cgltf VS assimp

If you want to go all the way, https://learnopengl.com/ is a favorite around here. You could build a glTF viewer from scratch starting from that tutorial and https://github.com/jkuhlmann/cgltf and eventually building towards https://google.github.io/filament/Filament.html or whatever wacky artsy direction you like.

Use https://github.com/jkuhlmann/cgltf to parse the files. https://github.com/ocornut/imgui for your UI. Maybe https://www.libsdl.org/ just to set up a window, handle mouse clicks and initialize the GL context in that window.

Use glTF and https://github.com/jkuhlmann/cgltf Or, looks like you are using C#, so https://github.com/vpenades/SharpGLTF

Do you really have to use fbx? An open format like gltf is better supported, and there are bazillions loaders(I use cgltf without any issues, which is also used by raylib, Unigine and bgfx). It's also a perfect fit for OpenGL.

I recently discovered this pattern in cgltf (https://github.com/jkuhlmann/cgltf), and I agree, it makes deployment so much nicer.

Use https://github.com/jkuhlmann/cgltf It’s the most popular loader.

It's easy to generate a BVH for a generated triangle set (like a fractal pyramid or a dense cube). But, quickly generating a high quality BVH for a loaded model requires some research. Use https://github.com/jkuhlmann/cgltf to load models.

Write a simple glTF viewer in OpenGL. This is a throw-away warm-up. So, don't fret over the code. Don't do anything complicated. Shoot for a simple, forward renderer for a simple, animated character with trivial Phong lighting, diffuse map, normal map and a basic directional shadow map. Use OpenGL ES 3.0/GL 4.3 API with no crazy features. Don't worry about performance. Use https://github.com/jkuhlmann/cgltf to load the files. KTX is a great container for textures.

If you use something like libassimp https://github.com/assimp/assimp it will allow you to import these and access the data to generate your Vertex Array Objects then render to a frame buffer object.

The emscripten interface for the assimp library. It runs entirely in the browser, and allows you to import 40+ 3D file formats and access the result in JSON or glTF format. This is not a full port of assimp, but an easy to use interface to access it's functionality.

Have you read the license? It's quite permissive. https://github.com/assimp/assimp/blob/master/LICENSE

I believe assimp is C. There is an example here.

I recommend checking out Assimp for model loading. What graphics API does it use and what did you use for the UI?

@ECHO OFF REM Drag and drop STL files to convert to OBJ files. REM REM https://github.com/assimp/assimp/releases/tag/v3.3.1/ if [%1]==[] goto :end :loop "C:\Program Files\Assimp\bin\x64\assimp.exe" export %1 "%~dpn1.obj" shift if not [%1]==[] goto loop :eof ECHO. ECHO Finished! ECHO. PAUSE EXIT /B %ERRORLEVEL%

Thats is because to do internal test for load things I used blender (open source), but the professional world or at least seems that most of them still uses autodesk maya, and that is how last of 2021 came and final 3D models for the EA was ready to implement but Assimp have a open issude since 2018 relating problems to load animations with .fbx format if it was exported from maya ....

You may be interested in the Open Asset Import Library. I recently replaced my own gltf import with this and it's been a real breeze, and a good reference for basing my own internal models on. Lots of supported file types and language ports.

assimp