From d11c2ac9288225d04f2f51566fcc0d8b730eda3b Mon Sep 17 00:00:00 2001
From: Simon Mourier <smourier@users.noreply.github.com>
Date: Wed, 21 Feb 2024 16:44:26 +0100
Subject: [PATCH] wip

---
 WicNet.Tests/Program.cs                     | 24 ++++++++++++++++++++-
 WicNet.Tests/Properties/launchSettings.json |  2 +-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/WicNet.Tests/Program.cs b/WicNet.Tests/Program.cs
index 3bc06cb..7e2e31f 100644
--- a/WicNet.Tests/Program.cs
+++ b/WicNet.Tests/Program.cs
@@ -14,10 +14,12 @@ class Program
     {
         static void Main(string[] args)
         {
-            ConvertSvgAsPng("tiger.svg");
+            Posterize(256);
             return;
             ConvertToBW();
             return;
+            ConvertSvgAsPng("tiger.svg");
+            return;
             ExtractGif();
             return;
             LoadFromIcon();
@@ -466,6 +468,26 @@ static void RotateAndGrayscale()
             Process.Start(new ProcessStartInfo("gray.jpg") { UseShellExecute = true });
         }
 
+        static void Posterize(uint numberOfColors)
+        {
+            using var bmp = WicBitmapSource.Load("SamsungSGH-P270.jpg");
+            bmp.ConvertTo(WicPixelFormat.GUID_WICPixelFormat32bppBGR);
+            using var newBmp = new WicBitmapSource(bmp.Width, bmp.Height, WicPixelFormat.GUID_WICPixelFormat32bppPRGBA);
+            using var rt = newBmp.CreateDeviceContext();
+            using var fx = rt.CreateEffect(Direct2DEffects.CLSID_D2D1Posterize);
+            using var cb = rt.CreateBitmapFromWicBitmap(bmp.ComObject);
+            fx.SetInput(cb);
+            fx.SetValue((int)D2D1_POSTERIZE_PROP.D2D1_POSTERIZE_PROP_RED_VALUE_COUNT, numberOfColors);
+            fx.SetValue((int)D2D1_POSTERIZE_PROP.D2D1_POSTERIZE_PROP_GREEN_VALUE_COUNT, numberOfColors);
+            fx.SetValue((int)D2D1_POSTERIZE_PROP.D2D1_POSTERIZE_PROP_BLUE_VALUE_COUNT, numberOfColors);
+            rt.BeginDraw();
+            rt.DrawImage(fx);
+            rt.EndDraw();
+            var name = "posterize" + numberOfColors + ".jpg";
+            newBmp.Save(name);
+            Process.Start(new ProcessStartInfo(name) { UseShellExecute = true });
+        }
+
         static void ConvertToBW()
         {
             using var bmp = WicBitmapSource.Load("SamsungSGH-P270.jpg");
diff --git a/WicNet.Tests/Properties/launchSettings.json b/WicNet.Tests/Properties/launchSettings.json
index 8cb20e5..6b586b5 100644
--- a/WicNet.Tests/Properties/launchSettings.json
+++ b/WicNet.Tests/Properties/launchSettings.json
@@ -2,7 +2,7 @@
   "profiles": {
     "WicNet.Tests": {
       "commandName": "Project",
-      "nativeDebugging": true
+      "nativeDebugging": false
     }
   }
 }
\ No newline at end of file