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<div id="function.imagesetinterpolation" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">imagesetinterpolation</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.5.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">imagesetinterpolation</span> &mdash; <span class="dc-title">Define o método de interpolação</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.imagesetinterpolation-description">
  <h3 class="title">Descrição</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>imagesetinterpolation</strong></span>(<span class="methodparam"><span class="type"><a href="class.gdimage.php" class="type GdImage">GdImage</a></span> <code class="parameter">$image</code></span>, <span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$method</code><span class="initializer"> = <strong><code><a href="image.constants.php#constant.img-bilinear-fixed">IMG_BILINEAR_FIXED</a></code></strong></span></span>): <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span></div>

  <p class="para rdfs-comment">
   Define o método de interpolação, que afeta a renderização
   de várias funções da GD, tal como a função <span class="function"><a href="function.imagerotate.php" class="function">imagerotate()</a></span>.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.imagesetinterpolation-parameters">
  <h3 class="title">Parâmetros</h3>
  <p class="para">
   <dl>
    <dt>
<code class="parameter">image</code></dt><dd><p class="para">Um objeto <span class="classname"><a href="class.gdimage.php" class="classname">GdImage</a></span>, retornado por uma das funções de criação de imagem,
como <span class="function"><a href="function.imagecreatetruecolor.php" class="function">imagecreatetruecolor()</a></span>.</p></dd>
    
     <dt><code class="parameter">method</code></dt>
     <dd>
      <p class="para">
       O método de interpolação, que pode ser um dos seguintes:
       <ul class="itemizedlist">
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-bell">IMG_BELL</a></code></strong>: Filtro Bell.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-bessel">IMG_BESSEL</a></code></strong>: Filtro Bessel.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-bicubic">IMG_BICUBIC</a></code></strong>: Interpolação bicúbica.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-bicubic-fixed">IMG_BICUBIC_FIXED</a></code></strong>: Implementação de ponto fixo da interpolação bicúbica.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-bilinear-fixed">IMG_BILINEAR_FIXED</a></code></strong>: Implementação de ponto fixo da interpolação bilinear (<code class="literal">padrão (também na criação da imagem)</code>).
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-blackman">IMG_BLACKMAN</a></code></strong>: Função de janela Blackman.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-box">IMG_BOX</a></code></strong>: Filtro de desfoque de caixa.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-bspline">IMG_BSPLINE</a></code></strong>: Interpolação Spline.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-catmullrom">IMG_CATMULLROM</a></code></strong>: Interpolação Spline Hermite cúbica.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-gaussian">IMG_GAUSSIAN</a></code></strong>: Função gaussiana.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-generalized-cubic">IMG_GENERALIZED_CUBIC</a></code></strong>: Interpolação fractal spline cúbica generalizada.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-hermite">IMG_HERMITE</a></code></strong>: Interpolação Hermite.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-hamming">IMG_HAMMING</a></code></strong>: Filtro Hamming.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-hanning">IMG_HANNING</a></code></strong>: Filtro Hanning.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-mitchell">IMG_MITCHELL</a></code></strong>: Filtro Mitchell.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-power">IMG_POWER</a></code></strong>: Interpolation de potência.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-quadratic">IMG_QUADRATIC</a></code></strong>: Interpolação quadrática inversa.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-sinc">IMG_SINC</a></code></strong>: Função sinc.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-nearest-neighbour">IMG_NEAREST_NEIGHBOUR</a></code></strong>: Interpolação do ponto mais próximo.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-weighted4">IMG_WEIGHTED4</a></code></strong>: Filtro ponderado.
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="image.constants.php#constant.img-triangle">IMG_TRIANGLE</a></code></strong>: Interpolação triangular.
         </span>
        </li>
       </ul>
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.imagesetinterpolation-returnvalues">
  <h3 class="title">Valor Retornado</h3>
  <p class="para">
   Retorna <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong> em caso de sucesso ou <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> em caso de falha.
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.imagesetinterpolation-changelog">
  <h3 class="title">Registro de Alterações</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>Versão</th>
      <th>Descrição</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
 <td>8.0.0</td>
 <td>
  O parâmetro <code class="parameter">image</code> agora espera uma instância de <span class="classname"><a href="class.gdimage.php" class="classname">GdImage</a></span>;
  anteriormente, um <span class="type"><a href="language.types.resource.php" class="type resource">resource</a></span> <code class="literal">gd</code> válido era esperado.
 </td>
</tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 examples" id="refsect1-function.imagesetinterpolation-examples">
  <h3 class="title">Exemplos</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Exemplo #1 Exemplo de <span class="function"><strong>imagesetinterpolation()</strong></span></strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">// Carrega uma imagem<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreate</span><span style="color: #007700">(</span><span style="color: #0000BB">500</span><span style="color: #007700">, </span><span style="color: #0000BB">500</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Por padrão a interpolação é IMG_BILINEAR_FIXED, trocando<br />// para o filtro 'Mitchell':<br /></span><span style="color: #0000BB">imagesetinterpolation</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">, </span><span style="color: #0000BB">IMG_MITCHELL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Continua o trabalho com $im ...<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 notes" id="refsect1-function.imagesetinterpolation-notes">
  <h3 class="title">Notas</h3>
  <p class="para">
   Alterar o método de interpolação afeta as seguintes funções
   durante a renderização:

   <ul class="itemizedlist">
    <li class="listitem">
     <span class="simpara">
      <span class="function"><a href="function.imageaffine.php" class="function">imageaffine()</a></span>
     </span>
    </li>
    <li class="listitem">
     <span class="simpara">
      <span class="function"><a href="function.imagerotate.php" class="function">imagerotate()</a></span>
     </span>
    </li>
   </ul>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.imagesetinterpolation-seealso">
  <h3 class="title">Veja Também</h3>
  <ul class="simplelist">
   <li><span class="function"><a href="function.imagegetinterpolation.php" class="function" rel="rdfs-seeAlso">imagegetinterpolation()</a> - Obt&eacute;m o m&eacute;todo de interpola&ccedil;&atilde;o</span></li>
  </ul>
 </div>


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