GeodesicWalker

Try the online demo here!

A simple project to visualize a mesh walking along geodesics on itself. Powered by geometry-central and Polyscope. Javascript visualization performed by geoptic.js.

To compile the code, use

mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ..

Javascript Version

This can also be compiled to Javascript via Emscripten.

Once you have Emscripten installed, then building this code is just like building an ordinary geometry-central project. Run the following commands from the build directory.

emcmake cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=emcc -DCMAKE_CXX_COMPILER=em++ -DEMSCRIPTEN=True ..
emmake make -j7

This creates two "binaries", bin/embind.js and bin/embind.wasm. Then, you should copy these files into the html directory.

Because of some browser stuff, these embind files need to be served from a server - the page doesn't work if you just open the file locally.

Note that I had to include Eigen as an explicit dependency. Emscripten didn't like geometry-central's fancy on-the-fly Eigen downloader. But if you just include Eigen as a dependency everything works fine.

Switching back from Javascript to local binaries

If you want to compile the ordinary command line version after building the javascript version, you have to tell CMake to use your C compiler again

cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DEMSCRIPTEN=False ..
make -j7