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  6.     <title>11.14.¬† Fractal Explorer</title>
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  20.         <tr>
  21.           <th colspan="3" align="center">11.14.¬†
  22.     <span lang="en" xml:lang="en">Fractal Explorer</span>
  23.   </th>
  24.         </tr>
  25.         <tr>
  26.           <td width="20%" align="left"><a accesskey="p" href="plug-in-sinus.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  27.           <th width="60%" align="center">11.¬†
  28.     <span lang="en" xml:lang="en">Rendering Filters</span>
  29.   </th>
  30.           <td width="20%" align="right">¬†<a accesskey="n" href="plug-in-gfig.html"><img src="../images/next.png" alt="Next" /></a></td>
  31.         </tr>
  32.       </table>
  33.       <hr />
  34.     </div>
  35.     <div class="sect2" lang="en" xml:lang="en">
  36.       <div class="titlepage">
  37.         <div>
  38.           <div>
  39.             <h3 class="title"><a id="plug-in-fractalexplorer"></a>11.14.¬†
  40.     <span lang="en" xml:lang="en">Fractal Explorer</span>
  41.   </h3>
  42.           </div>
  43.         </div>
  44.       </div>
  45.       <a id="id2775588" class="indexterm"></a>
  46.       <a id="id2775606" class="indexterm"></a>
  47.       <div class="sect3" lang="en" xml:lang="en">
  48.         <div class="titlepage">
  49.           <div>
  50.             <div>
  51.               <h4 class="title"><a id="id2775615"></a>11.14.1.¬†
  52.       <span lang="en" xml:lang="en">Overview</span>
  53.     </h4>
  54.             </div>
  55.           </div>
  56.         </div>
  57.         <div class="figure">
  58.           <a id="id2775625"></a>
  59.           <p class="title">
  60.             <b>Figure¬†16.267.¬†
  61.         <span lang="en" xml:lang="en">
  62.           The same image, before and after applying Fractal Explorer filter
  63.         </span>
  64.       </b>
  65.           </p>
  66.           <div class="figure-contents">
  67.             <div class="mediaobject">
  68.               <img src="../images/filters/examples/render-taj-fractalexplorer.jpg" alt="The same image, before and after applying Fractal Explorer filter" />
  69.               <div class="caption">
  70.                 <p>
  71.             Filter ‚Äú<span class="quote">Fractal Explorer</span>‚Äù applied
  72.           </p>
  73.               </div>
  74.             </div>
  75.           </div>
  76.         </div>
  77.         <br class="figure-break" />
  78.         <p>
  79.       With this filter, you can create fractals and multicolored pictures
  80.       verging to chaos. Unlike the <a class="link" href="plug-in-ifsfractal.html" title="11.5.¬† IFS Fractal">IFS Compose</a> filter, with which you
  81.       can fix the fractal structure precisely, this filter lets you perform
  82.       fractals simply.
  83.     </p>
  84.       </div>
  85.       <div class="sect3" lang="en" xml:lang="en">
  86.         <div class="titlepage">
  87.           <div>
  88.             <div>
  89.               <h4 class="title"><a id="id2775687"></a>11.14.2.¬†
  90.       <span lang="en" xml:lang="en">Starting filter</span>
  91.     </h4>
  92.             </div>
  93.           </div>
  94.         </div>
  95.         <p>
  96.       You can find this filter through
  97.       <span class="guimenu">Filte<span class="accel">r</span>s</span> ‚Üí <span class="guisubmenu"><span class="accel">R</span>ender</span> ‚Üí <span class="guisubmenu"><span class="accel">N</span>ature</span> ‚Üí <span class="guimenuitem"><span class="accel">F</span>ractal Explorer</span>
  98.     </p>
  99.       </div>
  100.       <div class="sect3" lang="en" xml:lang="en">
  101.         <div class="titlepage">
  102.           <div>
  103.             <div>
  104.               <h4 class="title"><a id="id2775743"></a>11.14.3.¬†
  105.       <span lang="en" xml:lang="en">Options</span>
  106.     </h4>
  107.             </div>
  108.           </div>
  109.         </div>
  110.         <div class="figure">
  111.           <a id="id2775754"></a>
  112.           <p class="title">
  113.             <b>Figure¬†16.268.¬†
  114.         <span lang="en" xml:lang="en">
  115.           ‚Äú<span class="quote">Parameters</span>‚Äù options for Fractal Explorer filter
  116.         </span>
  117.       </b>
  118.           </p>
  119.           <div class="figure-contents">
  120.             <div class="mediaobject">
  121.               <img src="../images/filters/options-render-fractalexplorer1.png" alt="Parameters options for Fractal Explorer filter" />
  122.             </div>
  123.           </div>
  124.         </div>
  125.         <br class="figure-break" />
  126.         <div class="variablelist">
  127.           <dl>
  128.             <dt>
  129.               <span class="term">Preview domain</span>
  130.             </dt>
  131.             <dd>
  132.               <p>
  133.             Uncheck the <span class="guilabel">Real time preview</span> only if your
  134.             computer is slow. In this case, you can update preview by
  135.             clicking on the <span class="guibutton">Redraw</span> button.
  136.           </p>
  137.               <p>
  138.             By clicking-dragging mouse pointer on preview, you can draw a
  139.             rectangle delimiting an area which will be zoomed.
  140.           </p>
  141.             </dd>
  142.             <dt>
  143.               <span class="term">Zoom</span>
  144.             </dt>
  145.             <dd>
  146.               <p>
  147.             You have there some options to zoom in or zoom out. The
  148.             <span class="guibutton">Undo</span> allows you to return to previous
  149.             state, before zooming. The <span class="guibutton">Redo</span> allows
  150.             you to reestablish the zoom you had undone, without having to
  151.             re-create it with the zoom-in button.
  152.           </p>
  153.             </dd>
  154.             <dt>
  155.               <span class="term">Parameters tab</span>
  156.             </dt>
  157.             <dd>
  158.               <p>
  159.             This tab contains some options to set fractal calculation and
  160.             select fractal type.
  161.           </p>
  162.               <div class="variablelist">
  163.                 <dl>
  164.                   <dt>
  165.                     <span class="term">Fractal Parameters</span>
  166.                   </dt>
  167.                   <dd>
  168.                     <p>
  169.                   here, you have sliders and input boxes to set fractal
  170.                   spreading, repetition and aspect.
  171.                 </p>
  172.                     <div class="variablelist">
  173.                       <dl>
  174.                         <dt>
  175.                           <span class="term">XMIN; XMAX; YMIN; YMAX</span>
  176.                         </dt>
  177.                         <dd>
  178.                           <p>
  179.                         You can set fractal spreading between a MINimum and
  180.                         a MAXimum, in the horizontal (X) and/or vertical (Y)
  181.                         directions. Values are from -3.0 to 3.0.
  182.                       </p>
  183.                         </dd>
  184.                         <dt>
  185.                           <span class="term">ITER</span>
  186.                         </dt>
  187.                         <dd>
  188.                           <p>
  189.                         With this parameter, you can set fractal iteration,
  190.                         repetition and so detail. Values are from 0.0 to
  191.                         1000.0
  192.                       </p>
  193.                         </dd>
  194.                         <dt>
  195.                           <span class="term">CX; CY</span>
  196.                         </dt>
  197.                         <dd>
  198.                           <p>
  199.                         With these parameters, you can change fractal
  200.                         aspect, in the horizontal (X) and/or vertical (Y)
  201.                         directions, except for Mandelbrot and Sierpinski
  202.                         types.
  203.                       </p>
  204.                         </dd>
  205.                         <dt>
  206.                           <span class="term">Open; Reset; Save</span>
  207.                         </dt>
  208.                         <dd>
  209.                           <p>
  210.                         With these three buttons, you can save your work
  211.                         with all its parameters, open a previously saved
  212.                         fractal, or return to the initial state before all
  213.                         modifications.
  214.                       </p>
  215.                         </dd>
  216.                       </dl>
  217.                     </div>
  218.                   </dd>
  219.                   <dt>
  220.                     <span class="term">Fractal type</span>
  221.                   </dt>
  222.                   <dd>
  223.                     <p>
  224.                   You can choose what fractal type will be, for instance
  225.                   <span class="guilabel">Mandelbrot</span>, <span class="guilabel">Julia</span>,
  226.                   <span class="guilabel">Barnsley</span> or
  227.                   <span class="guilabel">Sierpinski</span>.
  228.                 </p>
  229.                   </dd>
  230.                 </dl>
  231.               </div>
  232.             </dd>
  233.             <dt>
  234.               <span class="term">Colors tab</span>
  235.             </dt>
  236.             <dd>
  237.               <div class="figure">
  238.                 <a id="id2776047"></a>
  239.                 <p class="title">
  240.                   <b>Figure¬†16.269.¬†
  241.               <span lang="en" xml:lang="en">
  242.                 Color tab options
  243.               </span>
  244.             </b>
  245.                 </p>
  246.                 <div class="figure-contents">
  247.                   <div class="mediaobject">
  248.                     <img src="../images/filters/options-render-fractalexplorer2.png" alt="Color tab options" />
  249.                   </div>
  250.                 </div>
  251.               </div>
  252.               <br class="figure-break" />
  253.               <p>
  254.             This tab contains options for fractal color setting.
  255.           </p>
  256.               <div class="variablelist">
  257.                 <dl>
  258.                   <dt>
  259.                     <span class="term">Color number</span>
  260.                   </dt>
  261.                   <dd>
  262.                     <p>
  263.                   This slider and its input boxes allow you to set the
  264.                   number of colors for the fractal, between 2 and 8192.
  265.                   A palette of these colors is displayed at the bottom of
  266.                   the tab. Actually, that's a gradient between colors in
  267.                   fractal: you can change colors with ‚Äú<span class="quote">Color intensity
  268.                   </span>‚Äù and ‚Äú<span class="quote">Color function </span>‚Äù options.
  269.                   Fractal colors don't depend on colors of the original
  270.                   image (you can use a white image for fractals as well).
  271.                 </p>
  272.                   </dd>
  273.                   <dt>
  274.                     <span class="term">Use loglog-smoothing</span>
  275.                   </dt>
  276.                   <dd>
  277.                     <p>
  278.                   If this option is checked, the band effect is smoothed.
  279.                 </p>
  280.                     <div class="figure">
  281.                       <a id="id2776137"></a>
  282.                       <p class="title">
  283.                         <b>Figure¬†16.270.¬†
  284.                     <span lang="en" xml:lang="en">Loglog smoothing example</span>
  285.                   </b>
  286.                       </p>
  287.                       <div class="figure-contents">
  288.                         <div class="mediaobject">
  289.                           <img src="../images/filters/examples/render-fractalexpl.png" alt="Loglog smoothing example" />
  290.                         </div>
  291.                       </div>
  292.                     </div>
  293.                     <br class="figure-break" />
  294.                   </dd>
  295.                   <dt>
  296.                     <span class="term">Color density</span>
  297.                   </dt>
  298.                   <dd>
  299.                     <p>
  300.                   These three sliders and their text-boxes let you set the
  301.                   color intensity in the three
  302.                   <span class="guilabel">Red</span>, <span class="guilabel">Green</span> and
  303.                   <span class="guilabel">Blue</span> color channels. Values vary from
  304.                   0.0 to 1.0.
  305.                 </p>
  306.                   </dd>
  307.                   <dt>
  308.                     <span class="term">Color function</span>
  309.                   </dt>
  310.                   <dd>
  311.                     <p>
  312.                   For the <span class="guilabel">Red</span>,
  313.                   <span class="guilabel">Green</span> and <span class="guilabel">Blue</span>
  314.                   color channels, you can select how color will be treated:
  315.                 </p>
  316.                     <div class="itemizedlist">
  317.                       <ul type="disc">
  318.                         <li>
  319.                           <p>
  320.                       <span class="guilabel">Sinus</span>: Color variations will be
  321.                       modulated according to the sinus function.
  322.                     </p>
  323.                         </li>
  324.                         <li>
  325.                           <p>
  326.                       <span class="guilabel">Cosinus</span>: Color densities will
  327.                       vary according to cosinus function.
  328.                     </p>
  329.                         </li>
  330.                         <li>
  331.                           <p>
  332.                       <span class="guilabel">None</span>: Color densities will vary
  333.                       linearly.
  334.                     </p>
  335.                         </li>
  336.                         <li>
  337.                           <p>
  338.                       <span class="guilabel">Inversion</span>: if you check this
  339.                       option, function values will be inverted.
  340.                     </p>
  341.                         </li>
  342.                       </ul>
  343.                     </div>
  344.                   </dd>
  345.                   <dt>
  346.                     <span class="term">Color Mode</span>
  347.                   </dt>
  348.                   <dd>
  349.                     <p>
  350.                   These options allow you to set where color values must be
  351.                   taken from.
  352.                 </p>
  353.                     <div class="itemizedlist">
  354.                       <ul type="disc">
  355.                         <li>
  356.                           <p>
  357.                       <span class="guilabel">As specified above</span>: Color values
  358.                       will be taken from the <span class="guilabel">Color density
  359.                       </span> options.
  360.                     </p>
  361.                         </li>
  362.                         <li>
  363.                           <p>
  364.                       <span class="guilabel">Apply active gradient to final image
  365.                       </span>: used colors will be that of active
  366.                       gradient. You should be able to select another gradient
  367.                       by clicking on the gradient source button.
  368.                     </p>
  369.                         </li>
  370.                       </ul>
  371.                     </div>
  372.                   </dd>
  373.                 </dl>
  374.               </div>
  375.             </dd>
  376.             <dt>
  377.               <span class="term">Fractals tab</span>
  378.             </dt>
  379.             <dd>
  380.               <div class="figure">
  381.                 <a id="id2776386"></a>
  382.                 <p class="title">
  383.                   <b>Figure¬†16.271.¬†
  384.               <span lang="en" xml:lang="en">
  385.                 ‚Äú<span class="quote">Fractal tab</span>‚Äù options
  386.               </span>
  387.             </b>
  388.                 </p>
  389.                 <div class="figure-contents">
  390.                   <div class="mediaobject">
  391.                     <img src="../images/filters/options-render-fractalexplorer3.png" alt="Fractal tab options" />
  392.                   </div>
  393.                 </div>
  394.               </div>
  395.               <br class="figure-break" />
  396.               <p>
  397.             This tab contains a big list of fractals with their parameters,
  398.             that you can use as a model: only click on the wanted one.
  399.           </p>
  400.               <p>
  401.             The <span class="guibutton">Refresh</span> allows you to update the
  402.             list if you have saved your work, without needing to re-start
  403.             GIMP. You can delete the selected fractal from the list by
  404.             clicking on the <span class="guibutton">Delete</span>.
  405.           </p>
  406.             </dd>
  407.           </dl>
  408.         </div>
  409.       </div>
  410.     </div>
  411.     <div class="navfooter">
  412.       <hr />
  413.       <table width="100%" summary="Navigation footer">
  414.         <tr>
  415.           <td width="40%" align="left"><a accesskey="p" href="plug-in-sinus.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  416.           <td width="20%" align="center">
  417.             <a accesskey="u" href="filters-render.html">
  418.               <img src="../images/up.png" alt="Up" />
  419.             </a>
  420.           </td>
  421.           <td width="40%" align="right">¬†<a accesskey="n" href="plug-in-gfig.html"><img src="../images/next.png" alt="Next" /></a></td>
  422.         </tr>
  423.         <tr>
  424.           <td width="40%" align="left" valign="top"><a accesskey="p" href="plug-in-sinus.html">11.13.¬†
  425.     <span lang="en" xml:lang="en">Sinus</span>
  426.   </a>¬†</td>
  427.           <td width="20%" align="center">
  428.             <a accesskey="h" href="index.html">
  429.               <img src="../images/home.png" alt="Home" />
  430.             </a>
  431.           </td>
  432.           <td width="40%" align="right" valign="top">¬†<a accesskey="n" href="plug-in-gfig.html">11.15.¬†
  433.     <span lang="en" xml:lang="en">Gfig</span>
  434.   </a></td>
  435.         </tr>
  436.       </table>
  437.     </div>
  438.   </body>
  439. </html>
  440.