php-doc-en/reference/swf/functions/swf-lookat.xml

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<refentry xml:id="function.swf-lookat" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>swf_lookat</refname>
  <refpurpose>Define a viewing transformation</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>void</type><methodname>swf_lookat</methodname>
   <methodparam><type>float</type><parameter>view_x</parameter></methodparam>
   <methodparam><type>float</type><parameter>view_y</parameter></methodparam>
   <methodparam><type>float</type><parameter>view_z</parameter></methodparam>
   <methodparam><type>float</type><parameter>reference_x</parameter></methodparam>
   <methodparam><type>float</type><parameter>reference_y</parameter></methodparam>
   <methodparam><type>float</type><parameter>reference_z</parameter></methodparam>
   <methodparam><type>float</type><parameter>twist</parameter></methodparam>
  </methodsynopsis>
  <para>
   Defines a viewing transformation by giving the viewing position and the
   coordinates of a reference point in the scene.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>view_x</parameter></term>
     <listitem>
      <para>
       x-coordinate for the viewing position
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>view_y</parameter></term>
     <listitem>
      <para>
       y-coordinate for the viewing position
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>view_z</parameter></term>
     <listitem>
      <para>
       z-coordinate for the viewing position
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>reference_x</parameter></term>
     <listitem>
      <para>
       x-coordinate for the reference point
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>reference_y</parameter></term>
     <listitem>
      <para>
       y-coordinate for the reference point
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>reference_z</parameter></term>
     <listitem>
      <para>
       z-coordinate for the reference point
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>twist</parameter></term>
     <listitem>
      <para>
       Controls the rotation along with viewer's z axis.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.void;
  </para>
 </refsect1>
</refentry>

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