error: ‘get’ is not a member of ‘pangolin’

[wamiq-reyaz]

I was trying to get DeepSDF setup and that has pangolin as a dependency. I have some very weird errors that crop up when trying to run this file.

I changed one thing in gplatfrom.h on line 82 where instead of gl.h I import glew.h

/home/parawr/Projects/scenegraphs/external/DeepSDF/src/PreprocessMesh.cpp:37:21: error: ‘get’ is not a member of ‘pangolin’
pangolin::get<pangolin::Image<uint32_t>>(it_vert_indices->second);
^~~
/home/parawr/Projects/scenegraphs/external/DeepSDF/src/PreprocessMesh.cpp:37:21: note: suggested alternative: ‘Widget’
pangolin::get<pangolin::Image<uint32_t>>(it_vert_indices->second);
^~~
Widget
/home/parawr/Projects/scenegraphs/external/DeepSDF/src/PreprocessMesh.cpp:37:49: error: expected primary-expression before ‘>’ token
pangolin::get<pangolin::Image<uint32_t>>(it_vert_indices->second);

Any idea what could be causing this?

[stevenlovegrove]

Was it working before your change? Pangolin will already include glew.h so I'm not sure why your change was needed?

pangolin::get was just an alias for C++14 get, or a compat library if that wasn't available. That isn't used any more on the master branch I don't think. If you changed the include order, it probably just wasn't including the compatibility header.

[SMY19999]

DeepSDF is published in 2019, so I install the version around 2019——v0.6, it works! Hope to help you.

[wetoo-cando]

I replaced pangolin::get calls with std::get calls based on @stevenlovegrove's comment above.

Additionally, I also had to change prog.SetUniform("ttt", 1.0, 0, 0, 1); calls to prog.SetUniform("ttt", 1.0, 0.0, 0.0, 1.0); (the last three arguments has to be changed to floats) to satisfy the new GLSL API.

Other changes I need to make were to the CMakeLists.txt file:

• Added set(CMAKE_CXX_STANDARD 17) <-- same as the one in Pangolin master CMakeLists.txt
• Had to extend the list of target_link_libraries to target_link_libraries(PreprocessMesh PRIVATE CLI11::CLI11 pango_core pango_display pango_geometry pango_glgeometry GLEW cnpy Eigen3::Eigen nanoflann::nanoflann) based on the hint from #81

With the above changes, I was able to build DeepSDF successfully with the Pangolin master branch.