Rotate90k Method

Description:

Rotates an image clockwise about its center. The rotation must be a multiple of 90 degrees. If the rotation is either 90 or 270 degrees, the previous width of the image becomes the new height, and the previous height of the image becomes the new width. IG_ROTATE_0 does nothing and is included for completeness only.

This method processes all image channels, including Alpha channel and Extra channels, if they exist.

Syntax:

      Rotate90k (ByVal pPage As IGPage, ByVal RotationValue As
enumIGRotationValues)

Parameters:

Name	Description
pPage	Reference to IGPage Object.
RotationValue	One of IG_ROTATE_0, IG_ROTATE_90, IG_ROTATE_180, or IG_ROTATE_270.

Return Value:

N/A

Bits Per Pixel:

1, 4, 8, 9-16-bit gray level, 24, 32

Sample:

Image Processing and Effects