Why does FEM meshing doesn't generate volume elements in some cases

[vejmarie]

Hi Bernd,

Enjoy your week-end . Solofo is a friend, he is progressing on the build on linux. He has been able to launch FreeCAD and open the RuggedPOD model. Still face some linking issue on Fem and Mesh, but we might be able to fix all of that pretty soon. When you will restart compilation do not hesitate to pull the git repo (I have pushed 2 fix related to Solofo issues).

vejmarie

[bernd]

@solofo: great so see more people getting involved

udates on netgen5.3.1

I used:

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./configure  --with-tclconfig=/usr/lib/tcl8.5 --with-tkconfig=/usr/lib/tk8.5  --with-occ  --enable-shared  --enable-nglib  CXXFLAGS=-DNGLIB_EXPORTS  CXXFLAGS="-std=gnu++11"

I changed configurescript in the regard of occt directories and libsrc/include/incvis.hpp to get find header file glu.h:

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$ git diff master
diff --git a/netgen-5.3.1/configure b/netgen-5.3.1/configure
index fc3bd2c..40ae3f4 100755
--- a/netgen-5.3.1/configure
+++ b/netgen-5.3.1/configure
@@ -15352,9 +15352,9 @@ fi
 
 if test a$occon = atrue ; then
 
-       OCCFLAGS="-DOCCGEOMETRY -I$occdir/inc -I/usr/local/include/opencascade"
+       OCCFLAGS="-DOCCGEOMETRY -I/usr/local/include/opencascade"
 
-       OCCLIBS="-L$occdir/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin"
+       OCCLIBS="-L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin"
 
 
 #  -lTKDCAF
diff --git a/netgen-5.3.1/libsrc/include/incvis.hpp b/netgen-5.3.1/libsrc/include/incvis.hpp
index e705a30..b95005d 100644
--- a/netgen-5.3.1/libsrc/include/incvis.hpp
+++ b/netgen-5.3.1/libsrc/include/incvis.hpp
@@ -17,7 +17,7 @@
 #    include <OpenGL/glu.h>
 #  else
 #    include <GL/gl.h>
-#    include <glu.h>
+#    include <GL/glu.h>
 #  endif

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Making all in nglib
make[2]: Entering directory '/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/nglib'
/bin/bash ../libtool --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I..  -I../libsrc/include   -DOCCGEOMETRY -I/usr/local/include/opencascade -D_OCC64 -DHAVE_IOSTREAM -DHAVE_LIMITS -DHAVE_LIMITS_H -DHAVE_IOMANIP   -std=gnu++11 -fopenmp -MT nglib.lo -MD -MP -MF .deps/nglib.Tpo -c -o nglib.lo nglib.cpp
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -I../libsrc/include -DOCCGEOMETRY -I/usr/local/include/opencascade -D_OCC64 -DHAVE_IOSTREAM -DHAVE_LIMITS -DHAVE_LIMITS_H -DHAVE_IOMANIP -std=gnu++11 -fopenmp -MT nglib.lo -MD -MP -MF .deps/nglib.Tpo -c nglib.cpp  -fPIC -DPIC -o .libs/nglib.o
mv -f .deps/nglib.Tpo .deps/nglib.Plo
/bin/bash ../libtool --tag=CXX   --mode=link g++  -std=gnu++11 -fopenmp -avoid-version  -o libnglib.la -rpath /opt/netgen/lib nglib.lo ../libsrc/interface/libinterface.la ../libsrc/geom2d/libgeom2d.la ../libsrc/csg/libcsg.la ../libsrc/stlgeom/libstl.la ../libsrc/occ/libocc.la ../libsrc/meshing/libmesh.la -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin  
libtool: link: g++  -fPIC -DPIC -shared -nostdlib /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.9/crtbeginS.o  .libs/nglib.o   -Wl,-rpath -Wl,/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/libsrc/interface/.libs -Wl,-rpath -Wl,/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/libsrc/geom2d/.libs -Wl,-rpath -Wl,/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/libsrc/csg/.libs -Wl,-rpath -Wl,/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/libsrc/stlgeom/.libs -Wl,-rpath -Wl,/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/libsrc/occ/.libs -Wl,-rpath -Wl,/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/libsrc/meshing/.libs -Wl,-rpath -Wl,/opt/netgen/lib ../libsrc/interface/.libs/libinterface.so ../libsrc/geom2d/.libs/libgeom2d.so ../libsrc/csg/.libs/libcsg.so ../libsrc/stlgeom/.libs/libstl.so ../libsrc/occ/.libs/libocc.so ../libsrc/meshing/.libs/libmesh.so -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin -L/usr/lib/gcc/x86_64-linux-gnu/4.9 -L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../.. -lstdc++ -lm -lgomp -lpthread -lc -lgcc_s /usr/lib/gcc/x86_64-linux-gnu/4.9/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crtn.o  -fopenmp   -fopenmp -Wl,-soname -Wl,libnglib.so -o .libs/libnglib.so
libtool: link: ( cd ".libs" && rm -f "libnglib.la" && ln -s "../libnglib.la" "libnglib.la" )
g++ -DHAVE_CONFIG_H -I. -I..  -I../libsrc/include   -DOCCGEOMETRY -I/usr/local/include/opencascade -D_OCC64 -DHAVE_IOSTREAM -DHAVE_LIMITS -DHAVE_LIMITS_H -DHAVE_IOMANIP   -std=gnu++11 -fopenmp -MT ng_vol.o -MD -MP -MF .deps/ng_vol.Tpo -c -o ng_vol.o ng_vol.cpp
mv -f .deps/ng_vol.Tpo .deps/ng_vol.Po
/bin/bash ../libtool --tag=CXX   --mode=link g++  -std=gnu++11 -fopenmp   -o ng_vol ng_vol.o libnglib.la ../libsrc/interface/libinterface.la ../libsrc/geom2d/libgeom2d.la ../libsrc/csg/libcsg.la ../libsrc/stlgeom/libstl.la ../libsrc/occ/libocc.la ../libsrc/meshing/libmesh.la -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin  
libtool: link: g++ -std=gnu++11 -fopenmp -o .libs/ng_vol ng_vol.o  ./.libs/libnglib.so ../libsrc/interface/.libs/libinterface.so ../libsrc/geom2d/.libs/libgeom2d.so ../libsrc/csg/.libs/libcsg.so ../libsrc/stlgeom/.libs/libstl.so ../libsrc/occ/.libs/libocc.so ../libsrc/meshing/.libs/libmesh.so -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin -fopenmp -Wl,-rpath -Wl,/opt/netgen/lib
../libsrc/occ/.libs/libocc.so: undefined reference to `IGESCAFControl_Reader::IGESCAFControl_Reader()'
../libsrc/occ/.libs/libocc.so: undefined reference to `IGESCAFControl_Reader::SetColorMode(unsigned int)'
collect2: error: ld returned 1 exit status
Makefile:460: recipe for target 'ng_vol' failed
make[2]: *** [ng_vol] Error 1
make[2]: Leaving directory '/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/nglib'
Makefile:354: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1'
Makefile:285: recipe for target 'all' failed
make: *** [all] Error 2

[bernd]

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libtool: link: g++ -std=gnu++11 -fopenmp -o .libs/ng_vol ng_vol.o  ./.libs/libnglib.so ../libsrc/interface/.libs/libinterface.so ../libsrc/geom2d/.libs/libgeom2d.so ../libsrc/csg/.libs/libcsg.so ../libsrc/stlgeom/.libs/libstl.so ../libsrc/occ/.libs/libocc.so ../libsrc/meshing/.libs/libmesh.so -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin -fopenmp -Wl,-rpath -Wl,/opt/netgen/lib

I'm just trying to find where the /opt/netgen/ comes from. I've never ever used the /opt on my machine . I may should but I have not

EDIT:
commented in configure script:
#ac_default_prefix="/opt/netgen"

it's compiling ...

[bernd]

no still an undefined reference on netgen 5.3.1 ...

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libtool: link: ( cd ".libs" && rm -f "libnglib.la" && ln -s "../libnglib.la" "libnglib.la" )
g++ -DHAVE_CONFIG_H -I. -I..  -I../libsrc/include   -DOCCGEOMETRY -I/usr/local/include/opencascade -D_OCC64 -DHAVE_IOSTREAM -DHAVE_LIMITS -DHAVE_LIMITS_H -DHAVE_IOMANIP   -std=gnu++11 -fopenmp -MT ng_vol.o -MD -MP -MF .deps/ng_vol.Tpo -c -o ng_vol.o ng_vol.cpp
mv -f .deps/ng_vol.Tpo .deps/ng_vol.Po
/bin/bash ../libtool --tag=CXX   --mode=link g++  -std=gnu++11 -fopenmp   -o ng_vol ng_vol.o libnglib.la ../libsrc/interface/libinterface.la ../libsrc/geom2d/libgeom2d.la ../libsrc/csg/libcsg.la ../libsrc/stlgeom/libstl.la ../libsrc/occ/libocc.la ../libsrc/meshing/libmesh.la -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin  
libtool: link: g++ -std=gnu++11 -fopenmp -o .libs/ng_vol ng_vol.o  ./.libs/libnglib.so ../libsrc/interface/.libs/libinterface.so ../libsrc/geom2d/.libs/libgeom2d.so ../libsrc/csg/.libs/libcsg.so ../libsrc/stlgeom/.libs/libstl.so ../libsrc/occ/.libs/libocc.so ../libsrc/meshing/.libs/libmesh.so -L/usr/local/lib -lTKernel -lTKGeomBase -lTKMath -lTKG2d -lTKG3d -lTKXSBase -lTKOffset -lTKFillet -lTKShHealing -lTKMesh -lTKMeshVS -lTKTopAlgo -lTKGeomAlgo -lTKBool -lTKPrim -lTKBO -lTKIGES -lTKBRep -lTKSTEPBase -lTKSTEP -lTKSTL -lTKSTEPAttr -lTKSTEP209 -lTKXDESTEP -lTKXDEIGES -lTKXCAF -lTKLCAF -lFWOSPlugin -fopenmp
../libsrc/occ/.libs/libocc.so: undefined reference to `IGESCAFControl_Reader::IGESCAFControl_Reader()'
../libsrc/occ/.libs/libocc.so: undefined reference to `IGESCAFControl_Reader::SetColorMode(unsigned int)'
collect2: error: ld returned 1 exit status
Makefile:460: recipe for target 'ng_vol' failed
make[2]: *** [ng_vol] Error 1
make[2]: Leaving directory '/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1/nglib'
Makefile:354: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/hugo/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1'
Makefile:285: recipe for target 'all' failed
make: *** [all] Error 2
hugo@weide:~/Documents/dev/netgen/netgen-vejmarie/netgen-5.3.1$

[bernd]

I have pushed 2 fix related to Solofo issues

recompiled your updated FreeCAD occt7.0.0 without netgen. See the really small changes I had to make on cmakes
https://github.com/berndhahnebach/FreeC ... 700569149e

But still on changing to Part or Fem ...
first time:

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/home/hugo/Documents/dev/freecad/freecadbhb_vejmarie/build/Mod/Part/Part.so: undefined symbol: _ZNK18IGESControl_Writer5ModelEv

second time:

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segmentation fault

bernd

[vejmarie]

I am building a vagrant provisioning script out of debian/jessie64, so it might be helpfull to you guys Stay tune it shall be available during the night

[vejmarie]

Good news guys, I have been able to recompile the stuff under linux with everything which works. I will publish a vagrant file tonight as to help you, but the run has been made on a fresh Debian/Jessie64 running under VirtualBox ...

So you shall be able to make it work. I have published a few fix on my git, just re-pull it. Other things, I have installed all the libraries within there STANDARD destination directory (like /usr/local), and copied netgen source tree into /usr/share/netgen as the FindNETGEN.cmake is looking for that directory even if it is strange

Here a quick screenshot !

FreeCADLinux.png (514.31 KiB) Viewed 961 times

[bernd]

Good news guys, I have been able to recompile the stuff under linux with everything which works. I will publish a vagrant file tonight as to help you, but the run has been made on a fresh Debian/Jessie64 running under VirtualBox ...

Wow cool ! I'm really curious! I have spent quite some time on this now ...

[vejmarie]

@bernd, @solofo, here is the vagrant file which works

https://gist.github.com/vejmarie

You need to download the Vagrantfile and FreeCAD.sh which is the provisioning script. It does generate a working FreeCAD with OCCT 7 and new Salome version on Debian/Jessie64 vagrant box.

Enjoy, just let me know if you have any issues !

vejmarie

[solofo]

@vejmarie

It seems compilation with FreeCAD.sh worked thanks!
Used schroot/debootstrap instead of vagrant because the build machine is already a debian (stretch/sid), so this is more lightweight than vagrant/virtualbox, and probably easier for display export.