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<div id="imagick.sparsecolorimage" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Imagick::sparseColorImage</h1>
  <p class="verinfo">(PECL imagick 2 &gt;= 2.3.0, PECL imagick 3)</p><p class="refpurpose"><span class="refname">Imagick::sparseColorImage</span> &mdash; <span class="dc-title">Interpola cores</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-imagick.sparsecolorimage-description">
  <h3 class="title">Descrição</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>Imagick::sparseColorImage</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$SPARSE_METHOD</code></span>, <span class="methodparam"><span class="type"><a href="language.types.array.php" class="type array">array</a></span> <code class="parameter">$arguments</code></span>, <span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$channel</code><span class="initializer"> = Imagick::CHANNEL_DEFAULT</span></span>): <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span></div>

  <p class="para rdfs-comment">
   Dado o array de argumentos contendo valores numéricos, este método interpola
   as cores encontradas nessas coordenadas em toda a imagem usando <code class="parameter">sparse_method</code>.
   Este método estará disponível se a extensão Imagick tiver sido compilada com a ImageMagick versão 6.4.5 ou superior.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-imagick.sparsecolorimage-parameters">
  <h3 class="title">Parâmetros</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">SPARSE_METHOD</code></dt>
     <dd>
      <p class="para">
       Consulte a lista de <a href="imagick.constants.php#imagick.constants.sparsecolormethod" class="link">constantes SPARSE_METHOD</a>.
      </p>
     </dd>
    
    
     <dt><code class="parameter">arguments</code></dt>
     <dd>
      <p class="para">
       Um array contendo as coordenadas.
       O array deve estar no formato <code class="literal">array(1,1, 2,45)</code>
      </p>
     </dd>
    
    
     <dt><code class="parameter">channel</code></dt>
     <dd>
      <p class="para">
       Fornece qualquer constante de canal que seja válida no modo de canal. Para aplicar a mais de um canal, <a href="imagick.constants.php#imagick.constants.channel" class="link">constantes de canal</a> devem ser combinadas usando operadores bit a bit. O padrão é <strong><code><a href="imagick.constants.php#imagick.constants.channel-default">Imagick::CHANNEL_DEFAULT</a></code></strong>. Consulte esta lista de <a href="imagick.constants.php#imagick.constants.channel" class="link">constantes de canal</a>
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-imagick.sparsecolorimage-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.
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-imagick.sparsecolorimage-errors">
  <h3 class="title">Erros/Exceções</h3>
  <p class="para">
   Lança uma exceção ImagickException em caso de erro.
  </p>
 </div>





 <div class="refsect1 examples" id="refsect1-imagick.sparsecolorimage-examples">
  <h3 class="title">Exemplos</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>Exemplo #1 <span class="function"><strong>Imagick::sparseColorImage()</strong></span> com SPARSECOLORMETHOD_BARYCENTRIC</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: #007700">function </span><span style="color: #0000BB">renderImageBarycentric2</span><span style="color: #007700">() {<br />        </span><span style="color: #0000BB">$points </span><span style="color: #007700">= [<br />            [</span><span style="color: #0000BB">0.30</span><span style="color: #007700">, </span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #DD0000">'red'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #DD0000">'blue'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0.60</span><span style="color: #007700">, </span><span style="color: #DD0000">'lime'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #0000BB">0.20</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow'</span><span style="color: #007700">],<br />        ];<br />        </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= </span><span style="color: #0000BB">createGradientImage</span><span style="color: #007700">(<br />            </span><span style="color: #0000BB">400</span><span style="color: #007700">, </span><span style="color: #0000BB">400</span><span style="color: #007700">,<br />            </span><span style="color: #0000BB">$points</span><span style="color: #007700">,<br />            </span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">SPARSECOLORMETHOD_BARYCENTRIC<br />        </span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br />        echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />    }<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>

    <div class="example" id="example-2">
    <p><strong>Exemplo #2 <span class="function"><strong>Imagick::sparseColorImage()</strong></span> com SPARSECOLORMETHOD_BILINEAR</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: #007700">function </span><span style="color: #0000BB">renderImageBilinear</span><span style="color: #007700">() {<br />        </span><span style="color: #0000BB">$points </span><span style="color: #007700">= [[</span><span style="color: #0000BB">0.30</span><span style="color: #007700">, </span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #DD0000">'red'</span><span style="color: #007700">], [</span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #DD0000">'blue'</span><span style="color: #007700">], [</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0.60</span><span style="color: #007700">, </span><span style="color: #DD0000">'lime'</span><span style="color: #007700">], [</span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #0000BB">0.20</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow'</span><span style="color: #007700">],];<br />        </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= </span><span style="color: #0000BB">createGradientImage</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">, </span><span style="color: #0000BB">$points</span><span style="color: #007700">, </span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">SPARSECOLORMETHOD_BILINEAR</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br />        echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />    }<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>

    <div class="example" id="example-3">
    <p><strong>Exemplo #3 <span class="function"><strong>Imagick::sparseColorImage()</strong></span>com SPARSECOLORMETHOD_SPEPARDS</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: #007700">function </span><span style="color: #0000BB">renderImageShepards</span><span style="color: #007700">() {<br />        </span><span style="color: #0000BB">$points </span><span style="color: #007700">= [<br />            [</span><span style="color: #0000BB">0.30</span><span style="color: #007700">, </span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #DD0000">'red'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #DD0000">'blue'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0.60</span><span style="color: #007700">, </span><span style="color: #DD0000">'lime'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #0000BB">0.20</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow'</span><span style="color: #007700">],<br />        ];<br />        </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= </span><span style="color: #0000BB">createGradientImage</span><span style="color: #007700">(</span><span style="color: #0000BB">600</span><span style="color: #007700">, </span><span style="color: #0000BB">600</span><span style="color: #007700">, </span><span style="color: #0000BB">$points</span><span style="color: #007700">, </span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">SPARSECOLORMETHOD_SPEPARDS</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br />        echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />    }<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>

    <div class="example" id="example-4">
    <p><strong>Exemplo #4 <span class="function"><strong>Imagick::sparseColorImage()</strong></span> com SPARSECOLORMETHOD_VORONOI</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: #007700">function </span><span style="color: #0000BB">renderImageVoronoi</span><span style="color: #007700">() {<br />        </span><span style="color: #0000BB">$points </span><span style="color: #007700">= [<br />            [</span><span style="color: #0000BB">0.30</span><span style="color: #007700">, </span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #DD0000">'red'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.10</span><span style="color: #007700">, </span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #DD0000">'blue'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.70</span><span style="color: #007700">, </span><span style="color: #0000BB">0.60</span><span style="color: #007700">, </span><span style="color: #DD0000">'lime'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">0.80</span><span style="color: #007700">, </span><span style="color: #0000BB">0.20</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow'</span><span style="color: #007700">],<br />        ];<br />        </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= </span><span style="color: #0000BB">createGradientImage</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">, </span><span style="color: #0000BB">$points</span><span style="color: #007700">, </span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">SPARSECOLORMETHOD_VORONOI</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br />        echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />    }<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>

    <div class="example" id="example-5">
    <p><strong>Exemplo #5 <span class="function"><strong>Imagick::sparseColorImage()</strong></span> com SPARSECOLORMETHOD_BARYCENTRIC</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: #007700">function </span><span style="color: #0000BB">renderImageBarycentric</span><span style="color: #007700">() {<br />        </span><span style="color: #0000BB">$points </span><span style="color: #007700">= [<br />            [</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'skyblue'</span><span style="color: #007700">],<br />            [-</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">'skyblue'</span><span style="color: #007700">],<br />            [</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">'black'</span><span style="color: #007700">],<br />        ];<br />        </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= </span><span style="color: #0000BB">createGradientImage</span><span style="color: #007700">(</span><span style="color: #0000BB">600</span><span style="color: #007700">, </span><span style="color: #0000BB">200</span><span style="color: #007700">, </span><span style="color: #0000BB">$points</span><span style="color: #007700">, </span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">SPARSECOLORMETHOD_BARYCENTRIC</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br />        echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />    }<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

   </div>

    <div class="example" id="example-6">
    <p><strong>Exemplo #6 <span class="function"><strong>Imagick::sparseColorImage()</strong></span> na função createGradientImage() usada por outros exemplos</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: #007700">function </span><span style="color: #0000BB">createGradientImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$width</span><span style="color: #007700">, </span><span style="color: #0000BB">$height</span><span style="color: #007700">, </span><span style="color: #0000BB">$colorPoints</span><span style="color: #007700">, </span><span style="color: #0000BB">$sparseMethod</span><span style="color: #007700">, </span><span style="color: #0000BB">$absolute </span><span style="color: #007700">= </span><span style="color: #0000BB">false</span><span style="color: #007700">) {<br /><br />    </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= new </span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">();<br />    </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">newImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$width</span><span style="color: #007700">, </span><span style="color: #0000BB">$height</span><span style="color: #007700">, </span><span style="color: #DD0000">"white"</span><span style="color: #007700">);<br />    </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">setImageFormat</span><span style="color: #007700">(</span><span style="color: #DD0000">"png"</span><span style="color: #007700">);<br /><br />    </span><span style="color: #0000BB">$barycentricPoints </span><span style="color: #007700">= array();<br /><br />    foreach (</span><span style="color: #0000BB">$colorPoints </span><span style="color: #007700">as </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">) {<br /><br />        if (</span><span style="color: #0000BB">$absolute </span><span style="color: #007700">== </span><span style="color: #0000BB">true</span><span style="color: #007700">) {<br />            </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">];<br />            </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">];<br />        }<br />        else {<br />            </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">] * </span><span style="color: #0000BB">$width</span><span style="color: #007700">;<br />            </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">] * </span><span style="color: #0000BB">$height</span><span style="color: #007700">;<br />        }<br /><br />        if (</span><span style="color: #0000BB">is_string</span><span style="color: #007700">(</span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">])) {<br />            </span><span style="color: #0000BB">$imagickPixel </span><span style="color: #007700">= new </span><span style="color: #0000BB">\ImagickPixel</span><span style="color: #007700">(</span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]);<br />        }<br />        else if (</span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">] instanceof </span><span style="color: #0000BB">\ImagickPixel</span><span style="color: #007700">) {<br />            </span><span style="color: #0000BB">$imagickPixel </span><span style="color: #007700">= </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">];<br />        }<br />        else{<br />            </span><span style="color: #0000BB">$errorMessage </span><span style="color: #007700">= </span><span style="color: #0000BB">sprintf</span><span style="color: #007700">(<br />                </span><span style="color: #DD0000">"O valor %s não é uma string e nem uma classe ImagickPixel. Não pode ser usado como uma cor."</span><span style="color: #007700">,<br />                </span><span style="color: #0000BB">$colorPoint</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]<br />            );<br /><br />            throw new </span><span style="color: #0000BB">\InvalidArgumentException</span><span style="color: #007700">(<br />                </span><span style="color: #0000BB">$errorMessage<br />            </span><span style="color: #007700">);<br />        }<br /><br />        </span><span style="color: #0000BB">$red </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagickPixel</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getColorValue</span><span style="color: #007700">(</span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COLOR_RED</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">$green </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagickPixel</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getColorValue</span><span style="color: #007700">(</span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COLOR_GREEN</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">$blue </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagickPixel</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getColorValue</span><span style="color: #007700">(</span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COLOR_BLUE</span><span style="color: #007700">);<br />        </span><span style="color: #0000BB">$alpha </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagickPixel</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getColorValue</span><span style="color: #007700">(</span><span style="color: #0000BB">\Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COLOR_ALPHA</span><span style="color: #007700">);<br /><br />        </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$red</span><span style="color: #007700">;<br />        </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$green</span><span style="color: #007700">;<br />        </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$blue</span><span style="color: #007700">;<br />        </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$alpha</span><span style="color: #007700">;<br />    }<br /><br />    </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">sparseColorImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$sparseMethod</span><span style="color: #007700">, </span><span style="color: #0000BB">$barycentricPoints</span><span style="color: #007700">);<br /><br />    return </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
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</div><?php manual_footer($setup); ?>