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<TITLE>DMPlexComputeCellGeometryFEM</TITLE>
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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="DMPlexComputeCellGeometryFEM"><H1>DMPlexComputeCellGeometryFEM</H1></A>
Compute the Jacobian, inverse Jacobian, and Jacobian determinant at each quadrature point in the given cell
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdmplex.h"
#include "petscfe.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DMPLEX/DMPlexComputeCellGeometryFEM.html#DMPlexComputeCellGeometryFEM">DMPlexComputeCellGeometryFEM</A>(<A HREF="../DM/DM.html#DM">DM</A> dm, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> cell, <A HREF="../DM/PetscQuadrature.html#PetscQuadrature">PetscQuadrature</A> quad, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *v, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *J, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *invJ, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *detJ)
</PRE>
Collective on <A HREF="../DM/DM.html#DM">DM</A>
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dm </B></TD><TD>- the <A HREF="../DM/DM.html#DM">DM</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>cell </B></TD><TD>- the cell
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>quad </B></TD><TD>- the quadrature containing the points in the reference element where the geometry will be evaluated. If quad == NULL, geometry will be
evaluated at the first vertex of the reference element
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>v </B></TD><TD>- the image of the transformed quadrature points, otherwise the image of the first vertex in the closure of the reference element
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>J </B></TD><TD>- the Jacobian of the transform from the reference element at each quadrature point
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>invJ </B></TD><TD>- the inverse of the Jacobian at each quadrature point
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>detJ </B></TD><TD>- the Jacobian determinant at each quadrature point
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Fortran Notes</FONT></H3>
Since it returns arrays, this routine is only available in Fortran 90, and you must
include petsc.h90 in your code.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMGetCoordinateSection.html#DMGetCoordinateSection">DMGetCoordinateSection</A>(), <A HREF="../DM/DMGetCoordinates.html#DMGetCoordinates">DMGetCoordinates</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/impls/plex/plexgeometry.c.html#DMPlexComputeCellGeometryFEM">src/dm/impls/plex/plexgeometry.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/dm/impls/plex/examples/tutorials/ex2.c.html">src/dm/impls/plex/examples/tutorials/ex2.c.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/dm/impls/plex/plexgeometry.c.html#DMPlexComputeCellGeometryFEM_Implicit">DMPlexComputeCellGeometryFEM_Implicit in src/dm/impls/plex/plexgeometry.c</A><BR>
<A HREF="../../../src/dm/impls/plex/plexgeometry.c.html#DMPlexComputeCellGeometryFEM_FE">DMPlexComputeCellGeometryFEM_FE in src/dm/impls/plex/plexgeometry.c</A><BR>
<BR><A HREF="./index.html">Index of all DMPLEX routines</A>
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