Added NSImage.ToArray extension method.

Emgu.CV.NativeImage/CGImageExtension.cs

@@ -94,6 +94,13 @@ namespace Emgu.CV
             }
         }
 
+        /// <summary>
+        /// Convert a CGImage to a IOutputArray
+        /// </summary>
+        /// <param name="cgImage">The source CGImage</param>
+        /// <param name="mat">The destination array</param>
+        /// <param name="modes">The color format for the destination array</param>
+        /// <exception cref="NotImplementedException">Exception will be thrown if the ImreadModes is not supported.</exception>
         public static void ToArray(this CGImage cgImage, IOutputArray mat, ImreadModes modes = ImreadModes.AnyColor)
         {
             Size sz = new Size((int)cgImage.Width, (int)cgImage.Height);
@@ -147,12 +154,11 @@ namespace Emgu.CV
                          || modes == ImreadModes.ReducedGrayscale8
                          || modes == ImreadModes.LoadGdal)
                 {
-                    throw new NotImplementedException(String.Format("Conversion from PNG using mode {0} is not supported", modes));
+                    throw new NotImplementedException(String.Format("Conversion from CGImage using mode {0} is not supported", modes));
                 }
                 else
                 {
-                    throw new Exception(String.Format("ImreadModes of {0} is not implemented.", modes.ToString()));
-                    //CvInvoke.CvtColor(m, mat, ColorConversion.Rgba2Bgr);
+                    throw new NotImplementedException(String.Format("ImreadModes of {0} is not implemented.", modes.ToString()));
                 }
             }
         }

Emgu.CV.NativeImage/NSImageExtension.cs

@@ -13,30 +13,35 @@ using AppKit;
 
 namespace Emgu.CV
 {
+    /// <summary>
+    /// Provide extension method to convert IInputArray to and from NSImage
+    /// </summary>
     public static class NSImageExtension
     {
         /// <summary>
         /// Creating an Image from the NSImage
         /// </summary>
-      public static Image<TColor, TDepth> ToImage<TColor, TDepth> (this NSImage nsImage)
+        public static Image<TColor, TDepth> ToImage<TColor, TDepth>(this NSImage nsImage)
            where TColor : struct, IColor
            where TDepth : new()
             //: this( (int) uiImage.Size.Width, (int) uiImage.Size.Height)
         {
-         using (CGImage cgImage = nsImage.CGImage) {
-            return cgImage.ToImage<TColor, TDepth> ();
+            using (CGImage cgImage = nsImage.CGImage)
+            {
+                return cgImage.ToImage<TColor, TDepth>();
             }
         }
 
         /// <summary>
         /// Convert this Image object to NSImage
         /// </summary>
-      public static NSImage ToNSImage<TColor, TDepth> (this Image<TColor, TDepth> image)
+        public static NSImage ToNSImage<TColor, TDepth>(this Image<TColor, TDepth> image)
            where TColor : struct, IColor
            where TDepth : new()
         {
-         using (CGImage cgImage = image.ToCGImage ()) {
-            return new NSImage (cgImage, new CGSize(cgImage.Width, cgImage.Height));
+            using (CGImage cgImage = image.ToCGImage())
+            {
+                return new NSImage(cgImage, new CGSize(cgImage.Width, cgImage.Height));
             }
         }
 
@@ -48,9 +53,10 @@ namespace Emgu.CV
         public static UMat ToUMat(this NSImage nsImage, ImreadModes mode = ImreadModes.AnyColor)
         {
             //UMat umat = new UMat ();
-         using (CGImage cgImage = nsImage.CGImage) {
+            using (CGImage cgImage = nsImage.CGImage)
+            {
                 //ConvertCGImageToArray (cgImage, this, mode);
-            return cgImage.ToUMat (mode);
+                return cgImage.ToUMat(mode);
             }
         }
 
@@ -58,13 +64,29 @@ namespace Emgu.CV
         /// Converts to NSImage.
         /// </summary>
         /// <returns>The NSImage.</returns>
-      public static NSImage ToNSImage (this UMat umat)
+        public static NSImage ToNSImage(this UMat umat)
+        {
+            using (CGImage cgImage = umat.ToCGImage())
             {
-         using (CGImage cgImage = umat.ToCGImage ()) {
                 return new NSImage(cgImage, new CGSize(cgImage.Width, cgImage.Height));
             }
         }
 
+        /// <summary>
+        /// Convert a NSImage to a IOutputArray
+        /// </summary>
+        /// <param name="nsImage">The source NSImage</param>
+        /// <param name="mat">The destination array</param>
+        /// <param name="modes">The color format for the destination array</param>
+        /// <exception cref="NotImplementedException">Exception will be thrown if the ImreadModes is not supported.</exception>
+        public static void ToArray(this NSImage nsImage, IOutputArray mat, ImreadModes modes = ImreadModes.AnyColor)
+        {
+            using (CGImage cgImage = nsImage.CGImage)
+            {
+                cgImage.ToArray(mat, modes);
+            }
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="Emgu.CV.Mat"/> class from UIImage
         /// </summary>
@@ -72,8 +94,9 @@ namespace Emgu.CV
         /// <param name="nsImage">The NSImage.</param>
         public static Mat ToMat(this NSImage nsImage, ImreadModes mode = ImreadModes.AnyColor)
         {
-         using (CGImage cgImage = nsImage.CGImage) {
-            return cgImage.ToMat (mode);
+            using (CGImage cgImage = nsImage.CGImage)
+            {
+                return cgImage.ToMat(mode);
             }
         }
 
@@ -81,9 +104,10 @@ namespace Emgu.CV
         /// Converts to NSImage.
         /// </summary>
         /// <returns>The NSImage.</returns>
-      public static NSImage ToNSImage (this Mat mat)
+        public static NSImage ToNSImage(this Mat mat)
+        {
+            using (CGImage cgImage = mat.ToCGImage())
             {
-         using (CGImage cgImage = mat.ToCGImage ()) {
                 return new NSImage(cgImage, new CGSize(cgImage.Width, cgImage.Height));
             }
         }