Contains transformations that can be applied to pixel data.
The BitmapTransform class has these types of members:
The BitmapTransform class has these constructors.
|BitmapTransform||Creates a new BitmapTransform object.|
The BitmapTransform class inherits methods from the Object class (C#/VB/C++).
The BitmapTransform class has these properties.
|Read/write||Specifies the bounding rectangle that is used to crop the bitmap.|
|Read/write||Specifies the flip operation that is used to transform the bitmap.|
|Read/write||Specifies the interpolation mode that is used to scale the bitmap.|
|Read/write||Specifies the rotation operation that is used to transform the bitmap.|
|Read/write||Specifies the height, in pixels, of the bitmap after it is scaled.|
|Read/write||Specifies the width, in pixels, of the bitmap after it is scaled.|
The default values of BitmapTransform result in a pass-through operation.
T he order of operations is when setting multiple transform operations is:
You should be careful to use the correct coordinate space when specifying each transform’s parameters. Scaling occurs before rotations and flips, and therefore you should specify ScaledWidth and ScaledHeight in the source image’s coordinate space. Cropping occurs after all other transforms, and therefore you should specify Bounds in the final scaled/flipped/rotated coordinate space.
If you are using BitmapTransform with a method that performs EXIF orientation, such as GetPixelDataAsync, note that the EXIF orientation operation is combined with the flip/rotate stage. In these cases the behavior of ScaledWidth and ScaledHeight are not affected as scaling occurs before flip/rotate. However, when specifying Bounds you need to account for coordinate space changes from Flip and Rotation, as well as the EXIF orientation operation. You can obtain the full image size after EXIF orientation is applied by using OrientedPixelWidth and OrientedPixelHeight.
Minimum supported client
|Windows 8 [Windows Store apps only]|
Minimum supported server
|Windows Server 2012 [Windows Store apps only]|