RotateActivity Class

Visual Basic
C#
Objective-C
Java
C++

public class RotateActivity : ImageProcessingBaseActivity, System.ComponentModel.IComponent, System.IDisposable

'Declaration
 
Public Class RotateActivity 
   Inherits ImageProcessingBaseActivity
   Implements System.ComponentModel.IComponent, System.IDisposable

'Usage
 
Dim instance As RotateActivity

public ref class RotateActivity : public ImageProcessingBaseActivity, System.ComponentModel.IComponent, System.IDisposable

This activity has the following features:

It uses the center of the image as the center of rotation.
It can rotate the image clockwise or counterclockwise up to 360 degrees in 100th-degree increments.
It can resize the image to accommodate the rotated height and width, or it can retain the original height and width, cropping the image as necessary.
It uses FillColor as the background color to fill any new area created by the rotation.

RotateCommandFlags.Resample and RotateCommandFlags.Bicubic can be combined with RotateCommandFlags.Resize, but they can not be combined with each other.

If RotateCommandFlags.Resize is set, then the image is resized. Otherwise, the image is cropped.

Interpolation can be done while rotating certain images. This produces superior output, eliminating the jaggedness occurring when rotating images at angles that are not multiples of 90. (ie when RotateActivity.Angle is not a multiple of 9000).

The only images that are interpolated are:

8-bit grayscale images (for best results, all gray values should be in the image palette).
12-bit and 16-bit grayscale images that do not have a palette.
16-bit color images
24-bit, 32-bit, 48-bit and 64-bit color images

For all other images, RotateActivity ignores the resampling flags and the rotation is performed without interpolation.

For more information, refer to Processing an Image.

Target Platforms

Reference

RotateActivity Members
Leadtools.Workflow.ImageProcessing Namespace