dolfin team mailing list archive

[Shawn Walker <walker@xxxxxxxxxxxxxxx>]

On Mon, 25 Aug 2008, Anders Logg wrote:

> > > The XML format could be something like
> > >
> > >  <mesh celltype="triangle" dim="2">
> > >    <vertices size="2868">
> > >      <vertex index="0" x="0.534923" y="0.326073"/>
> > >      ...
> > >    </vertices>
> > >    <cells size="5400">
> > >      <triangle index="0" v0="76" v1="914" v2="1153"/>
> > >      ...
> > >    </cells>
> > >    <coordinates>
> > >      <function>
> > >
> > >      </function>
> > >    </coordinates>
> > >  <mesh
>
> <coordinates degree="2">
>
> and then have the boolean affine="true"/"false" inside the cell tags.

ok, here is another example format:

<dolfin xmlns:dolfin="http://www.fenics.org/dolfin/";>
  <mesh celltype="triangle" dim="2">

    <vertices size="4">
      <vertex index="0" x="0.0"  y="0.0"/>
      <vertex index="1" x="1.0"  y="0.0"/>
      <vertex index="2" x="0.0"  y="1.0"/>
      <vertex index="3" x="-1.0" y="0.0"/>
    </vertices>

    <cells size="2">
      <triangle index="0" v0="0" v1="1" v2="2"/>
      <triangle index="1" v0="3" v1="0" v2="2"/>
    </cells>

    <coordinates degree="2">
      <function>
        <mesh celltype="triangle" dim="2">
          <vertices size="4">
            <vertex index="0" x="0.0"  y="0.0"/>
            <vertex index="1" x="1.0"  y="0.0"/>
            <vertex index="2" x="0.0"  y="1.0"/>
            <vertex index="3" x="-1.0" y="0.0"/>
          </vertices>
          <cells size="2">
            <triangle index="0" affine="false" v0="0" v1="1" v2="2"/>
            <triangle index="1" affine="true"  v0="3" v1="0" v2="2"/>
          </cells>
        </mesh>

        <vector size="18">
          <entry row="0" value="0.0"/> # 0th pair
          <entry row="1" value="0.0"/> # of coordinates
          <entry row="2" value="1.0"/> # 1st pair
          <entry row="3" value="0.0"/> # of coordinates
          <entry row="4" value="0.0"/>
          <entry row="5" value="1.0"/>
          <entry row="6" value="-1.0"/>
          <entry row="7" value="0.0"/>

          <entry row="8" value="0.5"/>
          <entry row="9" value="0.05"/>
          <entry row="10" value="0.6"/>
          <entry row="11" value="0.6"/>
          <entry row="12" value="0.0"/>
          <entry row="13" value="0.5"/>
          <entry row="14" value="-0.5"/>
          <entry row="15" value="0.0"/>
          <entry row="16" value="-0.5"/>
          <entry row="17" value="0.5"/>
        </vector>
      </function>
      <dofmap ?????/>
    </coordinates>

  </mesh>
</dolfin>

Does this sort of look correct?

- Shawn