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Last change
on this file since 1052 was 2, checked in by Dmitry A. Kuminov, 16 years ago |
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Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
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File size:
804 bytes
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| 1 | <html>
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| 2 | <center>
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| 3 | <h2>Affine Transformations</h2>
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| 4 | </center>
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| 5 |
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| 6 | <p>In this demo we demonstrate Qt's ability to perform affine transformations
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| 7 | on painting operations.</p>
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| 8 |
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| 9 | <p>Transformations can be performed on any kind of graphics drawn using
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| 10 | QPainter. The transformations used to display the vector graphics, images,
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| 11 | and text can be adjusted in the following ways:</p>
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| 12 |
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| 13 | <ul>
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| 14 | <li>Dragging the red circle in the centre of each drawing moves it to a new
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| 15 | position.</li>
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| 16 | <li>Dragging the displaced red circle causes the current drawing to be
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| 17 | rotated about the central circle. Rotation can also be controlled with
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| 18 | the <b>Rotate</b> slider.</li>
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| 19 | <li>Scaling is controlled with the <b>Scale</b> slider.</li>
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| 20 | <li>Each drawing can be sheared with the <b>Shear</b> slider.</li>
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| 21 | </ul>
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| 22 |
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| 23 | </html>
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