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141 lines
4.8 KiB
HTML
141 lines
4.8 KiB
HTML
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<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>
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<html>
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<head>
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<meta http-equiv='Content-Type' content='text/html; charset=us-ascii' />
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<title>The PIL.ImageTransform Module</title>
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<link rel='stylesheet' href='effbot.css' type='text/css' />
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</head>
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<body>
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<h1>The PIL.ImageTransform Module</h1>
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<dl>
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<dt><b>AffineTransform</b> (class) [<a href='#PIL.ImageTransform.AffineTransform-class'>#</a>]</dt>
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<dd>
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<p>Define an affine image transform.</p>
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<dl>
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<dt><i>matrix</i></dt>
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<dd>
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A 6-tuple (<i>a, b, c, d, e, f</i>) containing
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the first two rows from an affine transform matrix.
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</dd>
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</dl><br />
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<p>For more information about this class, see <a href='#PIL.ImageTransform.AffineTransform-class'><i>The AffineTransform Class</i></a>.</p>
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</dd>
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<dt><b>ExtentTransform</b> (class) [<a href='#PIL.ImageTransform.ExtentTransform-class'>#</a>]</dt>
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<dd>
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<p>Define a transform to extract a subregion from an image.</p>
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<dl>
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<dt><i>bbox</i></dt>
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<dd>
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A 4-tuple (<i>x0, y0, x1, y1</i>) which specifies
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two points in the input image's coordinate system.
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</dd>
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</dl><br />
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<p>For more information about this class, see <a href='#PIL.ImageTransform.ExtentTransform-class'><i>The ExtentTransform Class</i></a>.</p>
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</dd>
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<dt><b>MeshTransform</b> (class) [<a href='#PIL.ImageTransform.MeshTransform-class'>#</a>]</dt>
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<dd>
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<p>Define an mesh image transform.</p>
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<dl>
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<dt><i>data</i></dt>
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<dd>
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</dd>
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</dl><br />
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<p>For more information about this class, see <a href='#PIL.ImageTransform.MeshTransform-class'><i>The MeshTransform Class</i></a>.</p>
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</dd>
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<dt><b>QuadTransform</b> (class) [<a href='#PIL.ImageTransform.QuadTransform-class'>#</a>]</dt>
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<dd>
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<p>Define an quad image transform.</p>
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<dl>
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<dt><i>xy</i></dt>
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<dd>
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An 8-tuple (<i>x0, y0, x1, y1, x2, y2, y3, y3</i>) which
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contain the upper left, lower left, lower right, and upper right
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corner of the source quadrilateral.
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</dd>
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</dl><br />
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<p>For more information about this class, see <a href='#PIL.ImageTransform.QuadTransform-class'><i>The QuadTransform Class</i></a>.</p>
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</dd>
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</dl>
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<h2><a id='PIL.ImageTransform.AffineTransform-class' name='PIL.ImageTransform.AffineTransform-class'>The AffineTransform Class</a></h2>
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<dl>
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<dt><b>AffineTransform</b> (class) [<a href='#PIL.ImageTransform.AffineTransform-class'>#</a>]</dt>
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<dd>
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<p>Define an affine image transform.
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</p><p>
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This function takes a 6-tuple (<i>a, b, c, d, e, f</i>) which
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contain the first two rows from an affine transform matrix. For
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each pixel (<i>x, y</i>) in the output image, the new value is
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taken from a position (a <i>x</i> + b <i>y</i> + c,
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d <i>x</i> + e <i>y</i> + f) in the input image, rounded to
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nearest pixel.
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</p><p>
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This function can be used to scale, translate, rotate, and shear the
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original image.
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</p><dl>
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<dt><i>matrix</i></dt>
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<dd>
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A 6-tuple (<i>a, b, c, d, e, f</i>) containing
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the first two rows from an affine transform matrix.
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</dd>
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</dl><br />
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</dd>
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</dl>
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<h2><a id='PIL.ImageTransform.ExtentTransform-class' name='PIL.ImageTransform.ExtentTransform-class'>The ExtentTransform Class</a></h2>
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<dl>
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<dt><b>ExtentTransform</b> (class) [<a href='#PIL.ImageTransform.ExtentTransform-class'>#</a>]</dt>
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<dd>
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<p>Define a transform to extract a subregion from an image.
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</p><p>
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Maps a rectangle (defined by two corners) from the image to a
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rectangle of the given size. The resulting image will contain
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data sampled from between the corners, such that (<i>x0, y0</i>)
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in the input image will end up at (0,0) in the output image,
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and (<i>x1, y1</i>) at <i>size</i>.
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</p><p>
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This method can be used to crop, stretch, shrink, or mirror an
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arbitrary rectangle in the current image. It is slightly slower than
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<b>crop</b>, but about as fast as a corresponding <b>resize</b>
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operation.
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</p><dl>
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<dt><i>bbox</i></dt>
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<dd>
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A 4-tuple (<i>x0, y0, x1, y1</i>) which specifies
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two points in the input image's coordinate system.
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</dd>
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</dl><br />
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</dd>
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</dl>
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<h2><a id='PIL.ImageTransform.MeshTransform-class' name='PIL.ImageTransform.MeshTransform-class'>The MeshTransform Class</a></h2>
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<dl>
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<dt><b>MeshTransform</b> (class) [<a href='#PIL.ImageTransform.MeshTransform-class'>#</a>]</dt>
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<dd>
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<dl>
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<dt><i>data</i></dt>
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<dd>
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</dd>
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</dl><br />
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</dd>
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</dl>
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<h2><a id='PIL.ImageTransform.QuadTransform-class' name='PIL.ImageTransform.QuadTransform-class'>The QuadTransform Class</a></h2>
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<dl>
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<dt><b>QuadTransform</b> (class) [<a href='#PIL.ImageTransform.QuadTransform-class'>#</a>]</dt>
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<dd>
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<p>Define an quad image transform.
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</p><p>
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Maps a quadrilateral (a region defined by four corners) from the
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image to a rectangle of the given size.
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</p><dl>
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<dt><i>xy</i></dt>
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<dd>
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An 8-tuple (<i>x0, y0, x1, y1, x2, y2, y3, y3</i>) which
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contain the upper left, lower left, lower right, and upper right
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corner of the source quadrilateral.
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</dd>
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</dl><br />
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</dd>
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</dl>
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</body></html>
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