CODEWITHSUNDEEP
c#.netimagewindows-store-appspixel
Peter
Peter

Reputation: 952

How to get one pixel of Image in Windows Store App (C#)

I am writing a game for Windows 8 in C#. I have an Image and I need to check the color of some given pixel. I know coordinates (x, y) of the pixel in Image, but I can not find any class that can do that. For example System.Drawing.Bitmap has method GetPixel, which would be perfect for me, but I can not use this class in Windows Store apps.

Does anyone know how can I do it? Thanks for any help!

Upvotes: 2

Views: 1146

Answers (1)

chue x
chue x

Reputation: 18823

I haven't used it, but you could try the WriteableBitmapEx class. The project page states that the class has a GetPixel method.

If you want to implement this yourself (it is not trivial, and takes quite a few function calls), one way is to use BitmapDecoder to read the bitmap and BitMapDecoder.GetPixelData to get a PixelDataProvider. From there you can get a byte buffer using DetachPixelData. The byte buffer is a one dimensional array in RGBA format. You'll have to map your x and y coordinates to this array.

Upvotes: 4

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