I have used open cascade in one of a projects at my work. I can sum it up with following: - documentation is not much, i often had to debug and dive into the source code to find out what was happening - the examples are cool and all, but if you want to do something more complex - you are on your own, the forum is not really much alive, you often need to wait some time until you get some kind of response

What has helped me a lot is this project https://docs.xbim.net/- a .NET Wrapper for OpenCascade and an IFC Reader. The source code is easy to understand and i could just dive into it and see how to handle some of the more complex Open Cascade functions.

Unfortunately Open Cascade leaves a lot to be desired in terms of robustness and accuracy compared to e.g. Parasolid.

There isn't a lot of choice in the open source world, unfortunately. You have open cascade and cgal, and that's about it.

Must be somewhat reasonable, FreeCAD uses the library.

I came across Open Cascade while researching how to create an Onshape app and/or a standalone system that would resemble Onshape but for a fairly specific use case. Realizing the complexity was out of my league, I put it on the back burner. Seeing it here though has reignited my interest in it. If I wanted to build an app that would launch in a tab in an Obshape document, could it be built with Open Cascade? Even if it can be, is there a better way to do it? How do these answers change if I also want to have a standalone system (still web based) to offer non Onshapers?

Thanks!

I'm using OC for some online 3d models merging and export with a c# wrapper. Never knew about alternatives. Thank you HN!