cogtest.html

Delaunay三角形的网格剖分程序

<TITLE>COG 2.1: Test cogeometry</TITLE>

 <P>This file defines a default test cogeometry. Test cogeometries are
used in some general test code which allows to compute for the test
cogeometry the following things:

 <UL>
 <LI> intersection with the
 <A HREF="maincogtest.html">cube [-1,1]<SUP>3</SUP></A>,
 <LI> intersection with the
 <A HREF="maincog3dtest.html">cube [0,1]<SUP>3</SUP></A>,
 <LI> intersection with the
 <A HREF="maincog2dtest.html">rectangle [-1,1]<SUP>2</SUP></A> at z=0.4,
 <LI> intersection with the
 <A HREF="maincog1dtest.html">segment [-1,1]</A> at y=z=0.4,
 <LI> intersection with a
 <A HREF="maincogpolartest.html">unit disc</A> at z=0.2,
 </UL>

 <P>The test code below will be extracted by the following command:

 <P>&gt; coguse cog

 <P>It will be replaced by the test code from the files
<B>cog<I>opt</I>test.html</B> by the following command:

 <P>&gt; coguse cog <B>opt</B>

 <P>The available options will be listed by the following command:

 <P>&gt; coguse cog


 <hr>

<H2>Temporarily not available</H2>

 <P>At the current moment, because of some redesign of the related
functionality, I have removed the other test files. 

<!-->
 <B>opt</B> denotes one of the following options:

 <UL>
 <LI> without option, this default will be recovered. Moreover, you
see the actual list of options. Mail me if the list below is invalid;
 <LI> <A HREF="cogregiontest.html">region</A> by user-defined
function which defines the region containing a given point;
 <LI> <A HREF="cogfacetest.html">face</A> subdivides boundary faces;
 <LI> <A HREF="cognonetest.html">none</A> for the trivial cogeometry;
 <LI> <A HREF="cog1dtest.html">1d</A> planes in x-direction;
 <LI> <A HREF="cogfunctiontest.html">function</A> by user-defined real function;
 <LI> <A HREF="cogmaptest.html">map</A> modification by a user-defined
transformation;
 <LI> <A HREF="cogellipsetest.html">ellipse</A>;
 <LI> <A HREF="cogtorustest.html">torus</A>;
 <LI> <A HREF="cogplanetest.html">plane</A> in skew directions;
 <LI> <A HREF="cogelevationtest.html">elevation</A> by some elevation table;
 <LI> <A HREF="cogboxtest.html">box</A> 1D continuation outside the box;
 <LI> <A HREF="cogperiodictest.html">periodic</A> periodic continuation;
 <LI> <A HREF="cogintersectiontest.html">intersection</A> - minimum of
region numbers;
 <LI> <A HREF="coguniontest.html">union</A> - maximum of region numbers;
 <LI> <A HREF="cogsplittest.html">split</A> of one region into parts
described by another cogeometry;
 <LI> <A HREF="cogoverlaytest.html">overlay</A> of one region over the
background of another cogeometry;
 <LI> <A HREF="cogcornertest.html">corner</A>;
 </UL>

>

 <P>You can also test your own cogeometries. To add an option xxx
you simply have to write the file "cogxxxtest.html" following the
conventions of the other files "cog*test.html".  That's easy if you
start with one of these files as a pattern.

 <P>We use a <A HREF="cogellipsetest.html">simple sphere</A> as the
default cogeometry.

<PRE>
#include "coglib.hxx"
cogeometry test_cogeometry()
{
	return new Cogeometry0D(wzRegion(1));
}
</PRE>