📄 node9.html

📁 htmdoc for html coding
💻 HTML
字号:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2 Final//FR"><!-- Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) --><!-- by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><!-- Modified Simulog 03/97 --><HTML><HEAD><TITLE>1.3.2 Introduction of a curve</TITLE><LINK REL=STYLESHEET TYPE="text/css"	HREF="./Modulef.css" TITLE="Modulef CSS"><meta name="description" value="1.3.2 Introduction of a curve"><meta name="keywords" value="Guide3"><meta name="resource-type" value="document"><meta name="distribution" value="global"></HEAD><BODY BGCOLOR="#FFFFFF"><P> <IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM	ALT="Modulef"><A NAME=tex2html953 HREF="node8.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif"	ALT="previous"></A><A NAME=tex2html959 HREF="node7.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif"	ALT="up"></A><A NAME=tex2html961 HREF="node10.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif"	ALT="next"></A><A NAME=tex2html963 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif"	ALT="contents"></A><A NAME=tex2html964 HREF="node28.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/index_motif.gif"	ALT="index"></A><A HREF="../Guide3-18/node9.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM	ALT="[BIG]"></A><A HREF="../Guide3-14/node9.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM	ALT="[Normal]"></A><A HREF="../Guide3-10/node9.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM	ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html962 HREF="node10.html">1.3.3 Modification of the numbers</A><B>Up: </B> <A NAME=tex2html960 HREF="node7.html">1.3 Main ideas</A><B> Prev: </B> <A NAME=tex2html954 HREF="node8.html">1.3.1 The  NOPO data structure</A><B><A HREF="node28.html"	>Index</A></B><B><A HREF="node2.html"	>Contents</A></B><HR SIZE=3 WIDTH="75&#37;"><H2><A NAME=SECTION00332000000000000000>1.3.2 Introduction of a curve</A></H2><P><P><P>There are two options to describe a curve  which the mesh approximates:<P><UL><LI> program a FORTRAN  function, called <b> FFRONT</b><A NAME=480>&#160;</A> of the following form:<P><DIV ALIGN=center>FUNCTION FFRONT(I,X,Y) </DIV><P>where<DL COMPACT><DT>I<DD> is the reference number of the line (portion of the contour) described, and<DT>X,Y<DD> are the space variables.<P> </DL><P>A typical example of function <b> FFRONT</b> is given below:<P><PRE>      FUNCTION FFRONT(I,X,Y)      IF ( I .EQ. 1) THEN           FFRONT = function(X,Y)       ELSE IF ( I .EQ. nnn )          FFRONT = ...       ELSE IF ...          ...      END IF       END</PRE><P><LI> make use of the function parser<A NAME=486>&#160;</A>:<P>A typical example of a function parser, for example the description of the line with reference 1 by a function,is the following:<P><DIV ALIGN=center>COURBE01(X,Y) = X*X + (Y-1)*(Y-1) - .125 <BR> </DIV></UL><P>The first case corresponds to writing a FORTRAN function and linking it at execution. In the second case, the curves are given in a data file, thus avoiding performing a link.<P><P><P><HR SIZE=3 WIDTH="75&#37;"><IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM	ALT="Modulef"><A NAME=tex2html953 HREF="node8.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif"	ALT="previous"></A><A NAME=tex2html959 HREF="node7.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif"	ALT="up"></A><A NAME=tex2html961 HREF="node10.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif"	ALT="next"></A><A NAME=tex2html963 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif"	ALT="contents"></A><A NAME=tex2html964 HREF="node28.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/index_motif.gif"	ALT="index"></A><A HREF="../Guide3-18/node9.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM	ALT="[BIG]"></A><A HREF="../Guide3-14/node9.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM	ALT="[Normal]"></A><A HREF="../Guide3-10/node9.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM	ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html962 HREF="node10.html">1.3.3 Modification of the numbers</A><B>Up: </B> <A NAME=tex2html960 HREF="node7.html">1.3 Main ideas</A><B> Prev: </B> <A NAME=tex2html954 HREF="node8.html">1.3.1 The  NOPO data structure</A><B><A HREF="node28.html"	>Index</A></B><B><A HREF="node2.html"	>Contents</A></B><BR> <HR><P><ADDRESS></ADDRESS></BODY></HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -