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  1. <?xml version="1.0" encoding="UTF-8" standalone="no"?>
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  3. <html xmlns="http://www.w3.org/1999/xhtml">
  4.   <head>
  5.     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6.     <title>10.3.┬áCurve Bend</title>
  7.     <link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
  8.     <link rel="stylesheet" href="gimp-help-screen.css" type="text/css" />
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  10.     <link rel="home" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch05s10.html" title="10.┬áDistort filters" />
  12.     <link rel="previous" href="ch05s10s02.html" title="10.2.┬áBlinds" />
  13.     <link rel="next" href="ch05s10s04.html" title="10.4.┬áEmboss" />
  14.   </head>
  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">10.3.┬áCurve Bend</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s10s02.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center">10.┬áDistort filters</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch05s10s04.html">Next</a></td>
  25.         </tr>
  26.       </table>
  27.       <hr />
  28.     </div>
  29.     <div class="sect2" lang="en" xml:lang="en">
  30.       <div class="titlepage">
  31.         <div>
  32.           <div>
  33.             <h3 class="title"><a id="plug-in-curve-bend"></a>10.3.┬áCurve Bend</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2979227" class="indexterm"></a>
  39.       <div class="mediaobject">
  40.         <img src="../images/filters/filters-distort-curvebend.png" />
  41.       </div>
  42.       <div class="simplesect" lang="en" xml:lang="en">
  43.         <div class="titlepage">
  44.           <div>
  45.             <div>
  46.               <h4 class="title"><a id="id2979248"></a>Overview</h4>
  47.             </div>
  48.           </div>
  49.           <div></div>
  50.         </div>
  51.         <p>
  52.         This filter is found in 
  53.         <span class="guimenuitem">Image>Filters/Distorts/<span class="accel">C</span>urve Bend</span>
  54.       </p>
  55.         <p>
  56.         This filter allows you to create a curve that will be used to distort 
  57.         the active layer or selection. The distorsion is applied graduately 
  58.         from an image or selection  border to the other
  59.       </p>
  60.       </div>
  61.       <div class="simplesect" lang="en" xml:lang="en">
  62.         <div class="titlepage">
  63.           <div>
  64.             <div>
  65.               <h4 class="title"><a id="id2979280"></a>Preview</h4>
  66.             </div>
  67.           </div>
  68.           <div></div>
  69.         </div>
  70.         <div class="variablelist">
  71.           <dl>
  72.             <dt></dt>
  73.             <dd>
  74.               <p>
  75.             This preview displays changes to image or selection without 
  76.             modifying the image until you press <span class="emphasis"><em>OK</em></span>.
  77.           </p>
  78.             </dd>
  79.             <dt>
  80.               <span class="term">Preview Once</span>
  81.             </dt>
  82.             <dd>
  83.               <p>
  84.             This button allows you to update the preview each time you need 
  85.             it.
  86.           </p>
  87.             </dd>
  88.             <dt>
  89.               <span class="term">Automatic Preview</span>
  90.             </dt>
  91.             <dd>
  92.               <p>
  93.             With this option, preview is changed in real time. This needs 
  94.             much calculation and may lengthen work. It is particularly 
  95.             evident when using "Rotation".
  96.           </p>
  97.             </dd>
  98.           </dl>
  99.         </div>
  100.       </div>
  101.       <div class="simplesect" lang="en" xml:lang="en">
  102.         <div class="titlepage">
  103.           <div>
  104.             <div>
  105.               <h4 class="title"><a id="id2979334"></a>Options</h4>
  106.             </div>
  107.           </div>
  108.           <div></div>
  109.         </div>
  110.         <div class="variablelist">
  111.           <dl>
  112.             <dt>
  113.               <span class="term">Rotate</span>
  114.             </dt>
  115.             <dd>
  116.               <p>
  117.           There, you can set the application angle of filter (0-360 counter-
  118.           clockwise). 0 is default setting: The curve will be applied from 
  119.           the upper border and/or from the lower. Set to 90, it will be 
  120.           applied from left border and/or from the right one.
  121.         </p>
  122.             </dd>
  123.             <dt>
  124.               <span class="term">Smoothing and Antialiasing</span>
  125.             </dt>
  126.             <dd>
  127.               <p>
  128.           The distort process may create hard and stepped borders. These two 
  129.           options improve this aspect.
  130.         </p>
  131.             </dd>
  132.             <dt>
  133.               <span class="term">Work on Copy</span>
  134.             </dt>
  135.             <dd>
  136.               <p>
  137.           This option creates a new layer called "Curve_bend_dummy_layer_b" 
  138.           which becomes the active layer, allowing you to see changes to your 
  139.           image in normal size without modifying the original image until you 
  140.           press the "OK" key.
  141.         </p>
  142.             </dd>
  143.           </dl>
  144.         </div>
  145.       </div>
  146.       <div class="simplesect" lang="en" xml:lang="en">
  147.         <div class="titlepage">
  148.           <div>
  149.             <div>
  150.               <h4 class="title"><a id="id2979393"></a>Modify Curve</h4>
  151.             </div>
  152.           </div>
  153.           <div></div>
  154.         </div>
  155.         <div class="variablelist">
  156.           <dl>
  157.             <dt>
  158.               <span class="term">The Grid</span>
  159.             </dt>
  160.             <dd>
  161.               <p>
  162.             In this grid, you have a marked horizontal line, with a node at 
  163.             both ends, which represents by default the upper border of image. 
  164.             If you click on this curve, a new node appears, that you can drag 
  165.             to modify the curve as you want. You can create several nodes on 
  166.             the curve.
  167.           </p>
  168.               <p>
  169.             You can have only two curves on the grid, one for the so named 
  170.             "upper" border and the other for the so named "lower" border. You 
  171.             can activate one of them by checking the <span class="emphasis"><em>Upper</em></span> 
  172.             or <span class="emphasis"><em>Lower</em></span> radio button.
  173.           </p>
  174.               <p>
  175.             If you use the <span class="emphasis"><em>Curve Type Free</em></span> option, the 
  176.             curve you draw will replace the active curve.
  177.           </p>
  178.             </dd>
  179.             <dt>
  180.               <span class="term">Curve for Border</span>
  181.             </dt>
  182.             <dd>
  183.               <p>
  184.             There you can select whether the active curve must be applied to 
  185.             the <span class="emphasis"><em>Superior (or left)</em></span> or the 
  186.             <span class="emphasis"><em>Inferior (or right)</em></span> border, according to the 
  187.             rotation.
  188.           </p>
  189.             </dd>
  190.             <dt>
  191.               <span class="term">Curve Type</span>
  192.             </dt>
  193.             <dd>
  194.               <p>
  195.             With the <span class="emphasis"><em>Smooth</em></span>, you get automatically a well 
  196.             rounded curve when you drag a node.          
  197.           </p>
  198.               <p> 
  199.             The <span class="emphasis"><em>Free</em></span> option allows you to draw a curve 
  200.             freely. It will replace the active curve. 
  201.           </p>
  202.             </dd>
  203.             <dt>
  204.               <span class="term">Buttons</span>
  205.             </dt>
  206.             <dd>
  207.               <p>
  208.             <span class="guilabel">Copy</span>: Copy the active curve to the other 
  209.             border.
  210.           </p>
  211.               <p>
  212.             <span class="guilabel">Mirror</span>: Mirror the active curve to the other 
  213.             border.
  214.           </p>
  215.               <p>
  216.             <span class="guilabel">Swap</span>: Swap the "superior" and "inferior" 
  217.             curves
  218.           </p>
  219.               <p>
  220.             <span class="guilabel">Reset</span>: Reset the active curve.
  221.           </p>
  222.               <p>
  223.             <span class="guilabel">Open</span>: Load the curve from a file.
  224.           </p>
  225.               <p>
  226.             <span class="guilabel">Save</span>: Save the curve to a file.
  227.           </p>
  228.             </dd>
  229.           </dl>
  230.         </div>
  231.       </div>
  232.       <div class="simplesect" lang="en" xml:lang="en">
  233.         <div class="titlepage">
  234.           <div>
  235.             <div>
  236.               <h4 class="title"><a id="id2979565"></a>Example</h4>
  237.             </div>
  238.           </div>
  239.           <div></div>
  240.         </div>
  241.         <div class="mediaobject">
  242.           <img src="../images/filters/examples/curve-ex.png" />
  243.         </div>
  244.       </div>
  245.     </div>
  246.     <div class="navfooter">
  247.       <hr />
  248.       <table width="100%" summary="Navigation footer">
  249.         <tr>
  250.           <td width="40%" align="left"><a accesskey="p" href="ch05s10s02.html">Prev</a>┬á</td>
  251.           <td width="20%" align="center">
  252.             <a accesskey="u" href="ch05s10.html">Up</a>
  253.           </td>
  254.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s10s04.html">Next</a></td>
  255.         </tr>
  256.         <tr>
  257.           <td width="40%" align="left" valign="top">10.2.┬áBlinds┬á</td>
  258.           <td width="20%" align="center">
  259.             <a accesskey="h" href="index.html">Home</a>
  260.           </td>
  261.           <td width="40%" align="right" valign="top">┬á10.4.┬áEmboss</td>
  262.         </tr>
  263.       </table>
  264.     </div>
  265.   </body>
  266. </html>
  267.