Graphics Programming with GDI+

10.6. Image Transformation

Image transformation is exactly the same as any other transformation process. In this section we will see how to rotate, scale, translate, reflect, and shear images. We will create a Matrix object, set the transformation process by calling its methods, set the Matrix object as the Transform property or the transformation methods of the Graphics object, and call DrawImage.

Rotating images is similar to rotating other graphics. Listing 10.16 rotates an image. We create a Graphics object using the CreateGraphics method. Then we create a Bitmap object from a file and call the DrawImage method, which draws the image on the form. After that we create a Matrix object, call its Rotate method, rotate the image by 30 degrees, ...