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| 1 | <html> | 
| 2 | <center> | 
| 3 | <h2>Affine Transformations</h2> | 
| 4 | </center> | 
| 5 | |
| 6 | <p>In this demo we demonstrate Qt's ability to perform affine transformations | 
| 7 | on painting operations.</p> | 
| 8 | |
| 9 | <p>Transformations can be performed on any kind of graphics drawn using | 
| 10 | QPainter. The transformations used to display the vector graphics, images, | 
| 11 | and text can be adjusted in the following ways:</p> | 
| 12 | |
| 13 | <ul> | 
| 14 | <li>Dragging the red circle in the centre of each drawing moves it to a new | 
| 15 | position.</li> | 
| 16 | <li>Dragging the displaced red circle causes the current drawing to be | 
| 17 | rotated about the central circle. Rotation can also be controlled with | 
| 18 | the <b>Rotate</b> slider.</li> | 
| 19 | <li>Scaling is controlled with the <b>Scale</b> slider.</li> | 
| 20 | <li>Each drawing can be sheared with the <b>Shear</b> slider.</li> | 
| 21 | </ul> | 
| 22 | |
| 23 | </html> | 
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