py
/
gaussian-splatting-my


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178
							

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8"  />
  <meta name="viewport" content="width=device-width, initial-scale=1"  />
  <title>ImageMagick – MagickCore, C API: Add a Special Effect</title>
  <meta name="application-name" content="ImageMagick" />
  <meta name="description" content="" />
  <meta name="application-url" content="https://imagemagick.org" />
  <meta name="generator" content="PHP" />
  <meta name="keywords" content="magickcore, c, api:, add, a, special, effect, image processing software" />
  <meta name="rating" content="GENERAL" />
  <meta name="robots" content="INDEX, FOLLOW" />
  <meta name="generator" content="ImageMagick Studio LLC" />
  <meta name="author" content="ImageMagick Studio LLC" />
  <meta name="revisit-after" content="2 DAYS" />
  <meta name="resource-type" content="document" />
  <meta name="copyright" content="Copyright (c) 1999 ImageMagick Studio LLC" />
  <meta name="distribution" content="Global" />
  <meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1" />
  <meta property='og:url' content='../../' />
  <meta property='og:title' content='ImageMagick' />
  <meta property='og:image' content='../../../images/logo.png' />
  <meta property='og:type' content='website' />
  <meta property='og:site_name' content='ImageMagick' />
  <meta property='og:description' content="Create, Edit, Compose, or Convert Digital Images" />
  <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" />
  <link href="fx.html" rel="canonical" />
  <link href="../../../images/wand.png" rel="icon" />
  <link href="../../../images/wand.ico" rel="shortcut icon" />
  <link href="../../assets/magick.css" rel="stylesheet" />
</head>
<body>
  <nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top">
  <div class="container-fluid">
    <a class="navbar-brand" href="../../"><img class="d-block" id="icon" alt="ImageMagick" width="32" height="32" src="../../../images/wand.ico"/></a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#magick-navbars" aria-controls="magick-navbars" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

    <div class="collapse navbar-collapse" id="magick-navbars">
      <ul class="navbar-nav me-auto mb-2 mb-md-0">
        <li class="nav-item">
          <a class="nav-link " href="../../www/download.html">Download</a>
        </li>
        <li class="nav-item">
          <a class="nav-link " href="../../www/command-line-tools.html">Tools</a>
        </li>
        <li class="nav-item">
          <a class="nav-link " href="../../www/command-line-processing.html">CLI</a>
        </li>
        <li class="nav-item">
          <a class="nav-link " href="../../www/develop.html">Develop</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" target="_blank" href="https://github.com/ImageMagick/ImageMagick/discussions">Community</a>
        </li>
        <li class="nav-item">
          <iframe src="https://github.com/sponsors/ImageMagick/button" title="Sponsor ImageMagick" height="35" width="107" style="border: 0;"></iframe>
        </li>
      </ul>
      <form class="d-flex form-inline" action="https://imagemagick.org/script/search.php">
        <input class="form-control me-2" type="text" name="q" placeholder="Search" aria-label="Search">
        <button class="btn btn-outline-success" type="submit" name="sa">Search</button>
      </form>
    </div>
  </div>
  </nav>

  <div class="container">
    <script async="async" src="https://localhost/pagead/js/adsbygoogle.js"></script>
    <ins class="adsbygoogle"
      style="display:block"
      data-ad-client="ca-pub-3129977114552745"
      data-ad-slot="6345125851"
      data-full-width-responsive="true"
      data-ad-format="horizontal"></ins>
    <script>
      (adsbygoogle = window.adsbygoogle || []).push({});
    </script>

  </div>

  <main class="container">
  <div class="magick-template">
<br/>
<div class="btn-group">
<button class="btn btn-secondary dropdown-toggle" type="button" id="defaultDropdown" data-bs-toggle="dropdown" data-bs-auto-close="true" aria-expanded="false">
  Select API Method
</button>
<ul class="dropdown-menu pre-scrollable" aria-labelledby="defaultDropdown">
</ul>
</div>
<br/>
<br/>
<div class="magick-header">
<h2><a href="../../api/MagickCore/fx_8c.html" id="pfx-&gt;exception,_GetMagickModule">pfx-&gt;exception, GetMagickModule</a></h2>

<p>pfx-&gt;exception, GetMagickModule(), OptionError, "ImgNum", "lu bad for ImgListLen lu", (unsigned long) i, (unsigned long) pfx-&gt;ImgListLen); i = -1; } return i; }</p>

<p>#define WHICH_ATTR_CHAN \ (pel-&gt;ChannelQual == NO_CHAN_QUAL) ? CompositePixelChannel : \ (pel-&gt;ChannelQual == THIS_CHANNEL) ? channel : pel-&gt;ChannelQual</p>

<p>#define WHICH_NON_ATTR_CHAN \ (pel-&gt;ChannelQual == NO_CHAN_QUAL || \ pel-&gt;ChannelQual == THIS_CHANNEL || \ pel-&gt;ChannelQual == CompositePixelChannel \ ) ? (channel == CompositePixelChannel ? RedPixelChannel: channel) \ : pel-&gt;ChannelQual</p>

<p>static fxFltType GetHslFlt (FxInfo * pfx, ssize_t ImgNum, const fxFltType fx, const fxFltType fy, PixelChannel channel) { Image * img = pfx-&gt;Images[ImgNum];</p>

<p>double red, green, blue; double hue=0, saturation=0, lightness=0;</p>

<p>MagickBooleanType okay = MagickTrue; if(!InterpolatePixelChannel (img, pfx-&gt;Imgs[ImgNum].View, RedPixelChannel, img-&gt;interpolate, (double) fx, (double) fy, &amp;red, pfx-&gt;exception)) okay = MagickFalse; if(!InterpolatePixelChannel (img, pfx-&gt;Imgs[ImgNum].View, GreenPixelChannel, img-&gt;interpolate, (double) fx, (double) fy, &amp;green, pfx-&gt;exception)) okay = MagickFalse; if(!InterpolatePixelChannel (img, pfx-&gt;Imgs[ImgNum].View, BluePixelChannel, img-&gt;interpolate, (double) fx, (double) fy, &amp;blue, pfx-&gt;exception)) okay = MagickFalse;</p>

<p>if (!okay) (void) ThrowMagickException ( pfx-&gt;exception, GetMagickModule(), OptionError, "GetHslFlt failure", "lu g,g i", (unsigned long) ImgNum, (double) fx, (double) fy, channel);</p>

<p>ConvertRGBToHSL ( red, green, blue, &amp;hue, &amp;saturation, &amp;lightness);</p>

<p>if (channel == HUE_CHANNEL)   return hue; if (channel == SAT_CHANNEL)   return saturation; if (channel == LIGHT_CHANNEL) return lightness;</p>

<p>return 0.0; }</p>

<p>static fxFltType GetHslInt (FxInfo * pfx, ssize_t ImgNum, const ssize_t imgx, const ssize_t imgy, PixelChannel channel) { Image * img = pfx-&gt;Images[ImgNum];</p>

<p>double hue=0, saturation=0, lightness=0;</p>

<p>const Quantum * p = GetCacheViewVirtualPixels (pfx-&gt;Imgs[ImgNum].View, imgx, imgy, 1, 1, pfx-&gt;exception); if (p == (const Quantum *) NULL) { (void) ThrowMagickException (pfx-&gt;exception,GetMagickModule(), OptionError,"GetHslInt failure","lu li,li i",(unsigned long) ImgNum, (long) imgx,(long) imgy,channel); return(0.0); }</p>

<p>ConvertRGBToHSL ( GetPixelRed (img, p), GetPixelGreen (img, p), GetPixelBlue (img, p), &amp;hue, &amp;saturation, &amp;lightness);</p>

<p>if (channel == HUE_CHANNEL)   return hue; if (channel == SAT_CHANNEL)   return saturation; if (channel == LIGHT_CHANNEL) return lightness;</p>

<p>return 0.0; }</p>

<p>static inline fxFltType GetIntensity (FxInfo * pfx, ssize_t ImgNum, const fxFltType fx, const fxFltType fy) { Quantum quantum_pixel[MaxPixelChannels];</p>

<p>PixelInfo pixelinf;</p>

<p>Image * img = pfx-&gt;Images[ImgNum];</p>

<p>(void) GetPixelInfo (img, &amp;pixelinf);</p>

<p>if (!InterpolatePixelInfo (img, pfx-&gt;Imgs[pfx-&gt;ImgNum].View, img-&gt;interpolate, (double) fx, (double) fy, &amp;pixelinf, pfx-&gt;exception)) { (void) ThrowMagickException ( pfx-&gt;exception, GetMagickModule(), OptionError, "GetIntensity failure", "lu g,g", (unsigned long) ImgNum, (double) fx, (double) fy); }</p>

<p>SetPixelViaPixelInfo (img, &amp;pixelinf, quantum_pixel); return QuantumScale * GetPixelIntensity (img, quantum_pixel); }</p>

<p>static MagickBooleanType ExecuteRPN (FxInfo * pfx, fxRtT * pfxrt, fxFltType *result, const PixelChannel channel, const ssize_t imgx, const ssize_t imgy) { const Quantum * p = pfxrt-&gt;thisPixel; fxFltType regA=0, regB=0, regC=0, regD=0, regE=0; Image * img = pfx-&gt;image; ChannelStatistics * cs = NULL; MagickBooleanType NeedRelinq = MagickFalse; double hue=0, saturation=0, lightness=0; int i;</p>

<p>/* For -fx, this sets p to ImgNum 0. for [fx:...], this sets p to the current image. Similarly img. </p>
</div>
  </div>
  </main><!-- /.container -->
  <footer class="magick-footer">
    <div class="container-fluid">
      <a href="../../www/security-policy.html">Security</a> •
      <a href="../../www/news.html">News</a>
     
      <a href="fx.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../../images/wand.ico"/></a>
     
      <a href="../../www/links.html">Related</a> •
      <a href="../../www/sitemap.html">Sitemap</a>
   <br/>
     <a href="../../www/support.html">Sponsor</a> •
     <a href="../../www/cite.html">Cite</a> •
     <a href="http://pgp.mit.edu/pks/lookup?op=get&amp;search=0x89AB63D48277377A">Public Key</a> •
     <a href="../../www/contact.html">Contact Us</a>
   <br/>
     <a href="https://github.com/imagemagick/imagemagick" target="_blank" rel="noopener" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 499.36" width="2%" height="2%" role="img" focusable="false"><title>GitHub</title><path fill="currentColor" fill-rule="evenodd" d="M256 0C114.64 0 0 114.61 0 256c0 113.09 73.34 209 175.08 242.9 12.8 2.35 17.47-5.56 17.47-12.34 0-6.08-.22-22.18-.35-43.54-71.2 15.49-86.2-34.34-86.2-34.34-11.64-29.57-28.42-37.45-28.42-37.45-23.27-15.84 1.73-15.55 1.73-15.55 25.69 1.81 39.21 26.38 39.21 26.38 22.84 39.12 59.92 27.82 74.5 21.27 2.33-16.54 8.94-27.82 16.25-34.22-56.84-6.43-116.6-28.43-116.6-126.49 0-27.95 10-50.8 26.35-68.69-2.63-6.48-11.42-32.5 2.51-67.75 0 0 21.49-6.88 70.4 26.24a242.65 242.65 0 0 1 128.18 0c48.87-33.13 70.33-26.24 70.33-26.24 14 35.25 5.18 61.27 2.55 67.75 16.41 17.9 26.31 40.75 26.31 68.69 0 98.35-59.85 120-116.88 126.32 9.19 7.9 17.38 23.53 17.38 47.41 0 34.22-.31 61.83-.31 70.23 0 6.85 4.61 14.81 17.6 12.31C438.72 464.97 512 369.08 512 256.02 512 114.62 397.37 0 256 0z"/></svg></a> •
     <a href="https://twitter.com/imagemagick" target="_blank" rel="noopener" aria-label="Twitter"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 300 300" width="2%" height="2%" role="img" focusable="false"><title>Twitter</title><path d="M178.57 127.15 290.27 0h-26.46l-97.03 110.38L89.34 0H0l117.13 166.93L0 300.25h26.46l102.4-116.59 81.8 116.59h89.34M36.01 19.54H76.66l187.13 262.13h-40.66"/></svg></a>
    <br/>
    <small>Copyright © 1999 ImageMagick Studio LLC</small>
    </div>
  </footer>

  <!-- Javascript assets -->
  <script src="../../assets/magick.js" ></script>
  </body>
</html>