mirror of
https://github.com/sigmasternchen/php-doc-en
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700aa8159f
closes that bug. Also, imagecreatetruecolor is preferred over imagecreate(). git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@112632 c90b9560-bf6c-de11-be94-00142212c4b1
75 lines
3.1 KiB
XML
75 lines
3.1 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<!-- splitted from ./en/functions/image.xml, last change in rev 1.36 -->
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<refentry id="function.imagecopyresized">
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<refnamediv>
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<refname>imagecopyresized</refname>
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<refpurpose>Copy and resize part of an image</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>int</type><methodname>imagecopyresized</methodname>
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<methodparam><type>resource</type><parameter>dst_im</parameter></methodparam>
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<methodparam><type>resource</type><parameter>src_im</parameter></methodparam>
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<methodparam><type>int</type><parameter>dstX</parameter></methodparam>
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<methodparam><type>int</type><parameter>dstY</parameter></methodparam>
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<methodparam><type>int</type><parameter>srcX</parameter></methodparam>
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<methodparam><type>int</type><parameter>srcY</parameter></methodparam>
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<methodparam><type>int</type><parameter>dstW</parameter></methodparam>
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<methodparam><type>int</type><parameter>dstH</parameter></methodparam>
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<methodparam><type>int</type><parameter>srcW</parameter></methodparam>
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<methodparam><type>int</type><parameter>srcH</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>imagecopyresized</function> copies a rectangular
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portion of one image to another image.
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<parameter>Dst_im</parameter> is the destination image,
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<parameter>src_im</parameter> is the source image identifier. If
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the source and destination coordinates and width and heights
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differ, appropriate stretching or shrinking of the image fragment
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will be performed. The coordinates refer to the upper left
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corner. This function can be used to copy regions within the
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same image (if <parameter>dst_im</parameter> is the same as
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<parameter>src_im</parameter>) but if the regions overlap the
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results will be unpredictable.
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</para>
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<note>
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<para>
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There is a problem due to palette image limitations (255+1 colors).
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Resampling or filtering an image commonly needs more colors than 255, a
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kind of approximation is used to calculate the new resampled pixel and its
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color. With a palette image we try to allocate a new color, if that
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failed, we choose the closest (in theory) computed color. This is
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not always the closest visual color. That may produce a weird result, like
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blank (or visually blank) images. To skip this problem, please use a
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truecolor image as a destination image, such as one created by
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<function>imagecreatetruecolor</function>.
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</para>
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</note>
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<para>
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See also <function>imagecopyresampled</function>.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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