experimental houdini export code

[Imre Tuske]

Hi,

I've put together a Houdini ROP that can export transform hierarchies
and polymeshes into alembic format. I uploaded it to github:

https://github.com/johnnyquest/hAbcGeomExport

Nothing fancy, but it does the job more or less. I hope it will be
useful.

imre

ps.: I'm still desperate and in poor condition because of the state of
things when it comes to building it on windows, so _please_ feel free
to share the wisdom if you manage to compile it there (some project
files would be even better :)).

[Andrew Lyons]

Cool! Thanks!

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[schwendigodangerweenie]

Hi Imre,




I just tried installing this under OSX Lion and Houdini 11.




I built Alembic from source, then edited your makefile as per the
instructions in the INSTALL.txt file you included.




I ran "make" from the Houdini shell terminal, and got this error part
way through:




"/Library/Frameworks/Houdini.framework/Versions/11.1.72/Resources/
toolkit/include/SYS/SYS_Align.h: In function ‘void* SYSamalloc(size_t,
size_t)’:
/Library/Frameworks/Houdini.framework/Versions/11.1.72/Resources/
toolkit/include/SYS/SYS_Align.h:84: error: ‘memalign’ was not declared
in this scope
make: *** [src/GeoObject.o] Error 1
mofomacpro:johnnyquest-hAbcGeomExport-9fa6a8d $"




Any advice?




Thanks!




Matt

[Jon Macey]

I had the same issue and modified the SYS_Align.h code as follows

inline void *SYSamalloc(size_t b, size_t a)
{ return malloc(b); }//memalign(a, b); }

This matches the mac OSX version which is a few lines below in the
code, however when I tried to get it working using the correct -D
MBSD for mac version got loads of other errors so it is a hack!

After this I got the following errors

ld: duplicate symbol bool GVEXimportData<UT_Matrix4T<float>
>(GB_GenericData const&, UT_Matrix4T<float>&)in src/hAbcGeomExport.o
and src/GeoObject.o for architecture x86_64

Which I can't track down as it seems to be some issues with the
templates somewhere, however if I nm the .o file there seems to be no
duplicates, not had another look for a while, did have it working
under linux but it is quite unstable.

hope this helps a bit

Jon

[schwendigo]

Hi Jon,

Thanks for the reply.

I will try that mod to Sys_Align.h - it's weird though, because it
seems to have a provision for OSX (elif = MBSD), right?

Not sure what the error on line 84 is popping up, b/c that's in the
LINUX elif block.

In any case, I read somewhere that the duplicates sometimes have to do
with getting rid of make temp and cache files ...

I'm new to programming and compiling, so I don't know if that makes
any sense, but I thought it couldn't hurt to pass along.

Please do let me know if you get this working on OS X, and I'll do the
same.

Best,

Matt

[Matthew Foglia]

Hi Jon,

I tried your advice, and I am getting a different error - maybe you could take a look?

Here's the output:

g++� -shared src/GeoObject.o src/hAbcGeomExport.o src/abcexportctrl.o -L/usr/X11R6/lib -L/Users/mofo/ALEMBIC_BUILD/lib/Alembic� -lHalf -lIex -lhdf5 -lhdf5_hl -lAlembicAbcCoreHDF5 -lAlembicAbcCoreAbstract -lAlembicAbc -lAlembicAbcGeom -lAbcWFObjConvert -lAlembicUtil -lGLU -lGL -lX11 -lXext -lXi -ldl -lpthread -o/dso/hAbcExport.so
ld: unknown option: -o/dso/hAbcExport.so
collect2: ld returned 1 exit status
make: *** [/dso/hAbcExport.so] Error 1

On 1/24/12 6:59 PM, schwendigo wrote:

Hi Jon,

Thanks for the reply.

I will try that mod to Sys_Align.h - it's weird though, because it
seems to have a provision for OSX (elif = MBSD), right?

Not sure what the error on line 84 is popping up, b/c that's in the
LINUX elif block.

In any case, I read somewhere that the duplicates sometimes have to do
with getting rid of make temp and cache files ...

I'm new to programming and compiling, so I don't know if that makes
any sense, but I thought it couldn't hurt to pass along.

Please do let me know if you get this working on OS X, and I'll do the
same.

Best,

Matt

On Jan 23, 3:39�pm, Jon Macey <jma...@bournemouth.ac.uk> wrote:

I had the same issue and modified the SYS_Align.h code as follows

� � inline void *SYSamalloc(size_t b, size_t a)
� � � � � � � � � � { return malloc(b); }//memalign(a, b); }

This matches the mac OSX version which is a few lines below in the
code, however when I tried to get it working using the correct �-D
MBSD for mac version got loads of other errors so it is a hack!

After this I got the following errors

ld: duplicate symbol bool GVEXimportData<UT_Matrix4T<float>>(GB_GenericData const&, UT_Matrix4T<float>&)in src/hAbcGeomExport.o

and src/GeoObject.o for architecture x86_64

Which I can't track down as it seems to be some issues with the
templates �somewhere, however if I nm the .o file there seems to be no
duplicates, not had another look for a while, did have it working
under linux but it is quite unstable.

hope this helps a bit

Jon

On Jan 23, 4:08�pm, schwendigodangerweenie <m.fog...@gmail.com> wrote:

Hi Imre,

I just tried installing this under OSX Lion and Houdini 11.

I built Alembic from source, then edited your makefile as per the
instructions in the INSTALL.txt file you included.

I ran "make" from the Houdini shell terminal, and got this error part
way through:

"/Library/Frameworks/Houdini.framework/Versions/11.1.72/Resources/
toolkit/include/SYS/SYS_Align.h: In function �void* SYSamalloc(size_t,
size_t)�:
/Library/Frameworks/Houdini.framework/Versions/11.1.72/Resources/
toolkit/include/SYS/SYS_Align.h:84: error: �memalign� was not declared
in this scope
make: *** [src/GeoObject.o] Error 1
mofomacpro:johnnyquest-hAbcGeomExport-9fa6a8d $"

Any advice?

Thanks!

Matt

[Nicholas Yue]

On 28/01/12 5:25 AM, Matthew Foglia wrote:

Hi Jon,

I tried your advice, and I am getting a different error - maybe you could take a look?

Here's the output:

g++� -shared src/GeoObject.o src/hAbcGeomExport.o src/abcexportctrl.o -L/usr/X11R6/lib -L/Users/mofo/ALEMBIC_BUILD/lib/Alembic� -lHalf -lIex -lhdf5 -lhdf5_hl -lAlembicAbcCoreHDF5 -lAlembicAbcCoreAbstract -lAlembicAbc -lAlembicAbcGeom -lAbcWFObjConvert -lAlembicUtil -lGLU -lGL -lX11 -lXext -lXi -ldl -lpthread -o/dso/hAbcExport.so
ld: unknown option: -o/dso/hAbcExport.so
collect2: ld returned 1 exit status
make: *** [/dso/hAbcExport.so] Error 1

Hi Jon,

��� The above looks likes a missing space character i.e. it should probably be "-o /dso/hAbcExport.so"

Regards

-- 
Nicholas Yue
Graphics - RenderMan, Houdini, Visualization, OpenGL, HDF5
Custom Dev - C++ porting, OSX, Linux, Windows
http://au.linkedin.com/in/nicholasyue