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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">
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  4.   <head>
  5.     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6.     <title>18.7.┬áTool Options</title>
  7.     <link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
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  10.     <link rel="start" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch04s18.html" title="18.┬áPreferences" />
  12.     <link rel="prev" href="ch04s18s06.html" title="18.6.┬áHelp System" />
  13.     <link rel="next" href="ch04s18s08.html" title="18.8.┬áToolbox" />
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  15.   <body>
  16.     <div xmlns="" class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center" id="chaptername">18.┬áPreferences</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch04s18s06.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center" id="sectionname">18.7.┬áTool Options</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch04s18s08.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="gimp-prefs-tool-options"></a>18.7.┬áTool Options</h3>
  34.           </div>
  35.         </div>
  36.       </div>
  37.       <a id="id3458231" class="indexterm"></a>
  38.       <div class="informalfigure">
  39.         <div class="mediaobject">
  40.           <img src="../images/preferences/prefs-tool-options.png" />
  41.           <div class="caption">
  42.             <p>
  43.           Tool Options Preferences
  44.         </p>
  45.           </div>
  46.         </div>
  47.       </div>
  48.       <p>
  49.     This page lets you customize several aspects of the behavior of tools.
  50.   </p>
  51.       <div class="simplesect" lang="en" xml:lang="en">
  52.         <div class="titlepage">
  53.           <div>
  54.             <div>
  55.               <h4 class="title"><a id="id3458276"></a>Options</h4>
  56.             </div>
  57.           </div>
  58.         </div>
  59.         <div class="variablelist">
  60.           <p class="title">
  61.             <b>Guide and Grid Snapping</b>
  62.           </p>
  63.           <dl>
  64.             <dt>
  65.               <span class="term">Snap distance</span>
  66.             </dt>
  67.             <dd>
  68.               <p>
  69.             "Snapping" to guides, or to an image grid, means that when a
  70.             tool is applied by clicking somewhere on the image display,
  71.             if the clicked point is near enough to a guide or grid, it
  72.             is shifted exactly onto the guide or grid.  Snapping to
  73.             guides can be toggled using
  74.             <span class="guimenu">View</span>-><span class="guimenuitem">Snap to Guides</span> 
  75.             in the image menu; and if the grid is switched on, snapping
  76.             to it can be toggled using
  77.             <span class="guimenu">View</span>-><span class="guimenuitem">Snap to Grid</span>.  This preference option determines how close a
  78.             clicked point must be to a guide or grid in order to be
  79.             snapped onto it, in pixels.
  80.           </p>
  81.             </dd>
  82.           </dl>
  83.         </div>
  84.         <div class="variablelist">
  85.           <p class="title">
  86.             <b>Finding Contiguous Regions</b>
  87.           </p>
  88.           <dl>
  89.             <dt>
  90.               <span class="term">Default threshold</span>
  91.             </dt>
  92.             <dd>
  93.               <p>
  94.             The "magic wand" tool creates selections that consist of
  95.             contiguous regions, i. e., regions that are not divided by
  96.             swaths of open space.  This option determines how near
  97.             each other two pixels need to be in order to be considered
  98.             contiguous. 
  99.           </p>
  100.             </dd>
  101.           </dl>
  102.         </div>
  103.         <div class="variablelist">
  104.           <p class="title">
  105.             <b>Scaling</b>
  106.           </p>
  107.           <dl>
  108.             <dt>
  109.               <span class="term">Default interpolation</span>
  110.             </dt>
  111.             <dd>
  112.               <p>
  113.             When you scale something, each pixel in the result is
  114.             calculated by interpolating several pixels in the source.
  115.             This option determines the default interpolation method:
  116.             it can always be changed, though, in the Tool Options
  117.             dialog.  There are three choices: None, Linear, and
  118.             Cubic.  "None" is fastest, but quite crude: you should
  119.             only consider using it if your machine is very seriously
  120.             speed-impaired.  "Linear" is the default, and is good
  121.             enough for most purposes.  "Cubic" is the best (although
  122.             it can actually look worse than Linear for some types of
  123.             images), but also the slowest.
  124.           </p>
  125.             </dd>
  126.           </dl>
  127.         </div>
  128.         <div class="variablelist">
  129.           <p class="title">
  130.             <b>Paint Options Shared Between Tools</b>
  131.           </p>
  132.           <dl>
  133.             <dt>
  134.               <span class="term">Brush, Pattern, Gradient</span>
  135.             </dt>
  136.             <dd>
  137.               <p>
  138.             You can decide here whether changing the brush etc for one
  139.             tool should cause the new item to be used for all tools,
  140.             or whether each individual tool (pencil, paintbrush,
  141.             airbrush, etc) should remember the item that was last used
  142.             for it specifically.
  143.           </p>
  144.             </dd>
  145.           </dl>
  146.         </div>
  147.       </div>
  148.     </div>
  149.     <div class="navfooter">
  150.       <hr />
  151.       <table width="100%" summary="Navigation footer">
  152.         <tr>
  153.           <td width="40%" align="left"><a accesskey="p" href="ch04s18s06.html">Prev</a>┬á</td>
  154.           <td width="20%" align="center">
  155.             <a accesskey="u" href="ch04s18.html">Up</a>
  156.           </td>
  157.           <td width="40%" align="right">┬á<a accesskey="n" href="ch04s18s08.html">Next</a></td>
  158.         </tr>
  159.         <tr>
  160.           <td width="40%" align="left" valign="top">18.6.┬áHelp System┬á</td>
  161.           <td width="20%" align="center">
  162.             <a accesskey="h" href="index.html">Home</a>
  163.           </td>
  164.           <td width="40%" align="right" valign="top">┬á18.8.┬áToolbox</td>
  165.         </tr>
  166.       </table>
  167.     </div>
  168.   </body>
  169. </html>
  170.