WriteableBitmapEx | Collection of extension methods for the XAML WriteableBitmap | Learning library
kandi X-RAY | WriteableBitmapEx Summary
kandi X-RAY | WriteableBitmapEx Summary
The WriteableBitmapEx library is a collection of extension methods for the WriteableBitmap. The WriteableBitmap class is available for all XAML flavors including WPF, Windows 10 UWP, Windows Phone, WinRT Windows Store XAML and Silverlight. It supports the .NET Framework and .NET Core 3 and was even ported to Windows Embedded. WriteableBitmapEx allows the direct manipulation of a bitmap and can be used for image manipulation, to generate fast procedural images by drawing directly to a bitmap and more. The WriteableBitmap API is very minimalistic and there's only the raw Pixels array for such operations. The WriteableBitmapEx library tries to compensate that with extensions methods that are easy to use like built in methods and offer GDI+ like functionality. The library extends the WriteableBitmap class with elementary and fast (2D drawing) functionality, conversion methods and functions to combine (blit) WriteableBitmaps. The extension methods are grouped into different C# files using a partial class approach. It is possible to include just a few methods by using the specific source code files directly or the full functionality via the built binaries. The latest binaries are available as NuGet package. Please use the GitHub Issues functionality to add new issues which are not already reported.
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Trending Discussions on WriteableBitmapEx
QUESTION
I am using WriteableBitmap with WriteableBitmapEx, specifically FillEllipse method and when I call FillEllipse where portion of the ellipse is drawn outside the image, it causes an artifact on edge of the image.
Some code for illustration:
...ANSWER
Answered 2020-Jan-13 at 16:11Also see this issue on the GitHub project site: https://github.com/reneschulte/WriteableBitmapEx/issues/48
I will take a look when I get a chance.
[Update 01/13/2020] This is fixed in the latest on GitHub. The NuGet pack will get updated as well. See v1.6.5
QUESTION
I'm trying to use WriteableBitmap with the WriteableBitmapEx extension methods. The code sample is below along with two screenshots. The first screenshot is what my code generates and the second what I'm expecting (hand drawn via Paint.Net).
Am I using WriteableBitmapEx incorrectly, misunderstanding how it works or is it a bug?
This is on .Net 4.6.1 and WriteableBitmapEx 1.6.2.
...ANSWER
Answered 2019-Apr-17 at 06:08The WriteableBitmap uses pre-multiplied alpha internally, so when you convert a color you have to take that into account and multiply your color channels with alpha.
You can simply use the ConvertColor method that comes with WBX or roll your own similar to this:
QUESTION
I have searched around and found that most of the answers convert a WriteableBitmap
to a System.Drawing.Bitmap
. I am currently thinking of using WriteableBitmapEx
's Blitz()
function to overlay a bitmap with text onto the existing bitmap, but I don't really find functions that return WriteableBitmap
.
Is there a easy way to draw text?
...ANSWER
Answered 2017-Jul-25 at 09:26I managed to use the WriteableBitmapEx DrawString()
method to achieve this directly.
Unfortunately it is not inside the Nuget Packages so it has to be compiled from the source of another project:
https://writeablebitmapex.codeplex.com/discussions/579148
https://fastwpfgrid.codeplex.com/SourceControl/latest#WriteableBitmapEx/LetterGlyphTool.cs
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