Tutorial
compas_occ provides an easy to use interface to the Open Cascade 3D geometry kernel,
built around the Python bindings provided in pythonocc-core.
compas_occ.geometry defines compas_occ.geometry.OCCNurbsCurve
and compas_occ.geometry.OCCNurbsSurface, which are wrappers around the
BSplineCurve and BSplineSurface objects of OCC, repsectively.
The compas_occ wrappers provide an API for working with NURBS curves and surfaces
similar to the API of RhinoCommon.
compas_occ.brep is a package for working with Boundary Representation objects
with the NURBS curves and surfaces of compas_occ.geometry as underlying geometry.
Curves
The simplest way to construct a curve is from its control points.
from compas.geometry import Point
from compas_occ.geometry import OCCNurbsCurve as NurbsCurve
points = [Point(0, 0, 0), Point(3, 3, 0), Point(6, -3, 3), Point(9, 0, 0)]
curve = NurbsCurve.from_points(points)
Other construction methods are
Since OCCNurbsCurve implements the COMPAS data framework,
there are also the following special methods (see Data for more information).
Curves are currently not directly supported by compas_view2.
However, they can be easily visualised by using a high-resolution polyline instead.
from compas.geometry import Point, Polyline
from compas_occ.geometry import OCCNurbsCurve as NurbsCurve
from compas_view2.app import App
points = [Point(0, 0, 0), Point(3, 3, 0), Point(6, -3, 3), Point(9, 0, 0)]
curve = NurbsCurve.from_points(points)
viewer = App()
viewer.add(Polyline(curve.locus()), linewidth=3)
viewer.add(Polyline(curve.points), show_points=True)
viewer.show()
Surfaces
…coming soon…
Data
…coming soon…
Rhino
…coming soon…
Blender
…coming soon…