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  4.   <head>
  5.     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6.     <title>9.3.┬áGflare</title>
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  11.     <link rel="up" href="ch05s09.html" title="9.┬áLight Effects filters" />
  12.     <link rel="previous" href="ch05s09s02.html" title="9.2.┬áFlareFX" />
  13.     <link rel="next" href="ch05s09s04.html" title="9.4.┬áLighting Effects" />
  14.   </head>
  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">9.3.┬áGflare</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s09s02.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="ch05s09s04.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-Gflare"></a>9.3.┬áGflare</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2977386" class="indexterm"></a>
  39.       <div class="mediaobject">
  40.         <img src="../images/filters/filters-light-gflare.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="id2977407"></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/<span class="accel">G</span>flare</span>.
  54.     </p>
  55.         <p>
  56.       Gflare effect reminds the effect you get when you take a photograph of a blinding light source, 
  57.       with a halo and radiations around the source. The Gflare image has three components: 
  58.       <span class="emphasis"><em>Glow</em></span> which is the big central fireball, <span class="emphasis"><em>Rays</em></span> and 
  59.       <span class="emphasis"><em>Second Flares</em></span>  
  60.     </p>
  61.       </div>
  62.       <div class="simplesect" lang="en" xml:lang="en">
  63.         <div class="titlepage">
  64.           <div>
  65.             <div>
  66.               <h4 class="title"><a id="id2977452"></a>Preview</h4>
  67.             </div>
  68.           </div>
  69.           <div></div>
  70.         </div>
  71.         <dt></dt>
  72.         <dd>
  73.           <p>
  74.           When <span class="guilabel">Auto Update Preview</span> is checked, parameter setting results are 
  75.           interactively displayed in preview without modifying the image until you click on 
  76.           <span class="guilabel">OK</span> button.
  77.         </p>
  78.         </dd>
  79.       </div>
  80.       <div class="simplesect" lang="en" xml:lang="en">
  81.         <div class="titlepage">
  82.           <div>
  83.             <div>
  84.               <h4 class="title"><a id="id2977482"></a>Settings</h4>
  85.             </div>
  86.           </div>
  87.           <div></div>
  88.         </div>
  89.         <p>
  90.       The Settings tab allows you to set manually the parameters while the Selector tab let you 
  91.       choose presets in a list.
  92.     </p>
  93.         <p>
  94.       <span class="guilabel">Center</span>:  You can set there X and Y (pixels) coordinates of glint. 
  95.       The coordinate origin is at upper left corner 
  96.     </p>
  97.         <p>
  98.       <span class="guilabel">Radius</span>: The radius of the effect. Don't be affraid to use the box with the
  99.       digits instead the slider a bit limited.
  100.     </p>
  101.         <p>
  102.       <span class="guilabel">Rotation</span>: Turn the effect.
  103.     </p>
  104.         <p>
  105.       <span class="guilabel">Hue Rotation</span>: Change the tint (color) of the effect.
  106.     </p>
  107.         <p>
  108.       <span class="guilabel">Vector Angle</span>: Turn the Second flares.
  109.     </p>
  110.         <p>
  111.       <span class="guilabel">Longueur du vecteur</span>: Vary the distance applied for the Second flares.
  112.     </p>
  113.         <p>
  114.       <span class="guilabel">Adaptive Supesampling</span>: Settings of the antialiasing following parametres
  115.       like Depth and Threshold.
  116.     </p>
  117.       </div>
  118.       <div class="simplesect" lang="en" xml:lang="en">
  119.         <div class="titlepage">
  120.           <div>
  121.             <div>
  122.               <h4 class="title"><a id="id2977586"></a>Selector</h4>
  123.             </div>
  124.           </div>
  125.           <div></div>
  126.         </div>
  127.         <p>
  128.       The Selector tab allows you to select a Gflare pattern, to change it and save it.
  129.     </p>
  130.         <dt>
  131.           <span class="term">New</span>
  132.         </dt>
  133.         <dd>
  134.           <p>
  135.           When you click on this button, you open the selected Gflare pattern and you can use it 
  136.           to create a new one with a new name.
  137.         </p>
  138.         </dd>
  139.         <dt>
  140.           <span class="term">Edit</span>
  141.         </dt>
  142.         <dd>
  143.           <p>
  144.           This button brings up the Gflare Editor (see below).
  145.         </p>
  146.         </dd>
  147.         <dt>
  148.           <span class="term">Copy</span>
  149.         </dt>
  150.         <dd>
  151.           <p>
  152.           This button allows you to save the modified Glare pattern, renaming it.
  153.         </p>
  154.         </dd>
  155.         <dt>
  156.           <span class="term">Delete</span>
  157.         </dt>
  158.         <dd>
  159.           <p>
  160.           This button deletes the selected Gflare pattern.
  161.         </p>
  162.         </dd>
  163.       </div>
  164.       <div class="simplesect" lang="en" xml:lang="en">
  165.         <div class="titlepage">
  166.           <div>
  167.             <div>
  168.               <h4 class="title"><a id="id2977658"></a>Gflare Editor</h4>
  169.             </div>
  170.           </div>
  171.           <div></div>
  172.         </div>
  173.         <div class="mediaobject">
  174.           <img src="../images/filters/filters-light-gflare-editor.png" />
  175.         </div>
  176.         <div class="variablelist">
  177.           <dl>
  178.             <dt>
  179.               <span class="term">General</span>
  180.             </dt>
  181.             <dd>
  182.               <p>
  183.                 <b>Glow Paint Options.┬á</b>
  184.               </p>
  185.               <div class="orderedlist">
  186.                 <p>
  187.                 <span class="guilabel">Opacity</span>: Slider and input box give more opacity to glow (0-100).
  188.               </p>
  189.                 <p>
  190.                 <span class="guilabel">Paint Mode</span>: You can choose between four modes:
  191.               </p>
  192.                 <div class="itemizedlist">
  193.                   <ul type="disc">
  194.                     <li>
  195.                       <p>
  196.                     <span class="emphasis"><em>Normal</em></span>: In this mode, the glow covers the image without taking 
  197.                     in account what is beneath.
  198.                   </p>
  199.                       <p>
  200.                     <span class="emphasis"><em>Addition</em></span>: Pixel RGB values of glow are added to RGB values 
  201.                     of the corresponding pixels in image. So colors go lighter and white areas may 
  202.                     appear.
  203.                   </p>
  204.                       <p>
  205.                     <span class="emphasis"><em>Overlay</em></span>: Light/Dark areas of glow enhance corresponding 
  206.                     light/dark areas of image.
  207.                   </p>
  208.                       <p>
  209.                     <span class="emphasis"><em>Screen</em></span>: Dark areas of image are enlightened by corresponding 
  210.                     light areas of glow. Imagin two slides projected onto the same screen.
  211.                   </p>
  212.                     </li>
  213.                   </ul>
  214.                 </div>
  215.                 <ol type="1"></ol>
  216.               </div>
  217.               <p><b>Rays Paint Options.┬á</b>
  218.               Options are the same as for "Glow".
  219.             </p>
  220.               <p><b>Second Flares Paint Options.┬á</b>
  221.               Options are the same as for "Glow". 
  222.             </p>
  223.             </dd>
  224.             <dt>
  225.               <span class="term">Glow</span>
  226.             </dt>
  227.             <dd>
  228.               <p>
  229.                 <b>Gradients.┬á</b>
  230.               </p>
  231.               <div class="orderedlist">
  232.                 <p>
  233.                 By clicking on rectangular buttons, you develop a long list of gradients. 
  234.                 "%" gradients belong to the Editor.
  235.               </p>
  236.                 <p>
  237.                 <span class="guilabel">Radial gradient</span>: The selected gradient is drawn radially, 
  238.                 from center to edge.
  239.               </p>
  240.                 <p>
  241.                 <span class="guilabel">Angular gradient</span>: The selected gradient develops around 
  242.                 center, counter-clockwise, starting from three o'clock if "Rotation" parameter 
  243.                 is set to 0. Radial and angular gradients are combined according to the 
  244.                 Multiply mode: light areas are enhanced and colors are mixed according to CMYK 
  245.                 color system (that of your printer).
  246.               </p>
  247.                 <p>
  248.                 <span class="guilabel">Angular size gradient</span>: This is a gradient of radius size which 
  249.                 develops angularly. Radius is controled according to gradient Luminosity: 
  250.                 if luminosity is zero (black), radius is 0%. If luminosity is 100% (white), radius 
  251.                 is also 100%.
  252.               </p>
  253.                 <ol type="1"></ol>
  254.               </div>
  255.               <p>
  256.                 <b>Parameters.┬á</b>
  257.               </p>
  258.               <div class="orderedlist">
  259.                 <p>
  260.                 <span class="guilabel">Size (%)</span>: Sets size (%) of glow (0-200).
  261.               </p>
  262.                 <p>
  263.                 <span class="guilabel">Rotation</span>: Sets the origin of the angular gradient (-180 +180).
  264.               </p>
  265.                 <p>
  266.                 <span class="guilabel">Hue rotation</span>: Sets glow color, according to the HSV color 
  267.                 circle (-180 +180).
  268.               </p>
  269.                 <ol type="1"></ol>
  270.               </div>
  271.             </dd>
  272.             <dt>
  273.               <span class="term">Rays</span>
  274.             </dt>
  275.             <dd>
  276.               <p>
  277.                 <b>Gradients.┬á</b>
  278.               </p>
  279.               <div class="orderedlist">
  280.                 <p>
  281.                 Options are the same as in Glow.
  282.               </p>
  283.                 <ol type="1"></ol>
  284.               </div>
  285.               <p>
  286.                 <b>Parameters.┬á</b>
  287.               </p>
  288.               <div class="orderedlist">
  289.                 <p>
  290.                 Three first options are the same as in Glow. Two are new:
  291.               </p>
  292.                 <p>
  293.                 <span class="guilabel"># of spikes</span>:This option determines the number of spikes (1-300)
  294.                 but also their texture.  
  295.               </p>
  296.                 <p>
  297.                 <span class="guilabel">Spike Thickness</span>: When spikes get wider (1-100), they look like 
  298.                 flower petals
  299.               </p>
  300.                 <ol type="1"></ol>
  301.               </div>
  302.             </dd>
  303.             <dt>
  304.               <span class="term">Second Flares</span>
  305.             </dt>
  306.             <dd>
  307.               <p>
  308.                 <b>Gradients.┬á</b>
  309.               </p>
  310.               <div class="orderedlist">
  311.                 <p>
  312.                 Options are the same as in Glow.
  313.               </p>
  314.                 <ol type="1"></ol>
  315.               </div>
  316.               <p>
  317.                 <b>Parameters.┬á</b>
  318.               </p>
  319.               <div class="orderedlist">
  320.                 <p>
  321.                 Options are the same as in Glow.
  322.               </p>
  323.                 <ol type="1"></ol>
  324.               </div>
  325.               <p>
  326.                 <b>Shape of Second Flares.┬á</b>
  327.               </p>
  328.               <div class="orderedlist">
  329.                 <p>
  330.                 Second flares, these satellites of the main flare, may have two shapes: 
  331.                 <span class="emphasis"><em>Circle</em></span> and <span class="emphasis"><em>Polygon</em></span>. You can set the 
  332.                 <span class="emphasis"><em>Number</em></span> polygon sides. The option accepts 1 side (!), not 2.
  333.               </p>
  334.                 <ol type="1"></ol>
  335.               </div>
  336.               <p>
  337.                 <b>Random seed and Randomize.┬á</b>
  338.               </p>
  339.               <div class="orderedlist">
  340.                 <p>
  341.                 <span class="guilabel">Random Seed</span>: The random generator will use this value as a 
  342.                 seed to generate random. You can use the same value to repeat the same "random".
  343.               </p>
  344.                 <p>
  345.                 <span class="guilabel">Randomize</span>: When you click on this button, you produce a 
  346.                 random seed that will be used by the random generator. It is each time different.
  347.               </p>
  348.                 <ol type="1"></ol>
  349.               </div>
  350.             </dd>
  351.           </dl>
  352.         </div>
  353.       </div>
  354.     </div>
  355.     <div class="navfooter">
  356.       <hr />
  357.       <table width="100%" summary="Navigation footer">
  358.         <tr>
  359.           <td width="40%" align="left"><a accesskey="p" href="ch05s09s02.html">Prev</a>┬á</td>
  360.           <td width="20%" align="center">
  361.             <a accesskey="u" href="ch05s09.html">Up</a>
  362.           </td>
  363.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s09s04.html">Next</a></td>
  364.         </tr>
  365.         <tr>
  366.           <td width="40%" align="left" valign="top">9.2.┬áFlareFX┬á</td>
  367.           <td width="20%" align="center">
  368.             <a accesskey="h" href="index.html">Home</a>
  369.           </td>
  370.           <td width="40%" align="right" valign="top">┬á9.4.┬áLighting Effects</td>
  371.         </tr>
  372.       </table>
  373.     </div>
  374.   </body>
  375. </html>
  376.