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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) INRIA
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
-->
<refentry version="5.0-subset Scilab" xml:id="eval3dp" xml:lang="en"
xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:ns3="http://www.w3.org/1999/xhtml"
xmlns:mml="http://www.w3.org/1998/Math/MathML"
xmlns:db="http://docbook.org/ns/docbook">
<info>
<pubdate>$LastChangedDate$</pubdate>
</info>
<refnamediv>
<refname>eval3dp</refname>
<refpurpose>computa facetas 3d de uma superfcie
parametrizada</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Seqncia de Chamamento</title>
<synopsis>[Xf,Yf,Zf]=eval3dp(fun,p1,p2)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Parmetros</title>
<variablelist>
<varlistentry>
<term>Xf,Yf,Zf</term>
<listitem>
<para>matrizes de tamanho (4,n-1*m-1). <literal>Xf(:,i)</literal>
,<literal>Yf(:,i)</literal> e <literal>Zf(:,i)</literal> so
respectivamente as coordenadas nos eixos x, y e z dos 4 pontos da
i-sima faceta de quatro lados. </para>
</listitem>
</varlistentry>
<varlistentry>
<term>fun</term>
<listitem>
<para>uma funo do Scilab. </para>
</listitem>
</varlistentry>
<varlistentry>
<term>p1</term>
<listitem>
<para>um vetor de tamanho <literal>n</literal>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>p2</term>
<listitem>
<para>um vetor de tamanho <literal>m</literal>.</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Descrio</title>
<para><literal>eval3dp</literal> computa uma representao de uma faceta
de quatro lados de uma superfcie 3d parametrizada definida pela funo
<literal>fun</literal>. <literal>fun(p1,p2)</literal> computa as
coordenadas nos eixos x, y e z dos pontos correspondentes da superfcie
como [x(i),y(i),z(i)]=fun(p1(i),p2(i)). Isto usado para
eficincia.</para>
</refsection>
<refsection>
<title>Exemplos</title>
<programlisting role="example"><![CDATA[
p1=linspace(0,2*%pi,10);
p2=linspace(0,2*%pi,10);
deff("[x,y,z]=scp(p1,p2)",["x=p1.*sin(p1).*cos(p2)";..
"y=p1.*cos(p1).*cos(p2)";..
"z=p1.*sin(p2)"])
[Xf,Yf,Zf]=eval3dp(scp,p1,p2);
plot3d(Xf,Yf,Zf)
]]></programlisting>
</refsection>
<refsection>
<title>Ver Tambm</title>
<simplelist type="inline">
<member><link linkend="genfac3d">genfac3d</link></member>
<member><link linkend="plot3d">plot3d</link></member>
</simplelist>
</refsection>
</refentry>
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