I found an interesting issue about vtkSDL2OpenGLRenderWindow::SetSize when changed canvas for VTK WASM 3D window.The related post on the website is Change Canvas For VTK WASM Project. The interface SetSize can work if it was used before m_RenderWindowInteractor->SetRenderWindow( newWin );.It means the 3D window will become smaller or bigger than the outer shell. The red object Read more…
There are some errors and warnings after I changed canvas for VTK wasm. The related post: https://www.weiy.city/2023/11/change-canvas-for-vtk-wasm-project/ We need to free up graphics resources with the old window before we render again. worker.cpp:
Environment:VTK Branch_v9.1.0emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.39 I tested two interfaces for pick operation of vtkPropPicker on web page. The result value is awalys 0. Invoking code: There are warning on browser log: Maybe that’s a bug of VTK For WebAssembly. All source code has been Read more…
Sometimes we need to change canvas for VTK WASM 3D window.Updating renderer window and renderer is neccessary if we don’t restart all data loading.The related post is Change Canvas For VTK WASM Project. I got the following error info on the web page if do vtkSDL2OpenGLRenderWindow::Render before m_RenderWindow = newWin; (update the old rendererWindow variable). Read more…
Test environment: Ubuntu 22.04.2 LTSGoogle Chromeemcc 3.1.33clang version 17.0.0Target: wasm32-unknown-emscripten Write a simple test program. main.c: Compile it with DWARF debug information included. Download chrome (stable version): https://www.google.com/chrome/ Install chrome on ubuntu. Set up a light http server for viewing it on chrome. Then open the web page at http://0.0.0.0:4001/main.html Read more…
The post demonstrates the process of configuring the 3D window after switching from the original canvas to another. After clicking on the update button at the bottom-left position on the webpage, we will call Worker::ChangeRenderWindow to handle the scene. index.html: The interface in worker.cpp: The whole project had been uploaded Read more…
The project shows how to call JS function defined in web page by CPP code. Here is files tree for projThe images display the directory tree of the project. The main logic code about our question: worker.cpp index.html The whole project had been uploaded to GItHub: https://github.com/theArcticOcean/tutorials/tree/main/learnWebAssembly/CppWasm The build way Read more…
Here are our files in project: Add a simple C function in lib.c: Get wasm without glue js file Download the wasm file and use the interface in html Result:
My old CPlusPlus project which uses VTK to display 3D scene worked on web page as wasm file. But after upgrading emsdk and compiling the multithreaded version of VTK, I always get the following error on the web page. I test VTK example at vtk/src/Examples/Emscripten/Cxx/Cone from GitHub. But the similar Read more…