </summary>
         private static readonly Regex QueryRegex = new Regex(@"filter=(lomograph|polaroid|blackwhite|sepia|greyscale|gotham|invert|hisatch|losatch|comic)", RegexOptions.Compiled);
 
-        /// <summary>
-        /// Enumurates Argb colour channels.
-        /// </summary>
-        private enum ChannelArgb
-        {
-            /// <summary>
-            /// The blue channel
-            /// </summary>
-            Blue = 0,
-
-            /// <summary>
-            /// The green channel
-            /// </summary>
-            Green = 1,
-
-            /// <summary>
-            /// The red channel
-            /// </summary>
-            Red = 2,
-
-            /// <summary>
-            /// The alpha channel
-            /// </summary>
-            Alpha = 3
-        }
-
         #region IGraphicsProcessor Members
         /// <summary>
         /// Gets the name.
@@ -166,182 +141,50 @@ namespace ImageProcessor.Processors
             Bitmap newImage = null;
             Image image = factory.Image;
 
-            // Bitmaps for comic pattern
-            Bitmap hisatchBitmap = null;
-            Bitmap patternBitmap = null;
-
             try
             {
                 // Dont use an object initializer here.
                 newImage = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppPArgb);
                 newImage.Tag = image.Tag;
 
-                ColorMatrix colorMatrix = null;
+                IMatrixFilter matrix = null;
 
                 switch ((string)this.DynamicParameter)
                 {
                     case "polaroid":
-                        colorMatrix = ColorMatrixes.Polaroid;
+                        matrix = new PolaroidMatrixFilter();
                         break;
                     case "lomograph":
-                        colorMatrix = ColorMatrixes.Lomograph;
+                        matrix = new LomographMatrixFilter();
                         break;
                     case "sepia":
-                        colorMatrix = ColorMatrixes.Sepia;
+                        matrix = new SepiaMatrixFilter();
                         break;
                     case "blackwhite":
-                        colorMatrix = ColorMatrixes.BlackWhite;
+                        matrix = new BlackWhiteMatrixFilter();
                         break;
                     case "greyscale":
-                        colorMatrix = ColorMatrixes.GreyScale;
+                        matrix = new GreyScaleMatrixFilter();
                         break;
                     case "gotham":
-                        colorMatrix = ColorMatrixes.Gotham;
+                        matrix = new GothamMatrixFilter();
                         break;
                     case "invert":
-                        colorMatrix = ColorMatrixes.Invert;
+                        matrix = new InvertMatrixFilter();
                         break;
                     case "hisatch":
-                        colorMatrix = ColorMatrixes.HiSatch;
+                        matrix = new HiSatchMatrixFilter();
                         break;
                     case "losatch":
-                        colorMatrix = ColorMatrixes.LoSatch;
+                        matrix = new LoSatchMatrixFilter();
                         break;
                     case "comic":
-                        colorMatrix = ColorMatrixes.LoSatch;
+                        matrix = new ComicMatrixFilter();
                         break;
                 }
 
-                using (Graphics graphics = Graphics.FromImage(newImage))
-                {
-                    using (ImageAttributes attributes = new ImageAttributes())
-                    {
-                        if (colorMatrix != null)
-                        {
-                            attributes.SetColorMatrix(colorMatrix);
-                        }
-
-                        Rectangle rectangle = new Rectangle(0, 0, image.Width, image.Height);
-
-                        if (this.DynamicParameter == "comic")
-                        {
-                            // Set the attributes to LoSatch and draw the image.
-                            graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
-
-                            // Create a bitmap for overlaying.
-                            hisatchBitmap = new Bitmap(rectangle.Width, rectangle.Height, PixelFormat.Format32bppPArgb);
-
-                            // Set the color matrix
-                            attributes.SetColorMatrix(ColorMatrixes.HiSatch);
+                return matrix.ProcessImage(factory, image, newImage);
 
-                            // Draw the image with the hisatch colormatrix.
-                            using (var g = Graphics.FromImage(hisatchBitmap))
-                            {
-                                g.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
-                            }
-
-                            // We need to create a new image now with the hi saturation colormatrix and a pattern mask to paint it
-                            // onto the other image with.
-                            patternBitmap = new Bitmap(rectangle.Width, rectangle.Height, PixelFormat.Format32bppPArgb);
-
-                            // Create the pattern mask.
-                            using (var g = Graphics.FromImage(patternBitmap))
-                            {
-                                g.Clear(Color.Black);
-                                g.SmoothingMode = SmoothingMode.HighQuality;
-                                for (var y = 0; y < image.Height; y += 10)
-                                {
-                                    for (var x = 0; x < image.Width; x += 6)
-                                    {
-                                        g.FillEllipse(Brushes.White, x, y, 4, 4);
-                                        g.FillEllipse(Brushes.White, x + 3, y + 5, 4, 4);
-                                    }
-                                }
-                            }
-
-                            // Transfer the alpha channel from the mask to the hi sturation image.
-                            TransferOneArgbChannelFromOneBitmapToAnother(patternBitmap, hisatchBitmap, ChannelArgb.Blue, ChannelArgb.Alpha);
-
-                            // Overlay the image.
-                            graphics.DrawImage(hisatchBitmap, 0, 0);
-
-                            // Dispose of the other images
-                            hisatchBitmap.Dispose();
-                            patternBitmap.Dispose();
-                        }
-                        else
-                        {
-                            graphics.DrawImage(image, rectangle, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes);
-
-                            // Polaroid requires an extra tweak.
-                            if (this.DynamicParameter == "polaroid")
-                            {
-                                using (GraphicsPath path = new GraphicsPath())
-                                {
-                                    path.AddEllipse(rectangle);
-                                    using (PathGradientBrush brush = new PathGradientBrush(path))
-                                    {
-                                        // Fill a rectangle with an elliptical gradient brush that goes from orange to transparent.
-                                        // This has the effect of painting the far corners transparent and fading in to orange on the 
-                                        // way in to the centre.
-                                        brush.WrapMode = WrapMode.Tile;
-                                        brush.CenterColor = Color.FromArgb(70, 255, 153, 102);
-                                        brush.SurroundColors = new Color[] { Color.FromArgb(0, 0, 0, 0) };
-
-                                        Blend blend = new Blend
-                                            {
-                                                Positions = new float[] { 0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1.0F },
-                                                Factors = new float[] { 0.0f, 0.5f, 1f, 1f, 1.0f, 1.0f }
-                                            };
-
-                                        brush.Blend = blend;
-
-                                        Region oldClip = graphics.Clip;
-                                        graphics.Clip = new Region(rectangle);
-                                        graphics.FillRectangle(brush, rectangle);
-                                        graphics.Clip = oldClip;
-                                    }
-                                }
-                            }
-
-                            // Gotham requires an extra tweak.
-                            if (this.DynamicParameter == "gotham")
-                            {
-                                using (GraphicsPath path = new GraphicsPath())
-                                {
-                                    path.AddRectangle(rectangle);
-
-                                    // Paint a burgundy rectangle with a transparency of ~30% over the image.
-                                    // Paint a blue rectangle with a transparency of 20% over the image.
-                                    using (SolidBrush brush = new SolidBrush(Color.FromArgb(77, 43, 4, 18)))
-                                    {
-                                        Region oldClip = graphics.Clip;
-                                        graphics.Clip = new Region(rectangle);
-                                        graphics.FillRectangle(brush, rectangle);
-
-                                        // Fill the blue.
-                                        brush.Color = Color.FromArgb(51, 12, 22, 88);
-                                        graphics.FillRectangle(brush, rectangle);
-                                        graphics.Clip = oldClip;
-                                    }
-                                }
-                            }
-                        }
-                    }
-                }
-
-                // Add a vignette to finish the effect.
-                // TODO: This feels a bit mucky so I might chop it out.
-                if (this.DynamicParameter == "polaroid" || this.DynamicParameter == "lomograph")
-                {
-                    factory.Image = newImage;
-                    Vignette vignette = new Vignette();
-                    newImage = (Bitmap)vignette.ProcessImage(factory);
-                }
-
-                // Reassign the image.
-                image.Dispose();
-                image = newImage;
             }
             catch
             {
@@ -349,262 +192,10 @@ namespace ImageProcessor.Processors
                 {
                     newImage.Dispose();
                 }
-
-                if (hisatchBitmap != null)
-                {
-                    hisatchBitmap.Dispose();
-                }
-
-                if (patternBitmap != null)
-                {
-                    patternBitmap.Dispose();
-                }
             }
 
             return image;
         }
         #endregion
-
-        /// <summary>
-        /// Transfers a single ARGB channel from one image to another.
-        /// </summary>
-        /// <param name="source">
-        /// The source.
-        /// </param>
-        /// <param name="destination">
-        /// The destination.
-        /// </param>
-        /// <param name="sourceChannel">
-        /// The source channel.
-        /// </param>
-        /// <param name="destinationChannel">
-        /// The destination channel.
-        /// </param>
-        private static void TransferOneArgbChannelFromOneBitmapToAnother(Bitmap source, Bitmap destination, ChannelArgb sourceChannel, ChannelArgb destinationChannel)
-        {
-            if (source.Size != destination.Size)
-            {
-                throw new ArgumentException();
-            }
-
-            Rectangle rectangle = new Rectangle(Point.Empty, source.Size);
-
-            // Lockbits the source.
-            BitmapData bitmapDataSource = source.LockBits(rectangle, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
-
-            // Declare an array to hold the bytes of the bitmap.
-            int bytes = bitmapDataSource.Stride * bitmapDataSource.Height;
-
-            // Allocate a buffer for the source image
-            byte[] sourceRgbValues = new byte[bytes];
-
-            // Copy the RGB values into the array.
-            System.Runtime.InteropServices.Marshal.Copy(bitmapDataSource.Scan0, sourceRgbValues, 0, bytes);
-
-            // Unlockbits the source.
-            source.UnlockBits(bitmapDataSource);
-
-            // Lockbits the destination.
-            BitmapData bitmapDataDestination = destination.LockBits(rectangle, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
-
-            // Allocate a buffer for image
-            byte[] destinationRgbValues = new byte[bytes];
-
-            // Copy the RGB values into the array.
-            System.Runtime.InteropServices.Marshal.Copy(bitmapDataDestination.Scan0, destinationRgbValues, 0, bytes);
-
-            int s = (int)sourceChannel;
-            int d = (int)destinationChannel;
-
-            for (int i = rectangle.Height * rectangle.Width; i > 0; i--)
-            {
-                destinationRgbValues[d] = sourceRgbValues[s];
-                d += 4;
-                s += 4;
-            }
-
-            // Copy the RGB values back to the bitmap
-            System.Runtime.InteropServices.Marshal.Copy(destinationRgbValues, 0, bitmapDataDestination.Scan0, bytes);
-
-            // Unlock bits the destination.
-            destination.UnlockBits(bitmapDataDestination);
-        }
-
-        /// <summary>
-        /// A list of available color matrices to apply to an image.
-        /// </summary>
-        private static class ColorMatrixes
-        {
-            /// <summary>
-            /// Gets Sepia.
-            /// </summary>
-            internal static ColorMatrix Sepia
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { .393f, .349f, .272f, 0, 0 }, 
-                                new float[] { .769f, .686f, .534f, 0, 0 },
-                                new float[] { .189f, .168f, .131f, 0, 0 },
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { 0, 0, 0, 0, 1 }
-                          });
-                }
-            }
-
-            /// <summary>
-            /// Gets BlackWhite.
-            /// </summary>
-            internal static ColorMatrix BlackWhite
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 }, 
-                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 },
-                                new float[] { 1.5f, 1.5f, 1.5f, 0, 0 },
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { -1, -1, -1, 0, 1 }
-                          });
-                }
-            }
-
-            /// <summary>
-            /// Gets Polaroid.
-            /// </summary>
-            internal static ColorMatrix Polaroid
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { 1.638f, -0.062f, -0.262f, 0, 0 },
-                                new float[] { -0.122f, 1.378f, -0.122f, 0, 0 },
-                                new float[] { 1.016f, -0.016f, 1.383f, 0, 0 },
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { 0.06f, -0.05f, -0.05f, 0, 1 }
-                          });
-                }
-            }
-
-            /// <summary>
-            /// Gets Lomograph.
-            /// </summary>
-            internal static ColorMatrix Lomograph
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { 1.50f, 0, 0, 0, 0 }, 
-                                new float[] { 0, 1.45f, 0, 0, 0 },
-                                new float[] { 0, 0, 1.09f, 0, 0 }, 
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { -0.10f, 0.05f, -0.08f, 0, 1 }
-                            });
-                }
-            }
-
-            /// <summary>
-            /// Gets GreyScale.
-            /// </summary>
-            internal static ColorMatrix GreyScale
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { .33f, .33f, .33f, 0, 0 }, 
-                                new float[] { .59f, .59f, .59f, 0, 0 },
-                                new float[] { .11f, .11f, .11f, 0, 0 }, 
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { 0, 0, 0, 0, 1 }
-                            });
-                }
-            }
-
-            /// <summary>
-            /// Gets Gotham.
-            /// </summary>
-            internal static ColorMatrix Gotham
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { .9f, .9f, .9f, 0, 0 }, 
-                                new float[] { .9f, .9f, .9f, 0, 0 }, 
-                                new float[] { .9f, .9f, .9f, 0, 0 }, 
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { -.5f, -.5f, -.45f, 0, 1 }
-                            });
-                }
-            }
-
-            /// <summary>
-            /// Gets Invert.
-            /// </summary>
-            internal static ColorMatrix Invert
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { -1, 0, 0, 0, 0 }, 
-                                new float[] { 0, -1, 0, 0, 0 },  
-                                new float[] { 0, 0, -1, 0, 0 }, 
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { 1, 1, 1, 0, 1 }
-                            });
-                }
-            }
-
-            /// <summary>
-            /// Gets HiSatch.
-            /// </summary>
-            internal static ColorMatrix HiSatch
-            {
-                get
-                {
-                    return new ColorMatrix(
-                        new float[][]
-                            {
-                                new float[] { 3, -1, -1, 0, 0 }, 
-                                new float[] { -1, 3, -1, 0, 0 },  
-                                new float[] { -1, -1, 3, 0, 0 }, 
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { 0, 0, 0, 0, 1 }
-                            });
-                }
-            }
-
-            /// <summary>
-            /// Gets LoSatch.
-            /// </summary>
-            internal static ColorMatrix LoSatch
-            {
-                get
-                {
-                    return new ColorMatrix(
-                           new float[][]
-                            {
-                                new float[] { 1, 0, 0, 0, 0 }, 
-                                new float[] { 0, 1, 0, 0, 0 },  
-                                new float[] { 0, 0, 1, 0, 0 }, 
-                                new float[] { 0, 0, 0, 1, 0 },
-                                new float[] { .25f, .25f, .25f, 0, 1 }
-                            });
-                }
-            }
-        }
     }
 }

src/ImageProcessor/Processors/Resize.cs

@@ -24,7 +24,7 @@ namespace ImageProcessor.Processors
         /// <summary>
         /// The regular expression to search strings for.
         /// </summary>
-        private static readonly Regex QueryRegex = new Regex(@"((width|height)=\d+|resize=width-\d+\|height-\d+)", RegexOptions.Compiled);
+        private static readonly Regex QueryRegex = new Regex(@"(resize=width-\d+\|height-\d+|width=\d+\&height=\d+|height=\d+\&width=\d+|(width|height)=\d+)", RegexOptions.Compiled);
 
         #region IGraphicsProcessor Members
         /// <summary>
@@ -114,6 +114,7 @@ namespace ImageProcessor.Processors
                         this.SortOrder = match.Index;
                     }
 
+                    // Resize syntax
                     if (match.Value.Contains("resize"))
                     {
                         int[] values = match.Value.ToIntegerArray();
@@ -121,8 +122,29 @@ namespace ImageProcessor.Processors
                         size.Width = values[0];
                         size.Height = values[1];
                     }
+                    else if (match.Value.Contains("width") && match.Value.Contains("height"))
+                    {
+                        // Combined width/height syntax
+                        int widthPosition = match.Value.IndexOf("width");
+                        int heightPosition = match.Value.IndexOf("height");
+
+                        int[] values = match.Value.ToIntegerArray();
+
+                        if (widthPosition < heightPosition)
+                        {
+                            size.Width = values[0];
+                            size.Height = values[1];
+
+                        }
+                        else
+                        {
+                            size.Width = values[1];
+                            size.Height = values[0];
+                        }
+                    }
                     else
                     {
+                        // Inividual syntax
                         if (match.Value.Contains("width"))
                         {
                             size.Width = match.Value.ToIntegerArray()[0];

src/ImageProcessor/Processors/Rotate.cs

@@ -0,0 +1,282 @@
+// -----------------------------------------------------------------------
+// <copyright file="Rotate.cs" company="James South">
+// TODO: Update copyright text.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace ImageProcessor.Processors
+{
+    #region Using
+    using System.Collections.Generic;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using System.Text.RegularExpressions;
+    using ImageProcessor.Helpers.Extensions;
+    using System;
+    using System.Drawing.Drawing2D;
+    #endregion
+
+    /// <summary>
+    /// Encapsulates methods to rotate an image.
+    /// </summary>
+    public class Rotate : IGraphicsProcessor
+    {
+        /// <summary>
+        /// The regular expression to search strings for.
+        /// </summary>
+        //private static readonly Regex QueryRegex = new Regex(@"rotate=-*([1-9][0-7][0-9]|\d{1,2}(?!\d)|180)|rotate=[^&]*", RegexOptions.Compiled);
+        private static readonly Regex QueryRegex = new Regex(@"rotate=-*([1-2][0-9][0-9]|3[0-5][0-9]|\d{1}(?!\d)|\d{1,2}(?!\d)|360)|rotate=[^&]*", RegexOptions.Compiled);
+
+        /// <summary>
+        /// The regular expression to search strings for the angle attribute.
+        /// </summary>
+        private static readonly Regex AngleRegex = new Regex(@"rotate=\[-*([1-9][0-7][0-9]|\d{1,2}(?!\d)|180)\]", RegexOptions.Compiled);
+
+        /// <summary>
+        /// The regular expression to search strings for the color attribute.
+        /// </summary>
+        private static readonly Regex ColorRegex = new Regex(@"bgcolor-([0-9a-fA-F]{3}){1,2}", RegexOptions.Compiled);
+
+        /// <summary>
+        /// The format of the image to rotate.
+        /// </summary>
+        private ImageFormat imageFormat;
+
+        #region IGraphicsProcessor Members
+        /// <summary>
+        /// Gets the name.
+        /// </summary>
+        public string Name
+        {
+            get
+            {
+                return "Rotate";
+            }
+        }
+
+        /// <summary>
+        /// Gets the description.
+        /// </summary>
+        public string Description
+        {
+            get
+            {
+                return "Rotates an image at the given angle.";
+            }
+        }
+
+        /// <summary>
+        /// Gets the regular expression to search strings for.
+        /// </summary>
+        public Regex RegexPattern
+        {
+            get
+            {
+                return QueryRegex;
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets DynamicParameter.
+        /// </summary>
+        public dynamic DynamicParameter
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Gets the order in which this processor is to be used in a chain.
+        /// </summary>
+        public int SortOrder
+        {
+            get;
+            private set;
+        }
+
+        /// <summary>
+        /// Gets or sets any additional settings required by the processor.
+        /// </summary>
+        public Dictionary<string, string> Settings
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// The position in the original string where the first character of the captured substring was found.
+        /// </summary>
+        /// <param name="queryString">
+        /// The query string to search.
+        /// </param>
+        /// <returns>
+        /// The zero-based starting position in the original string where the captured substring was found.
+        /// </returns>
+        public int MatchRegexIndex(string queryString)
+        {
+            int index = 0;
+
+            // Set the sort order to max to allow filtering.
+            this.SortOrder = int.MaxValue;
+
+            foreach (Match match in this.RegexPattern.Matches(queryString))
+            {
+                if (match.Success)
+                {
+                    if (index == 0)
+                    {
+                        // Set the index on the first instance only.
+                        this.SortOrder = match.Index;
+                        int degrees;
+
+                        int.TryParse(match.Value.Split('=')[1], out degrees);
+
+                        this.DynamicParameter = degrees;
+                    }
+
+                    index += 1;
+                }
+            }
+
+            return this.SortOrder;
+        }
+
+        /// <summary>
+        /// Processes the image.
+        /// </summary>
+        /// <param name="factory">
+        /// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
+        /// the image to process.
+        /// </param>
+        /// <returns>
+        /// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
+        /// </returns>
+        public Image ProcessImage(ImageFactory factory)
+        {
+            Bitmap newImage = null;
+            Image image = factory.Image;
+
+            try
+            {
+                int angle = this.DynamicParameter;
+
+                // Center of the image
+                float rotateAtX = image.Width / 2;
+                float rotateAtY = image.Height / 2;
+
+                this.imageFormat = factory.ImageFormat;
+
+                // Create a rotated image.
+                newImage = RotateImage(image, rotateAtX, rotateAtY, angle);
+                newImage.Tag = image.Tag;
+
+                image.Dispose();
+                image = newImage;
+
+            }
+            catch
+            {
+                if (newImage != null)
+                {
+                    newImage.Dispose();
+                }
+            }
+
+            return image;
+        }
+        #endregion
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="image"></param>
+        /// <param name="rotateAtX"></param>
+        /// <param name="rotateAtY"></param>
+        /// <param name="angle"></param>
+        /// <returns></returns>
+        /// <remarks> Based on http://www.codeproject.com/Articles/58815/C-Image-PictureBox-Rotations?msg=4155374#xx4155374xx</remarks>
+        private Bitmap RotateImage(Image image, float rotateAtX, float rotateAtY, float angle)
+        {
+            int width, height, X, Y;
+
+            // Degrees to radians according to Google. 
+            const double degreeToRadian = 0.0174532925;
+
+            double widthAsDouble = (double)image.Width;
+            double heightAsDouble = (double)image.Height;
+
+            // Allow for angles over 180
+            if (angle > 180)
+            {
+                angle = angle - 360;
+            }   
+
+            double degrees = Math.Abs(angle);        
+
+            if (degrees <= 90)
+            {
+                double radians = degreeToRadian * degrees;
+                double radiansSin = Math.Sin(radians);
+                double radiansCos = Math.Cos(radians);
+                width = (int)(heightAsDouble * radiansSin + widthAsDouble * radiansCos);
+                height = (int)(widthAsDouble * radiansSin + heightAsDouble * radiansCos);
+                X = (width - image.Width) / 2;
+                Y = (height - image.Height) / 2;
+            }
+            else
+            {
+                degrees -= 90;
+                double radians = degreeToRadian * degrees;
+                double radiansSin = Math.Sin(radians);
+                double radiansCos = Math.Cos(radians);
+
+                // Fix the 270 bug
+                if (radiansCos == -1)
+                {
+                    radiansCos = -1 * -1;
+                }
+
+                width = (int)(widthAsDouble * radiansSin + heightAsDouble * radiansCos);
+                height = (int)(heightAsDouble * radiansSin + widthAsDouble * radiansCos);
+                X = (width - image.Width) / 2;
+                Y = (height - image.Height) / 2;
+            }
+
+            //create a new empty bitmap to hold rotated image
+            Bitmap newImage = new Bitmap(width, height);
+            newImage.SetResolution(image.HorizontalResolution, image.VerticalResolution);
+
+            //make a graphics object from the empty bitmap
+            using (Graphics graphics = Graphics.FromImage(newImage))
+            {
+                // Reduce the jagged edge.
+                graphics.SmoothingMode = SmoothingMode.HighQuality;
+
+                // Contrary to everything I have read bicubic is producing the best results.
+                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
+                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
+                graphics.CompositingQuality = CompositingQuality.HighSpeed;
+
+                // Fill the background TODO: Set a color
+                if (this.imageFormat == ImageFormat.Jpeg)
+                {
+                    graphics.Clear(Color.White);
+                }
+
+                // Put the rotation point in the "center" of the image
+                graphics.TranslateTransform(rotateAtX + X, rotateAtY + Y);
+
+                // Rotate the image
+                graphics.RotateTransform(angle);
+
+                // Move the image back
+                graphics.TranslateTransform(-rotateAtX - X, -rotateAtY - Y);
+
+                // Draw passed in image onto graphics object
+                graphics.DrawImage(image, new PointF(0 + X, 0 + Y));
+
+            }
+            return newImage;
+        }
+    }
+}