[Hugo]

Read our latest news about it!

SOFA being integrated
in unity 3d

[Hugo]

I therefore set this topic as solved.
Do not hesitate to post further question later on, mbarrow.

Cheers,

Hugo

[Hugo]

Ok, cool!! I note this topic as solved.
Keep us updated about your progress!

Cheers

Hugo

[Hugo]

Hi Sen,

At my best knowledge there is no direct way (like a script) generating C++ code from XML file. You can browse the existing topics on how to write a cpp scene on the forum, or read the documentation.

Cheers,

Hugo

[Hugo]

Hey Lujain,

Could you share with us a preview of your volumetric mesh ? a clipping would help to see in the volume of your object.

Hugo

[Hugo]

Hi Binesh,

Did you have a look at TetrahedralFEMForceField? I think this version of the tetra-FEM supports topological changes. Let me know if this helps,

Hugo

[Hugo]

Hi Lujain,

If I understand well your process, you are generating a surface mesh from segment ted data. It means your mesh only includes points, edges et and triangles (surface). Right ?

To achieve a simulation like liver.scn or TutorialForceFieldLiverFEM.scn, you need a volumetric mesh, i.e. mesh made up of volumetric elements like tetra or hexahedra. The question coming nest is : how to generate one volumetric mesh from a surface mesh ?

This has already been discussed here : https://www.sofa-framework.org/community/forum/topic/obj-files-msh-files/

Best,

Hugo

[Hugo]

Ahah no yet!
Today is a holiday in Europe : Easter Monday! You should soon get a reply. For quicker tailored support, you can subscribe to a charged support from the SOFA consortium.

Cheers,

Hugo

[Hugo]

Hi sayakbiswas,

Welcome into the SOFA community!!
Indeed, if I’m remembering well, the “tags” attribute supports multiple values, you can write both separated from a space:

<Node name="triangle-surface">
...
<TriangleModel bothSide="0" contactFriction="500.0" contactStiffness="500.0" group="1" moving="1" selfCollision="0" simulated="1" tags="HapticSurfaceVein SecondTag" />
</Node>

Let us know how it works.
Cheers,

Hugo

[Hugo]

Hi Mahdi,

Welcome into the SOFA community!
This is a very interesting simulation topic. Unfortunately, I am no expert in advanced graphics and visualisation in SOFA. I should find someone in the community able to help you. Cheers,

Hugo

[Hugo]

welcome to the SOFA community by the way!

[Hugo]

Hi Boland,

Did you configure twice?
Could you provide us the complete output of the CMake error please?

[Hugo]

Cool Binesh!
Nice to hear! Let us know when you’ll upgrade so that we can help.
Cheers

Hugo

[Hugo]

Maybe try to set the path to the SofaBaseTopology lib.
But as I mentioned, with an old version of SOFA, it’s pretty hard to bring remote support.

[Hugo]

Yeah, your plugin needs to have a clear dependency to the module in SOFA where the TopologySubsetDataImpl is implemented. Without it, it gives a symbol error as you have.

To solve it, you must look for the cmake project that includes the class TopologySubsetDataImpl, and add it in AddLinkerDependencies() in the CMakeLists of your plugin.

Sorry about these issues. Upgrade looks like a proper solution.

[Hugo]

Hi mbarrrow,

No worries. The TLED would not be my start in SOFA. You could rather have a look into the plugin SofaCUDA. There, you will find the FEM codes in their GPU version. Best,

Hugo

[Hugo]

Ouch, an old version of SOFA will make the debugging pretty complicated :s

Have you try this:

include(${SOFA_CMAKE_DIR}/preProject.cmake)

set(HEADER_FILES

        FreezeSpring.h
        initFreezeSpring.h
        FreezeSpring.inl
       
	)

set(SOURCE_FILES

        FreezeSpring.cpp
    initFreezeSpring.cpp

	)

set(README_FILES

        FreezeSpring.txt
	)

add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${MOC_FILES} ${SOURCE_FILES} ${README_FILES})

AddCompilerDefinitions("SOFA_BUILD_FREEZESPRING")
AddLinkerDependencies(SofaComponentMain)
AddLinkerDependencies(SofaBaseTopology)

include(${SOFA_CMAKE_DIR}/postProject.cmake)

But the only advice I could give is to update your SOFA version to a stable release (v16.12). I can guess that it might take you some time and effort, but I want you to know that we stay at your disposal to help in this stage of your work.
Let us know about your next move.

Hugo

[Hugo]

Hi Binesh,

Which version of SOFA are you using btw ?
With the current structure of SOFA, the CMakeList.txt of your plugin FreezeSpring should look pretty close to:

cmake_minimum_required(VERSION 3.1)
project(FreezeSpring)

set(HEADER_FILES
    FreezeSpring.h
    initFreezeSpring.h
    FreezeSpring.inl
)

set(SOURCE_FILES
    FreezeSpring.cpp
    initFreezeSpring.cpp
)

find_package(SofaBase REQUIRED)

add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${SOURCE_FILES} )
set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-DSOFA_BUILD_FREEZESPRING")
target_link_libraries(${PROJECT_NAME} SofaBaseTopology)
include_directories("${CMAKE_CURRENT_SOURCE_DIR}/..")

install(TARGETS ${PROJECT_NAME}
        COMPONENT FreezeSpring_libraries
        EXPORT FreezeSpringTargets
        RUNTIME DESTINATION bin
        LIBRARY DESTINATION lib
        ARCHIVE DESTINATION lib)

Agreed Erik?
Hope this helps,

Hugo

[Hugo]

Hi mbarrow,

In SOFA, the TLED approach was developed during a PhD thesis that ended in 2009. Since then, the other GPU-based simulation were implemented using the SofaCUDA plugin. These implementations do not only rely on explicit schemes. Most of them were done using implicit or semi-implicit schemes.

Cheers,

Hugo

[Hugo]

Dear SOFA community,

If no one manifests him/herself against this support drop, it could be voted in the upcoming weeks. Thank you all for your feedback.

Cheers,

Hugo

[Hugo]

Hi Sen,

You are using SOFA RC1 version, which is obsolete for several years and not supported anymore. Please download the latest v16.12 release.

Best,

Hugo

[Hugo]

Dear mbarrow,

I recompiled the SofaCUDA plugin, there’s indeed some scene not working. About the CudaTetrahedronTLEDForceField.scn, it seems that there is some missing files.

I asked about it, and some devs told me that is a pretty old (2009!) piece of code. Would you feel confortable-enough with the CUDA API to look at the implementation?

Best,

Hugo

[Hugo]

Hey octotod,

Any good news on your side ?
Cheers,

Hugo

[Hugo]

Hi Binesh,

Sorry for the delay, we’re quite busy right now.
It should be written this way:

find_package(SofaBase REQUIRED)
...
set(LINKER_DEPENDENCIES ${LINKER_DEPENDENCIES} SofaBaseTopology)
...
target_link_libraries(${PROJECT_NAME} ${LINKER_DEPENDENCIES})

Let me know if it helps.

Hugo

[Hugo]

Hi Sen,

In SOFA, the XML file is read and parsed by runSofa (see in applications/projects/runSofa/Main.cpp line 392), which then instantiates the C++ component.

To write you own scene in C++, please refer to:

• this post
• and the associated documentation

Cheers,

Hugo

[Author]

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