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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>12.4.┬áFlame</title>
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  10.     <link rel="start" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch06s12.html" title="12.┬áRendering filters" />
  12.     <link rel="prev" href="ch06s12s03.html" title="12.3.┬áSolid Noise" />
  13.     <link rel="next" href="ch06s12s05.html" title="12.5.┬áIFS Compose" />
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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">12.┬áRendering filters</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch06s12s03.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center" id="sectionname">12.4.┬áFlame</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch06s12s05.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-flame"></a>12.4.┬áFlame</h3>
  34.           </div>
  35.         </div>
  36.       </div>
  37.       <a id="id3489258" class="indexterm"></a>
  38.       <div class="mediaobject">
  39.         <img src="../images/filters/filters-render-flame.png" />
  40.       </div>
  41.       <div class="simplesect" lang="en" xml:lang="en">
  42.         <div class="titlepage">
  43.           <div>
  44.             <div>
  45.               <h4 class="title"><a id="id3489289"></a>Overview</h4>
  46.             </div>
  47.           </div>
  48.         </div>
  49.         <div class="informalfigure">
  50.           <div class="mediaobject">
  51.             <img src="../images/filters/examples/flame1.png" />
  52.             <div class="caption">
  53.               <p>
  54.          Example of a rendered Flame.
  55.        </p>
  56.             </div>
  57.           </div>
  58.         </div>
  59.         <p>
  60.       This filter is found in
  61.       <span class="guimenuitem">Image>Filters/Render/Nature/<span class="accel">F</span>lame</span>
  62.     </p>
  63.         <p>
  64.       With the Flame filter, you can create stunning, randomly
  65.       generated fractal patterns. You can't control the fractals as
  66.       you can with the <a href="ch06s12s05.html" title="12.5.┬áIFS Compose">Ifs
  67.       Compose</a> filter, but you can steer the 
  68.       random generator in a certain direction, and choose from
  69.       variations of a theme you like.  
  70.     </p>
  71.         <p>
  72.       In the main window, you can set Rendering and Camera
  73.       parameters. The first three parameters in the Render display are
  74.       Brightness, Contrast and Gamma. The result of these options is
  75.       visible in the Preview window, but it's generally better to
  76.       stick to the default values, and correct the rendered image
  77.       later with Image/Colors. 
  78.     </p>
  79.         <p>
  80.       The other three parameters affect the rendering process and
  81.       don't show in the preview window. Sample Density, which controls
  82.       the resolution of the rendered pattern, is the most important of
  83.       these. The Camera parameters allow
  84.       you to zoom and offset the flame pattern, until you're happy
  85.       with what you see in the preview window. Flame also offers the
  86.       possibility to store and load your favorite patterns.  
  87.     </p>
  88.       </div>
  89.       <div class="simplesect" lang="en" xml:lang="en">
  90.         <div class="titlepage">
  91.           <div>
  92.             <div>
  93.               <h4 class="title"><a id="id3489374"></a>Options</h4>
  94.             </div>
  95.           </div>
  96.         </div>
  97.         <div class="variablelist">
  98.           <dl>
  99.             <dt>
  100.               <span class="term">Edit</span>
  101.             </dt>
  102.             <dd>
  103.               <div class="informalfigure">
  104.                 <div class="mediaobject">
  105.                   <img src="../images/filters/filters-render-flame-edit.png" />
  106.                   <div class="caption">
  107.                     <p>
  108.           The Edit Flame dialog
  109.         </p>
  110.                   </div>
  111.                 </div>
  112.               </div>
  113.               <p>
  114.             Pressing this button brings up the Edit dialog.  The
  115.             dialog shows nine different windows. The pattern displayed
  116.             in the center is the current pattern, and the eight
  117.             windows surrounding it are random variations of that
  118.             pattern.  Clicking on the central image creates eight new
  119.             variations, which can be adjusted with the Speed
  120.             control. You select a variation by clicking on it, and it
  121.             instantly replaces the image in the middle. To pick a
  122.             certain character or theme for the variations, you can
  123.             choose from nine different themes in the Variations
  124.             menu. You can also use Randomize, which replaces the
  125.             current pattern with a new random pattern. 
  126.           </p>
  127.             </dd>
  128.             <dt>
  129.               <span class="term">Open</span>
  130.             </dt>
  131.             <dd>
  132.               <p>
  133.             This button brings up a file selector that allow you to
  134.             open a previously saved Flame settings file.
  135.           </p>
  136.             </dd>
  137.             <dt>
  138.               <span class="term">Save</span>
  139.             </dt>
  140.             <dd>
  141.               <p>
  142.             This button brings up a file save dialog that allows you
  143.             to save the current settings for the plug-in, so that you
  144.             can recreate them later.
  145.           </p>
  146.             </dd>
  147.             <dt>
  148.               <span class="term">Rendering: Brightness</span>
  149.             </dt>
  150.             <dd>
  151.               <p>
  152.             Controls the brightness of the flame object.
  153.           </p>
  154.             </dd>
  155.             <dt>
  156.               <span class="term">Rendering: Contrast</span>
  157.             </dt>
  158.             <dd>
  159.               <p>
  160.             Controls the contrast between brighter and dimmer parts of
  161.             the flame.
  162.           </p>
  163.             </dd>
  164.             <dt>
  165.               <span class="term">Rendering: Gamma</span>
  166.             </dt>
  167.             <dd>
  168.               <p>
  169.             Sets a gamma correction for parts with intermediate
  170.             brightness. 
  171.           </p>
  172.             </dd>
  173.             <dt>
  174.               <span class="term">Rendering: Sample Density</span>
  175.             </dt>
  176.             <dd>
  177.               <p>
  178.             Controls the resolution of the rendered pattern.  (Does
  179.             not have any effect on the preview.)  A high sample
  180.             density results in soft and smooth 
  181.             rendering (like a spider's web), whereas low density
  182.             rendering resembles spray or particle clouds. 
  183.           </p>
  184.             </dd>
  185.             <dt>
  186.               <span class="term">Rendering: Spatial Oversample</span>
  187.             </dt>
  188.             <dd>
  189.               <p>
  190.             What does this do?
  191.           </p>
  192.             </dd>
  193.             <dt>
  194.               <span class="term">Rendering: Spatial Filter Radius</span>
  195.             </dt>
  196.             <dd>
  197.               <p>
  198.             What does this do?
  199.           </p>
  200.             </dd>
  201.             <dt>
  202.               <span class="term">Rendering: Colormap</span>
  203.             </dt>
  204.             <dd>
  205.               <p>
  206.             This menu gives you several options to set the color blend
  207.             in the flame pattern:
  208.           </p>
  209.               <div class="itemizedlist">
  210.                 <ul type="disc">
  211.                   <li>
  212.                     <p>
  213.                 The current gradient as shown in the Toolbox.
  214.               </p>
  215.                   </li>
  216.                   <li>
  217.                     <p>
  218.                 A number of preset colormaps.
  219.               </p>
  220.                   </li>
  221.                   <li>
  222.                     <p>
  223.                 The colors from images that are presently open in
  224.                 Gimp. 
  225.               </p>
  226.                   </li>
  227.                 </ul>
  228.               </div>
  229.             </dd>
  230.             <dt>
  231.               <span class="term">Camera: Zoom</span>
  232.             </dt>
  233.             <dd>
  234.               <p>
  235.             Allows you to zoom the flame in or out.
  236.           </p>
  237.             </dd>
  238.             <dt>
  239.               <span class="term">Camera: X, Y</span>
  240.             </dt>
  241.             <dd>
  242.               <p>
  243.             Allows you to move the flame around in the image area.
  244.           </p>
  245.             </dd>
  246.           </dl>
  247.         </div>
  248.       </div>
  249.     </div>
  250.     <div class="navfooter">
  251.       <hr />
  252.       <table width="100%" summary="Navigation footer">
  253.         <tr>
  254.           <td width="40%" align="left"><a accesskey="p" href="ch06s12s03.html">Prev</a>┬á</td>
  255.           <td width="20%" align="center">
  256.             <a accesskey="u" href="ch06s12.html">Up</a>
  257.           </td>
  258.           <td width="40%" align="right">┬á<a accesskey="n" href="ch06s12s05.html">Next</a></td>
  259.         </tr>
  260.         <tr>
  261.           <td width="40%" align="left" valign="top">12.3.┬áSolid Noise┬á</td>
  262.           <td width="20%" align="center">
  263.             <a accesskey="h" href="index.html">Home</a>
  264.           </td>
  265.           <td width="40%" align="right" valign="top">┬á12.5.┬áIFS Compose</td>
  266.         </tr>
  267.       </table>
  268.     </div>
  269.   </body>
  270. </html>
  271.