Onur R. Bingol

Complete trimming module and improve surface trimming operation

2

* Trimming module documentation requires more examples * Surface trimming operation + trimmed tessellation requires improvement

- [ ] Add derivative evaluation code to the volume evaluator classes - [ ] Add corresponding method to the `Volume` class - [ ] Write tests

As of geomdl v5.0.x, control points computation parts of the degree elevation and reduction algorithms are implemented in `helpers` module and they are working. On the other hand, the API...

As discussed in issue #63, provide implementation of the Algorithm A9.6 on pp 417-418 of The NURBS Book.

[REQUEST] Improve documentation on building and linking for OpenVDB static library

5

### Is your feature request related to a problem? Please describe. I have been trying to build OpenVDB as a static library and link it against one of my projects....

`json2on` only supports spline type trim curves. It should support freeform and container trim types. Please refer to [geomdl documentation](https://nurbs-python.readthedocs.io/en/latest/file_formats.html#surface) for details.

[Python ] Cannot find Python

16

**Describe the bug** vcpkg cannot find python development libraries when the python version is v3.9 and finds the system python when python version is 3.8. Python v3.8 is selected via...