GBS is header library for computing bspline curves and surfaces.
GBS is compatible with OpenCASCADE, curves and surfaces can be converted to OpenCASCADE's objects.
Example of point cloud approximation:
Example of points surface interpolation:
Example of curve-surface intersection:
Example of loft-surface creation:
Example of surface approximation of points:
Example of curve 2d variable offset:
Example of curve on surface:
Example of python code to interpolate points
pts = [
[0.,0.,0],
[0.,0.,1],
[1.,0.,0.5],
[1.,1.,1]
]
constraints = []
for p in pts:
constraints.append([p])
degree = 2
crv = gbs.interpolate_cn_3d_d(
constraints,
degree,
gbs.KnotsCalcMode.CHORD_LENGTH
)For now, this lib is to be used inside a conda environment with the following package installed:
- nlopt
- eigen3
- boost >= 1.74
The optional module gbs-occt requires the additional package:
- occt >=7.4.0
The optional module render requires the additional package:
- vtk >=9.0
The python bindings requires the additional package:
- pybind11
The test library needs:
- gtest
- occt>=7.4.0
- sundials
Warning tests relative to performances evaluation should be run in release mode
As GBS base is a header library it doesn’t need compilation.
If one needs to compile the optional module gbs-occt, -DUSE_OCCT_UTILS:BOOL=TRUE shall be added to cmake command. If one needs to compile the optional module render, -DUSE_RENDER:BOOL=TRUE shall be added to cmake command. If one needs to compile the optional module python-bindings, -DUSE_PYTHON_BINDINGS=TRUE shall be added to cmake command.
The full test suite, which require the optional module gbs-occt, please add -DGBS_BUILD_TESTS:BOOL=TRUE to the cmake command.