[mikhail]

I think I have figured it out:

with self.object.position.writeableArray() as wa:
     wa[0, 0] = 0.2

does what I want

[mikhail]

It appears like I double posted my last answer. Sorry

[mikhail]

Dear Hugo,

I would like to change the vertex positions on the fly from Python.
However, when I run

self.object.findData('position').value[0][0] = 0.2

I obtain ValueError: assignment destination is read-only. I can read the value without any issues.

Has the API been changed? What should I do instead?

I would like to do it directly from Python because I want to have more control. Thus, no PartialLinearMovementConstraint or similar.

Thank you for your help!

[mikhail]

Dear @Pasquale94,

thank you for the suggestion. If I understand it correctly, the use of hexahedral meshes makes transformation back to voxels obsolete.

Could you please provide a code example. I tried to search for one but I couldn’t find it. I am particularly interested in how to load and export the mesh.

[mikhail]

Somehow I made it work. I took the DiffusionSolverConfig.cmake from the binary installation of Sofa. I could load the example.

Thank you for your help!

[mikhail]

Almost there 🙂

I disabled Upsampling and I could compile. But I forgot to include the PLUGIN_IMAGE. Now when I do it, I get

Adding plugin image
CMake Error at SofaKernel/modules/Sofa.Config/cmake/SofaMacrosConfigure.cmake:343 (find_package):
  By not providing "FindDiffusionSolver.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "DiffusionSolver", but CMake did not find one.

  Could not find a package configuration file provided by "DiffusionSolver"
  with any of the following names:

    DiffusionSolverConfig.cmake
    diffusionsolver-config.cmake

  Add the installation prefix of "DiffusionSolver" to CMAKE_PREFIX_PATH or
  set "DiffusionSolver_DIR" to a directory containing one of the above files.
  If "DiffusionSolver" provides a separate development package or SDK, be
  sure it has been installed.
Call Stack (most recent call first):
  applications/plugins/image/CMakeLists.txt:15 (sofa_find_package)

It doesn’t appear to be in the src directory.

[mikhail]

I took your advice and installed CGAL-5.0.2.

However, I still have my last error from the post #20275.
Could you please tell me how to fix it.

[mikhail]

git clone -b v21.06 https://github.com/sofa-framework/sofa.git sofa/src

What version should I be using instead. Please provide the right git clone command if not only the version is different. Thank you

[mikhail]

Yes,

so far I have figured it out. However, UpsamplePointCloud is more complicated. My C++ knowledge is rather limited 🙁

In file included from /Users/mikhail/sofa/src/applications/plugins/CGALPlugin/src/CGALPlugin/UpsamplePointCloud.cpp:25:
In file included from /usr/local/include/CGAL/edge_aware_upsample_point_set.h:24:
/usr/local/include/CGAL/compute_average_spacing.h:201:5: error: no matching constructor for initialization of 'Point_set_processing_3::internal::Callback_wrapper<Parallel_tag>'
    callback_wrapper (callback, nb_points);
    ^                 ~~~~~~~~~~~~~~~~~~~

[mikhail]

A follow-up:

I took the suggestion of the compiler and replaced helper::types with type.

I could compile CylinderMesh.

Now my error is in Refine2DMesh. Is there an universal fix?

 /Users/mikhail/sofa/src/applications/plugins/CGALPlugin/src/CGALPlugin/Refine2DMesh.inl:387:51: error: no member named 'Vec3' in namespace 'sofa::defaulttype'
            sofa::type::vector<sofa::defaulttype::Vec3> points;
                               ~~~~~~~~~~~~~~~~~~~^
/Users/mikhail/sofa/src/applications/plugins/CGALPlugin/src/CGALPlugin/Refine2DMesh.inl:402:51: error: no member named 'Vec3' in namespace 'sofa::defaulttype'
            sofa::type::vector<sofa::defaulttype::Vec3> points;
                               ~~~~~~~~~~~~~~~~~~~^

[mikhail]

Hi @Sidaty,

Thank you. I made the change you have suggested (defaulttype -> type).

It appears that it has solved the issue with DecimateMesh but it is still there for other components. What should I do?

Users/mikhail/sofa/src/applications/plugins/CGALPlugin/src/CGALPlugin/CylinderMesh.inl:511:50: error: no member named 'types' in namespace 'sofa::helper'; did you mean 'type'?
        vparams->drawTool()->drawPoints(points,8,helper::types::RGBAColor(0.0, 0.0, 1.0,1));
                                                 ^~~~~~~~~~~~~
                                                 type
/Users/mikhail/sofa/src/SofaKernel/modules/Sofa.Type/src/sofa/type/SVector.h:26:17: note: 'type' declared here
namespace sofa::type
                ^
In file included from /Users/mikhail/sofa/src/applications/plugins/CGALPlugin/src/CGALPlugin/CylinderMesh.cpp:25:
/Users/mikhail/sofa/src/applications/plugins/CGALPlugin/src/CGALPlugin/CylinderMesh.inl:518:50: error: no member named 'types' in namespace 'sofa::helper'; did you mean 'type'?

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