From OCP#

Conversion from OCP (OpenCASCADE Python) to volmdlr objects.

Module to translate objects in OCP to Volmdlr.

volmdlr.from_ocp.beziercurve3d_from_ocp(cls, curve)#

Instantiate a volmdlr BezierCurve3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr BezierCurve3D.

volmdlr.from_ocp.bsplinecurve2d_from_ocp(cls, curve)#

Instantiate a volmdlr BSplineCurve2D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr BSplineCurve2D.

volmdlr.from_ocp.bsplinecurve3d_from_ocp(cls, curve)#

Instantiate a volmdlr BSplineCurve3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr BSplineCurve3D.

volmdlr.from_ocp.bsplinecurve_from_ocp(cls, curve)#

Instantiate a volmdlr BSplineCurve, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr BSplineCurve2D.

volmdlr.from_ocp.bsplinesurface_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr BSplineSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr BSplineSurface3D.

volmdlr.from_ocp.circle2d_from_ocp(cls, curve)#

Instantiate a volmdlr Circle2D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr Circle2D.

volmdlr.from_ocp.circle3d_from_ocp(cls, curve)#

Instantiate a volmdlr Circle3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr Circle3D.

volmdlr.from_ocp.conicalsurface_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr ConicalSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr ConicalSurface3D.

volmdlr.from_ocp.curve_from_ocp(occ_curve, curve_cls_dict)#

Instantiate a voldmlr equivalent curve of the given occ_curve.

Parameters:

  • occ_curve – opencascade Geom_Curve

  • curve_cls_dict – Lookup table where the keys are occ curve type and the values the equivalent volmdlr class.

Returns:

volmdlr.curves

volmdlr.from_ocp.cylindricalsurface_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr CylindricalSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr CylindricalSurface3D.

volmdlr.from_ocp.downcast(obj: TopoDS_Shape) → TopoDS_Shape#

Downcast a TopoDS object to suitable specialized type.

volmdlr.from_ocp.edge_from_ocp(ocp_edge: TopoDS_Shape, curves_lut: dict)#

Instantiate a volmdlr edge from an ocp edge.

Parameters:

ocp_edge – ocp edge.

Returns:

Volmdlr edge.

volmdlr.from_ocp.ellipse2d_from_ocp(cls, curve)#

Instantiate a volmdlr Ellipse2D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr Ellipse2D.

volmdlr.from_ocp.ellipse3d_from_ocp(cls, curve)#

Instantiate a volmdlr Ellipse3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr Ellipse3D.

volmdlr.from_ocp.face_from_ocp(cls, occt_face: TopoDS_Shape, occt_to_volmdlr_lut: dict, surface2d_class)#

Translate an OCCT face retrieving its 2D wires into a volmdlr face.

volmdlr.from_ocp.fix(obj: TopoDS_Shape) → TopoDS_Shape#

Fix a TopoDS object to suitable specialized type.

volmdlr.from_ocp.frame2d_from_ocp_ax22d(ax22d)#

Instantiate a volmdlr Frame2D, from occt object.

Parameters:

ax22d – OCCT ax2 2d.

Returns:

volmdlr Frame2D.

volmdlr.from_ocp.frame3d_from_ocp_ax3(ax2)#

Instantiate a volmdlr Frame3D, from occt object.

Parameters:

ax2 – OCCT ax2.

Returns:

volmdlr Frame3D.

volmdlr.from_ocp.get_contour2d_from_face_wire(contour2d_class, wire, face, occt_to_volmdlr)#

Get parametric representation of the face’s wires.

volmdlr.from_ocp.get_faces(shape)#

Get faces from a shape.

Parameters:

shape (OCP.TopoDS.TopoDS_Shape) – The shape.

Returns:

Faces of shape.

Return type:

list[OCP.TopoDS.TopoDS_Face]

volmdlr.from_ocp.get_shells(shape)#

Get shells from a shape.

Parameters:

shape (OCP.TopoDS.TopoDS_Shape) – The shape.

Returns:

Faces of shape.

Return type:

list[OCP.TopoDS.TopoDS_Face]

volmdlr.from_ocp.get_wires(shape)#

Get wires from a shape.

Parameters:

shape (OCP.TopoDS.TopoDS_Shape) – The shape.

Returns:

Wires of shape.

Return type:

list[OCP.TopoDS.TopoDS_Wire]

volmdlr.from_ocp.get_wires_from_face(face)#

Return faces outer wire and a list of inner wires.

volmdlr.from_ocp.hyperbola3d_from_ocp(cls, curve)#

Instantiate a volmdlr Hyperbola3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr Hyperbola3D.

volmdlr.from_ocp.line2d_from_ocp(cls, occt_line)#

Instantiate a volmdlr Line2D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_line – OCCT Line.

Returns:

volmdlr Line2D.

volmdlr.from_ocp.line3d_from_ocp(cls, occt_line)#

Instantiate a volmdlr Line3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_line – OCCT Line 3D.

Returns:

volmdlr Line3D.

volmdlr.from_ocp.parabola3d_from_ocp(cls, curve)#

Instantiate a volmdlr Parabola3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • curve – OCCT curve.

Returns:

volmdlr Parabola3D.

volmdlr.from_ocp.plane_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr Plane3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr Plane3D.

volmdlr.from_ocp.point2d_from_ocp(occt_point)#

Instantiate a volmdlr Point2D, from occt object.

Parameters:

occt_point – OCCT point.

Returns:

volmdlr Point2D.

volmdlr.from_ocp.point3d_from_ocp(occt_point)#

Instantiate a volmdlr Point3D, from occt object.

Parameters:

occt_point – OCCT point.

Returns:

volmdlr Point3D.

volmdlr.from_ocp.point3d_from_ocp_vertex(vertex: TopoDS_Shape)#

Instantiate a volmdlr Point3D, from occt TopoDS_Vertex object.

Parameters:

vertex – OCCT TopoDS_Shape.

Returns:

volmdlr Point3D.

volmdlr.from_ocp.shapetype(obj: TopoDS_Shape) → TopAbs_ShapeEnum#

Return a number from 0 to 7, representing the type of the shape.

COMPOUND = 0 COMPSOLID = 1 SHELL = 2 FACE = 3 WIRE = 4 EDGE = 5 VERTEX = 6 SHAPE = 7

volmdlr.from_ocp.sphericalsurface_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr SphericalSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr SphericalSurface3D.

volmdlr.from_ocp.surface2d_from_ocp_face(cls, contour2d_class, face, occt_to_volmdlr)#

Build a surface 2D (Boundary representation of a face in volmdlr) from an OCP face.

volmdlr.from_ocp.surfaceoflinearextrusion_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr ExtrusionSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr ExtrusionSurface3D.

volmdlr.from_ocp.surfaceofrevolution_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr RevolutionSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr RevolutionSurface3D.

volmdlr.from_ocp.toroidalsurface_from_ocp(cls, occt_surface, **kwargs)#

Instantiate a volmdlr ToroidalSurface3D, from occt object.

Parameters:

  • cls – volmdlr class to be instantiated.

  • occt_surface – OCCT surface.

Returns:

volmdlr ToroidalSurface3D.

volmdlr.from_ocp.trim_bspline_curve(original_curve: Geom_BSplineCurve, u1: float, u2: float) → Geom_BSplineCurve#

Trim a B-spline curve using two curve parameters and create a new B-spline curve.

Parameters:

  • original_curve – The original B-spline curve to trim

  • u1 – The start parameter for trimming

  • u2 – The end parameter for trimming

Returns:

A new trimmed B-spline curve, or None if projection fails

volmdlr.from_ocp.trimmedcurve3d_from_ocp(cls, occt_curve)#

Intanciate an edge from a trimmed curve in OCCT.

Parameters:

occt_curve – occt trimmed curve.

Returns:

Volmdlr trimmed edge.

volmdlr.from_ocp.vector2d_from_ocp(occt_vector)#

Instantiate a volmdlr Vector2D, from occt object.

Parameters:

occt_vector – OCCT Vector.

Returns:

volmdlr Vector2D.

volmdlr.from_ocp.vector3d_from_ocp(occt_vector)#

Instantiate a volmdlr Vector3D, from occt object.

Parameters:

occt_vector – OCCT Vector.

Returns:

volmdlr Vector3D.

volmdlr.from_ocp.volmdlr_edge2d_from_ocp_curve(cls, occt_curve, first, last, orientation)#

Instantiate a volmdlr edge form an occt curve.

Parameters:

  • occt_curve – occt curve.

  • first – first point.

  • last – last point.

  • orientation – orientation of the curve to be considered.

Returns:

Volmdlr trimmed edge.

volmdlr.from_ocp.volmdlr_edge_from_ocp_curve(cls, occt_curve, first, last, orientation)#

Instantiate a volmdlr edge form an occt curve.

Parameters:

  • occt_curve – occt curve.

  • first – first point.

  • last – last point.

  • orientation – orientation of the curve to be considered.

Returns:

Volmdlr trimmed edge.