constants RotateTypeEnum
The RotateTypeEnum type indicates the type of rotation currently, the control supports. The RotateType property returns or sets a value that indicates whether the layer's rotation is performed fast, by shearing ( high quality rotation ), ... The RotateTypeEnum type supports the following values.

NameValueDescription
exRotateFast0 This is the default value. It is the fastest method compared with others but the images is not as smooth as possible. 
exRotateByShear1 The method also called "Rotation Through Shearing", unlike traditional rotation of images, where every n'th pixel is sampled and copied to the result image, this template provides much more accurate image rotation features (weighing the pixels).
exRotateBilinearInterpolation2 This method also called "Rotation by Bilinear Interpolation", is fast, and produces perfect rotation images.