segmattest.html

有限元学习研究用源代码(老外的),供科研人员参考

<title>segment - test example</title>

<h1>Test Example for Segment Description</h1>

 <P>The output functions do not use (per default) the region number,
but the material number.

 <P>Per default, the material <B>wzRegion::material()</B> is the same
as the region.  But it can be modified.  This allows to manipulate the
output.

 <P>At first, we copy <A HREF="segtest.html"> default test code</A>:

<PRE>
#include "<A HREF="wzsegment.hxx">wzsegment.hxx</A>"

class test_segment_description: public wzSegmentDescription
{
public:
	test_segment_description();
};

test_segment_description::test_segment_description()
:wzSegmentDescription()
{
  int i; wzRegion r; wzFace f; wzEdge e; wzVertex v;
  r = wzRegion("default region");
  f = wzFace("default face");
  e = wzEdge("default edge");
  v = wzVertex("default vertex");
  for(i=2;i<64;i++){
	r = wzRegion("unknown region");
	f = wzFace("unknown face");
  }
  wzRegion( 1).color()="#099011311";
  wzRegion( 2).color()="#201000";
  wzRegion( 3).color()="#000300611";
  wzRegion( 4).color()="#111111111";
  wzRegion( 5).color()="#b11a00155";
  wzRegion( 6).color()="#311200211";
  wzRegion( 7).color()="#000d11100";
  wzRegion( 8).color()="#100300111";
  wzRegion( 9).color()="#300300300";
  wzRegion(10).color()="#100011211";
  wzRegion(11).color()="#400711911";
  wzFace  ( 1).color()="#099011311";
  wzFace  ( 2).color()="#201000";
  wzFace  ( 3).color()="#000300611";
  wzEdge  ( 1).color()="#099011311";
  wzVertex( 1).color()="#099011311";
</PRE>

 <P>Now, let's modify some materials:

<PRE>
  wzRegion(1).material().invalidate();
  wzRegion(3).material() = wzRegion(2);
}
</PRE>

 <P>The default region is invalid (0), thus, now the first region will
not be shown or written out. As region 2, as region 3 will be written
out with number 2.