mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-27 22:48:27 +08:00
24 lines
804 B
HTML
24 lines
804 B
HTML
|
<html>
|
||
|
|
<center>
|
||
|
|
<h2>Affine Transformations</h2>
|
||
|
|
</center>
|
||
|
|
|
||
|
|
<p>In this demo we demonstrate Qt's ability to perform affine transformations
|
||
|
|
on painting operations.</p>
|
||
|
|
|
||
|
|
<p>Transformations can be performed on any kind of graphics drawn using
|
||
|
|
QPainter. The transformations used to display the vector graphics, images,
|
||
|
|
and text can be adjusted in the following ways:</p>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li>Dragging the red circle in the centre of each drawing moves it to a new
|
||
|
|
position.</li>
|
||
|
|
<li>Dragging the displaced red circle causes the current drawing to be
|
||
|
|
rotated about the central circle. Rotation can also be controlled with
|
||
|
|
the <b>Rotate</b> slider.</li>
|
||
|
|
<li>Scaling is controlled with the <b>Scale</b> slider.</li>
|
||
|
|
<li>Each drawing can be sheared with the <b>Shear</b> slider.</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</html>
|