Компиляция кода

Предыдущий пример предназначен для работы с Windows Forms, для него необходим объект PaintEventArgs e, передаваемый в качестве параметра обработчику события Paint. Не забудьте заменить путь и имя файла Apple.gif именем файла изображения в вашей системе.

How to: Rotate, Reflect, and Skew Images

You can rotate, reflect, and skew an image by specifying destination points for the upper-left, upper-right, and lower-left corners of the original image. The three destination points determine an affine transformation that maps the original rectangular image to a parallelogram.

Example

For example, suppose the original image is a rectangle with upper-left corner at (0, 0), upper-right corner at (100, 0), and lower-left corner at (0, 50). Now suppose you map those three points to destination points as follows.

The following illustration shows the original image and the image mapped to the parallelogram. The original image has been skewed, reflected, rotated, and translated. The x-axis along the top edge of the original image is mapped to the line that runs through (200, 20) and (110, 100). The y-axis along the left edge of the original image is mapped to the line that runs through (200, 20) and (250, 30).