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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>9.6.┬áSuperNova</title>
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  11.     <link rel="up" href="ch05s09.html" title="9.┬áLight Effects filters" />
  12.     <link rel="previous" href="ch05s09s05.html" title="9.5.┬áSparkle" />
  13.     <link rel="next" href="ch05s10.html" title="10.┬áDistort filters" />
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  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">9.6.┬áSuperNova</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s09s05.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center">9.┬áLight Effects filters</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch05s10.html">Next</a></td>
  25.         </tr>
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  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-nova"></a>9.6.┬áSuperNova</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2978823" class="indexterm"></a>
  39.       <div class="mediaobject">
  40.         <img src="../images/filters/filters-light-supernova.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="id2978844"></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/Light Effects/Super<span class="accel">N</span>ova</span>.
  54.     </p>
  55.         <p>
  56.       This filter creates a big star reminding a super-nova. It works with RGB and GRAY images. Light 
  57.       effect decreases according to 1/r where r is the distance from star center. 
  58.     </p>
  59.       </div>
  60.       <div class="simplesect" lang="en" xml:lang="en">
  61.         <div class="titlepage">
  62.           <div>
  63.             <div>
  64.               <h4 class="title"><a id="id2978876"></a>Parameter Settings</h4>
  65.             </div>
  66.           </div>
  67.           <div></div>
  68.         </div>
  69.         <dt>
  70.           <span class="term">Center of SuperNova</span>
  71.         </dt>
  72.         <dd>
  73.           <p>
  74.           You can use input boxes to set horizontal (X) and vertical (Y) coordinates of SuperNova 
  75.           center. You can also click and drag the SuperNova center in <span class="emphasis"><em>preview</em></span>. 
  76.         </p>
  77.           <p>
  78.           <span class="guilabel">Show Cursor</span>: This option brings up a reticle in preview, centered on 
  79.           SuperNova.
  80.         </p>
  81.         </dd>
  82.         <dt>
  83.           <span class="term">More parameters</span>
  84.         </dt>
  85.         <dd>
  86.           <p>
  87.           <span class="guilabel">Color</span>: When you click on the color dwell, you bring up the usual 
  88.           color selector.
  89.         </p>
  90.           <p>
  91.           <span class="guilabel">Radius</span>: This is radius of the SuperNova center (1-100). When you increase 
  92.           the value, you increase the number of central white pixels according to r*r (1, 4, 9...). 
  93.         </p>
  94.           <p>
  95.           <span class="guilabel">Spokes</span>: This is number of rays (1-1024). Each pixel in nova center emit 
  96.           one pixel wide rays. All these rays are more or less superimposed resulting in this 
  97.           glittering effect you get when you move this slider.
  98.         </p>
  99.           <p>
  100.           <span class="guilabel">Random Hue</span>: Colours rays at random. (0-360) value seems to be a range in 
  101.           HSV color circle.
  102.         </p>
  103.         </dd>
  104.       </div>
  105.     </div>
  106.     <div class="navfooter">
  107.       <hr />
  108.       <table width="100%" summary="Navigation footer">
  109.         <tr>
  110.           <td width="40%" align="left"><a accesskey="p" href="ch05s09s05.html">Prev</a>┬á</td>
  111.           <td width="20%" align="center">
  112.             <a accesskey="u" href="ch05s09.html">Up</a>
  113.           </td>
  114.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s10.html">Next</a></td>
  115.         </tr>
  116.         <tr>
  117.           <td width="40%" align="left" valign="top">9.5.┬áSparkle┬á</td>
  118.           <td width="20%" align="center">
  119.             <a accesskey="h" href="index.html">Home</a>
  120.           </td>
  121.           <td width="40%" align="right" valign="top">┬á10.┬áDistort filters</td>
  122.         </tr>
  123.       </table>
  124.     </div>
  125.   </body>
  126. </html>
  127.