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# WebAssembly ConeFullScreen Example
This example aims to provide a base example on how to write a VTK viewer for
WebAssembly while adding callback to monitor browser size to adjust the rendering canvas.
## Compiling example against VTK
We assume inside the `work/` directory to find the source of VTK under `src/`
and its build tree under `build-vtk-wasm`.
If VTK is not built yet, please follow the guide `../README.md`.
Let's create the build directory for our example
```
mkdir -p work/build-conefullscreen
```
Start docker inside that working directory
```
docker run --rm --entrypoint /bin/bash -v $PWD:/work -it dockcross/web-wasm:20200416-a6b6635
cd /work/build-conefullscreen
cmake \
-G Ninja \
-DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} \
-DVTK_DIR=/work/build-vtk-wasm \
/work/src/Examples/Emscripten/Cxx/ConeFullScreen
cmake --build .
```
## Serve and test generated code
```
cd work/build-conefullscreen
python3 -m http.server 8000
```
Open your browser to http://localhost:8000
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