ps_shading.sgml

PSlib是一个用来生成PostScript文件的类库。提供了一个生成PostScript文件的简单方法。

<!doctype refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [

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  <!-- Fill in your name for FIRSTNAME and SURNAME. -->
  <!ENTITY dhfirstname "<firstname>UWE</firstname>">
  <!ENTITY dhsurname   "<surname>STEINMANN</surname>">
  <!-- Please adjust the date whenever revising the manpage. -->
  <!ENTITY dhdate      "<date>July 14, 2004</date>">
  <!-- SECTION should be 1-8, maybe w/ subsection other parameters are
       allowed: see man(7), man(1). -->
  <!ENTITY dhsection   "<manvolnum>3</manvolnum>">
  <!ENTITY dhemail     "<email>[e-mail]</email>">
  <!ENTITY dhusername  "Uwe Steinmann">
  <!ENTITY dhucpackage "<refentrytitle>PS_SHADING</refentrytitle>">
  <!ENTITY funcname    "PS_shading">

  <!ENTITY debian      "<productname>Debian</productname>">
  <!ENTITY gnu         "<acronym>GNU</acronym>">
  <!ENTITY gpl         "&gnu; <acronym>GPL</acronym>">
]>

<refentry>
  <refentryinfo>
    <address>
      &dhemail;
    </address>
    <author>
      &dhfirstname;
      &dhsurname;
    </author>
    <copyright>
      <year>2004</year>
      <holder>&dhusername;</holder>
    </copyright>
    &dhdate;
  </refentryinfo>
  <refmeta>
    &dhucpackage;

    &dhsection;
  </refmeta>
  <refnamediv>
    <refname>&funcname;</refname>

    <refpurpose>Create shading</refpurpose>
  </refnamediv>
  <refsynopsisdiv>
    <para>#include &lt;pslib.h&gt;</para>
		<para>int &funcname;(PSDoc *psdoc, const char *shtype, float x0, float y0, float x1, float y1, float c1, float c2, float c3, float c4, const char *optlist)</para>
  </refsynopsisdiv>
  <refsect1>
    <title>DESCRIPTION</title>

    <para>This function creates a shading which can be used by
		 <function>PS_shfill(3)</function> or
		 <function>PS_shading_pattern(3)</function>. The type of shading
		 can be either `radial' or `axial'. Each shading starts with
		 the current fill color and ends with the given color values
		 passed in the parameters <parameter>c1</parameter> to
		 <parameter>c4</parameter> (see <function>PS_setcolor(3)</function>
		 for their meaning). The coordinates <parameter>x0</parameter>,
		 <parameter>y0</parameter>, <parameter>x1</parameter>,
		 <parameter>y1</parameter> are the start and end point of the shading.
		 If the shading is of type `radial' the option list must also contain
		 the parameters r0 and r1 with the radius of the start and end
		 circle.</para>
		<para>The color of the shading can be in any color space except for
		 	`pattern'.</para>

  </refsect1>
  <refsect1>
    <title>RETURN VALUE</title>
    <para>Returns the identifier of the shading or zero in case of an error.
		      The identifier is a positiv number.</para>
  </refsect1>
  <refsect1>
    <title>SEE ALSO</title>

    <para>PS_shfill(3), PS_shading_pattern(3)</para>

  </refsect1>
  <refsect1>
    <title>AUTHOR</title>

    <para>This manual page was written by &dhusername; &dhemail;.</para>

  </refsect1>
</refentry>

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sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:2
sgml-indent-data:t
sgml-parent-document:nil
sgml-default-dtd-file:nil
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
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