home *** CD-ROM | disk | FTP | other *** search
/ Mac Easy 2010 May / Mac Life Ubuntu.iso / casper / filesystem.squashfs / usr / share / gimp / 2.0 / help / en / gimp-tools-transform.html < prev    next >
Encoding:
Extensible Markup Language  |  2008-05-03  |  19.3 KB  |  465 lines
  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>4.¬† Transform Tools</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" />
  9.     <link rel="stylesheet" href="gimp-help-custom.css" type="text/css" />
  10.     <link rel="alternate stylesheet" href="gimp22.css" type="text/css" title="gimp22" />
  11.     <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
  12.     <link rel="start" href="index.html" title="GNU Image Manipulation Program" />
  13.     <link rel="up" href="gimp-toolbox.html" title="Chapter¬†13.¬† Toolbox" />
  14.     <link rel="prev" href="gimp-tool-dodge-burn.html" title="3.15.¬† Dodge or Burn" />
  15.     <link rel="next" href="gimp-tool-move.html" title="4.2.¬† Move" />
  16.   </head>
  17.   <body>
  18.     <div class="navheader">
  19.       <table width="100%" summary="Navigation header">
  20.         <tr>
  21.           <th colspan="3" align="center">4.¬†
  22.     <span lang="en" xml:lang="en">Transform Tools</span>
  23.   </th>
  24.         </tr>
  25.         <tr>
  26.           <td width="20%" align="left"><a accesskey="p" href="gimp-tool-dodge-burn.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  27.           <th width="60%" align="center">Chapter¬†13.¬†
  28.         <span lang="en" xml:lang="en">Toolbox</span>
  29.       </th>
  30.           <td width="20%" align="right">¬†<a accesskey="n" href="gimp-tool-move.html"><img src="../images/next.png" alt="Next" /></a></td>
  31.         </tr>
  32.       </table>
  33.       <hr />
  34.     </div>
  35.     <div class="sect1" lang="en" xml:lang="en">
  36.       <div class="titlepage">
  37.         <div>
  38.           <div>
  39.             <h2 class="title" style="clear: both"><a id="gimp-tools-transform"></a>4.¬†
  40.     <span lang="en" xml:lang="en">Transform Tools</span>
  41.   </h2>
  42.           </div>
  43.         </div>
  44.       </div>
  45.       <div class="sect2" lang="en" xml:lang="en">
  46.         <div class="titlepage">
  47.           <div>
  48.             <div>
  49.               <h3 class="title"><a id="gimp-tool-transform"></a>4.1.¬†
  50.     <span lang="en" xml:lang="en">Common Features</span>
  51.   </h3>
  52.             </div>
  53.           </div>
  54.         </div>
  55.         <a id="id2637304" class="indexterm"></a>
  56.         <div class="figure">
  57.           <a id="id2637317"></a>
  58.           <p class="title">
  59.             <b>Figure¬†13.84.¬†
  60.       <span lang="en" xml:lang="en">An overview of the transform tools</span>
  61.     </b>
  62.           </p>
  63.           <div class="figure-contents">
  64.             <div class="mediaobject">
  65.               <img src="../images/toolbox/transform-tools.png" alt="An overview of the transform tools" />
  66.             </div>
  67.           </div>
  68.         </div>
  69.         <br class="figure-break" />
  70.         <p>
  71.     Inside the Transformation tool dialog, you will find eight tools to modify
  72.     the presentation of the image or the presentation of an element of the
  73.     image, selection, layer or path. Each transform tool has an Option dialog
  74.     and an Information dialog to set parameters.
  75.   </p>
  76.         <div class="sect3" lang="en" xml:lang="en">
  77.           <div class="titlepage">
  78.             <div>
  79.               <div>
  80.                 <h4 class="title"><a id="gimp-tool-transform-options"></a>4.1.1.¬†
  81.       <span lang="en" xml:lang="en">Tool Options</span>
  82.     </h4>
  83.               </div>
  84.             </div>
  85.           </div>
  86.           <div class="figure">
  87.             <a id="id2637375"></a>
  88.             <p class="title">
  89.               <b>Figure¬†13.85.¬†
  90.         <span lang="en" xml:lang="en">Common options of transform tools</span>
  91.       </b>
  92.             </p>
  93.             <div class="figure-contents">
  94.               <div class="mediaobject">
  95.                 <img src="../images/toolbox/transform-tools-common-options.png" alt="Common options of transform tools" />
  96.               </div>
  97.             </div>
  98.           </div>
  99.           <br class="figure-break" />
  100.           <p>
  101.       Some options are shared by several transform tools. We will describe
  102.       them here. More specific options will be described with their tool.
  103.     </p>
  104.           <div class="variablelist">
  105.             <dl>
  106.               <dt>
  107.                 <span class="term">Transform</span>
  108.               </dt>
  109.               <dd>
  110.                 <p>
  111.             <acronym class="acronym">GIMP</acronym>
  112.             offers you three buttons which let you select which image element
  113.             the transform tool will work on.
  114.           </p>
  115.                 <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
  116.                   <table border="0" summary="Note">
  117.                     <tr>
  118.                       <td rowspan="2" align="center" valign="top" width="25">
  119.                         <img alt="[Note]" src="../images/note.png" />
  120.                       </td>
  121.                       <th align="left">Note</th>
  122.                     </tr>
  123.                     <tr>
  124.                       <td align="left" valign="top">
  125.                         <p>
  126.               Remind that the Transform option persists when you quit the
  127.               tool.
  128.             </p>
  129.                       </td>
  130.                     </tr>
  131.                   </table>
  132.                 </div>
  133.                 <div class="itemizedlist">
  134.                   <ul type="disc">
  135.                     <li>
  136.                       <p>
  137.                 When you activate the first button
  138.                 <span class="guiicon">
  139.                   <span class="inlinemediaobject"><img src="../images/tool-options/rotate-affect-layer.png" /></span>
  140.                 </span>
  141.                 the tool works on the active layer. If no selection exists in
  142.                 this layer, the whole layer will be transformed.
  143.               </p>
  144.                     </li>
  145.                     <li>
  146.                       <p>
  147.                 When you activate the second button
  148.                 <span class="guiicon">
  149.                   <span class="inlinemediaobject"><img src="../images/tool-options/rotate-affect-selection.png" /></span>
  150.                 </span>
  151.                 the tool works on the selection contour only (the whole layer
  152.                 contour if no selection).
  153.               </p>
  154.                     </li>
  155.                     <li>
  156.                       <p>
  157.                 When you activate the third button,
  158.                 <span class="guiicon">
  159.                   <span class="inlinemediaobject"><img src="../images/tool-options/rotate-affect-path.png" /></span>
  160.                 </span>
  161.                 the tool works on the path only.
  162.               </p>
  163.                     </li>
  164.                   </ul>
  165.                 </div>
  166.               </dd>
  167.               <dt>
  168.                 <span class="term">Direction</span>
  169.               </dt>
  170.               <dd>
  171.                 <p>
  172.             ‚Äú<span class="quote">Direction</span>‚Äù sets which way or direction a layer is
  173.             transformed. The Traditional mode will transform the image or
  174.             layer as one might expect. You just use the handles to do the
  175.             transformation that want to see happen on the image or layer on
  176.             the grid. When you then execute the transformation the image or
  177.             layer is transformed to the shape and position you put the grid
  178.             into.
  179.           </p>
  180.                 <p>
  181.             Corrective Rotation is primarily used to repair digital images
  182.             that have some geometric errors. To do so, you just have to align
  183.             the grid to show the same error as the image or layer. If you then
  184.             execute the transformation the grid and the image or layer wit it
  185.             are transformed ‚Äú<span class="quote">backwards</span>‚Äù until the grid is again
  186.             in the rectangular and straight shape it was when you started.
  187.           </p>
  188.               </dd>
  189.               <dt>
  190.                 <span class="term">Interpolation</span>
  191.               </dt>
  192.               <dd>
  193.                 <p>
  194.             The <span class="guilabel">Interpolation</span> drop-down list lets
  195.             you choose the quality of the transformation. For more
  196.             information about the different methods that can be employed,
  197.             see the glossary entry <a class="link" href="glossary.html#glossary-interpolation" title="Interpolation">Interpolation</a>.
  198.           </p>
  199.               </dd>
  200.               <dt>
  201.                 <span class="term">Clipping</span>
  202.               </dt>
  203.               <dd>
  204.                 <p>
  205.             After transformation, the image can be bigger. This option will
  206.             clip the transformed image to the original image size.
  207.           </p>
  208.                 <p>You can choose between several ways to clip:</p>
  209.                 <div class="variablelist">
  210.                   <dl>
  211.                     <dt>
  212.                       <span class="term">
  213.                 <span lang="en" xml:lang="en">Adjust</span>
  214.               </span>
  215.                     </dt>
  216.                     <dd>
  217.                       <div class="figure">
  218.                         <a id="id2637673"></a>
  219.                         <p class="title">
  220.                           <b>Figure¬†13.86.¬†
  221.                     <span lang="en" xml:lang="en">Original image for examples</span>
  222.                   </b>
  223.                         </p>
  224.                         <div class="figure-contents">
  225.                           <div class="mediaobject">
  226.                             <img src="../images/toolbox/clip-orig.png" alt="Original image for examples" />
  227.                             <div class="caption">
  228.                               <p>Original image</p>
  229.                             </div>
  230.                           </div>
  231.                           <div class="mediaobject">
  232.                             <img src="../images/toolbox/clip-adjust.png" alt="Original image for examples" />
  233.                             <div class="caption">
  234.                               <p>
  235.                         Rotation applied with ‚Äú<span class="quote">Adjust</span>‚Äù
  236.                       </p>
  237.                             </div>
  238.                           </div>
  239.                           <div class="mediaobject">
  240.                             <img src="../images/toolbox/clip-adjust2.png" alt="Original image for examples" />
  241.                             <div class="caption">
  242.                               <p>
  243.                         Rotation applied with ‚Äú<span class="quote">Adjust</span>‚Äù
  244.                         and canvas enlarged to layer size
  245.                       </p>
  246.                             </div>
  247.                           </div>
  248.                         </div>
  249.                       </div>
  250.                       <br class="figure-break" />
  251.                       <p>
  252.                   With Adjust: the layer is enlarged to contain all the
  253.                   rotated layer. The new layer border is visible; the whole
  254.                   layer becomes visible by using the
  255.                   <span class="guimenu">Image</span> ‚Üí <span class="guimenuitem">Adjust Canvas to Layers</span>
  256.                   command (on the right).
  257.                 </p>
  258.                     </dd>
  259.                     <dt>
  260.                       <span class="term">
  261.                 <span lang="en" xml:lang="en">Clip</span>
  262.               </span>
  263.                     </dt>
  264.                     <dd>
  265.                       <div class="figure">
  266.                         <a id="id2637804"></a>
  267.                         <p class="title">
  268.                           <b>Figure¬†13.87.¬†
  269.                     <span lang="en" xml:lang="en">Example for Clip</span>
  270.                   </b>
  271.                         </p>
  272.                         <div class="figure-contents">
  273.                           <div class="mediaobject">
  274.                             <img src="../images/toolbox/clip-crop.png" alt="Example for Clip" />
  275.                             <div class="caption">
  276.                               <p>Clip</p>
  277.                             </div>
  278.                           </div>
  279.                         </div>
  280.                       </div>
  281.                       <br class="figure-break" />
  282.                       <p>
  283.                   With Clip: all what exceeds image limits is deleted.
  284.                 </p>
  285.                     </dd>
  286.                     <dt>
  287.                       <span class="term">
  288.                 <span lang="en" xml:lang="en">Crop to result</span>
  289.               </span>
  290.                     </dt>
  291.                     <dd>
  292.                       <div class="figure">
  293.                         <a id="id2637862"></a>
  294.                         <p class="title">
  295.                           <b>Figure¬†13.88.¬†
  296.                     <span lang="en" xml:lang="en">Example for Crop to result</span>
  297.                   </b>
  298.                         </p>
  299.                         <div class="figure-contents">
  300.                           <div class="mediaobject">
  301.                             <img src="../images/toolbox/clip-3.png" alt="Example for Crop to result" />
  302.                             <div class="caption">
  303.                               <p>Crop to result</p>
  304.                             </div>
  305.                           </div>
  306.                         </div>
  307.                       </div>
  308.                       <br class="figure-break" />
  309.                       <p>
  310.                   If this option is selected, any border with no content that
  311.                   might occur after applying a transform operation to a layer
  312.                   will be removed.
  313.                 </p>
  314.                     </dd>
  315.                     <dt>
  316.                       <span class="term">
  317.                 <span lang="en" xml:lang="en">Crop with aspect</span>
  318.               </span>
  319.                     </dt>
  320.                     <dd>
  321.                       <div class="figure">
  322.                         <a id="id2637922"></a>
  323.                         <p class="title">
  324.                           <b>Figure¬†13.89.¬†
  325.                     <span lang="en" xml:lang="en">Example for Crop with aspect</span>
  326.                   </b>
  327.                         </p>
  328.                         <div class="figure-contents">
  329.                           <div class="mediaobject">
  330.                             <img src="../images/toolbox/clip-4.png" alt="Example for Crop with aspect" />
  331.                             <div class="caption">
  332.                               <p>Crop with aspect</p>
  333.                             </div>
  334.                           </div>
  335.                         </div>
  336.                       </div>
  337.                       <br class="figure-break" />
  338.                       <p>
  339.                   This option works like the one described before, but makes
  340.                   sure, that the aspect ratio is maintained.
  341.                 </p>
  342.                     </dd>
  343.                   </dl>
  344.                 </div>
  345.               </dd>
  346.               <dt>
  347.                 <span class="term">Preview</span>
  348.               </dt>
  349.               <dd>
  350.                 <a id="id2637984" class="indexterm"></a>
  351.                 <p>
  352.             <acronym class="acronym">GIMP</acronym> lets you select among four Preview
  353.             possibilities:
  354.           </p>
  355.                 <div class="variablelist">
  356.                   <dl>
  357.                     <dt>
  358.                       <span class="term">Outline</span>
  359.                     </dt>
  360.                     <dd>
  361.                       <p>
  362.                   Puts a frame to mark the image outline, with a handle on
  363.                   each corner. Movements will affect this frame only on the
  364.                   Preview, but the result of the transformation will concern
  365.                   either the content or the boundaries of the selection
  366.                   according to the selected Affect mode.
  367.                 </p>
  368.                     </dd>
  369.                     <dt>
  370.                       <span class="term">Grid</span>
  371.                     </dt>
  372.                     <dd>
  373.                       <p>
  374.                   Puts a grid on the image, with four handles. Movements will
  375.                   affect this grid only on the Preview, but the result of the
  376.                   transformation will concern either the content or the
  377.                   boundaries of the selection according to the selected
  378.                   Transform mode.
  379.                 </p>
  380.                     </dd>
  381.                     <dt>
  382.                       <span class="term">Image</span>
  383.                     </dt>
  384.                     <dd>
  385.                       <p>
  386.                   Here, the preview is a copy of the image superimposed on the
  387.                   image, with an outline. Movements affect this copy and the
  388.                   underlying image appears.
  389.                 </p>
  390.                     </dd>
  391.                     <dt>
  392.                       <span class="term">Grid+Image</span>
  393.                     </dt>
  394.                     <dd>
  395.                       <p>Both turn at the same time.</p>
  396.                     </dd>
  397.                   </dl>
  398.                 </div>
  399.                 <p>
  400.             Preview is only for greater convenience. Whatever your choice,
  401.             result will be the same when you validate the transformation.
  402.           </p>
  403.                 <p>
  404.             Options with grid activate a drop-list with two options:
  405.             <span class="guilabel">Number of Grid Lines</span> will allow control
  406.             over the total number of displayed grid lines. Use the
  407.             slider to set the number of grid lines.
  408.             <span class="guilabel">Grid Line Spacing</span> allows control over
  409.             the distance between the grid lines. Use the slider to set
  410.             the distance.
  411.           </p>
  412.                 <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
  413.                   <table border="0" summary="Note">
  414.                     <tr>
  415.                       <td rowspan="2" align="center" valign="top" width="25">
  416.                         <img alt="[Note]" src="../images/note.png" />
  417.                       </td>
  418.                       <th align="left">Note</th>
  419.                     </tr>
  420.                     <tr>
  421.                       <td align="left" valign="top">
  422.                         <p>
  423.               When rotating a path, Preview options are not valid: only
  424.               Outline is active.
  425.             </p>
  426.                       </td>
  427.                     </tr>
  428.                   </table>
  429.                 </div>
  430.               </dd>
  431.             </dl>
  432.           </div>
  433.         </div>
  434.       </div>
  435.     </div>
  436.     <div class="navfooter">
  437.       <hr />
  438.       <table width="100%" summary="Navigation footer">
  439.         <tr>
  440.           <td width="40%" align="left"><a accesskey="p" href="gimp-tool-dodge-burn.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  441.           <td width="20%" align="center">
  442.             <a accesskey="u" href="gimp-toolbox.html">
  443.               <img src="../images/up.png" alt="Up" />
  444.             </a>
  445.           </td>
  446.           <td width="40%" align="right">¬†<a accesskey="n" href="gimp-tool-move.html"><img src="../images/next.png" alt="Next" /></a></td>
  447.         </tr>
  448.         <tr>
  449.           <td width="40%" align="left" valign="top"><a accesskey="p" href="gimp-tool-dodge-burn.html">3.15.¬†
  450.     <span lang="en" xml:lang="en">Dodge or Burn</span>
  451.   </a>¬†</td>
  452.           <td width="20%" align="center">
  453.             <a accesskey="h" href="index.html">
  454.               <img src="../images/home.png" alt="Home" />
  455.             </a>
  456.           </td>
  457.           <td width="40%" align="right" valign="top">¬†<a accesskey="n" href="gimp-tool-move.html">4.2.¬†
  458.     <span lang="en" xml:lang="en">Move</span>
  459.   </a></td>
  460.         </tr>
  461.       </table>
  462.     </div>
  463.   </body>
  464. </html>
  465.