Export

Cad

This module provides functions for exporting CAD data to different formats. It includes functions for exporting to STEP, IGES, and STL formats.

diffinytrace.export.cad.lens_to_solid(lens, resolution: int, tol: float = 0.001, smoothing=None, minDeg: int = 1, maxDeg: int = 3) → Solid[source]

Convert a lens object to a CAD solid.

Parameters:

  • lens – The lens object to be converted.

  • resolution (int) – Resolution of the CAD model.

  • tol (float) – Tolerance for the CAD model.

  • smoothing – Smoothing parameter for the CAD model.

  • minDeg (int) – Minimum degree for the B-spline surface.

  • maxDeg (int) – Maximum degree for the B-spline surface.

Returns:

The CAD solid representing the lens.

Return type:

cq.Solid

diffinytrace.export.cad.extract_knots_and_multiplicities(knots: List[float]) → Tuple[List[float], List[int]][source]

Extract unique knots and their multiplicities from a knot vector.

Parameters:

knots (List[float]) – The knot vector with implicit multiplicities.

Returns:

A list of unique knots. multiplicities (List[int]): A list of multiplicities corresponding to the unique knots.

Return type:

unique_knots (List[float])

diffinytrace.export.cad.makeNurbsFace(control_points, weights, U1, U2, u_degree: int, v_degree: int, u_periodic: bool = False, v_periodic: bool = False) → Face[source]

Create a B-spline surface from control points, weights, and implicit knot vectors.

Parameters:

  • control_points (list) – 2D list of control points as Vectors.

  • weights (list) – 2D list of weights for each control point.

  • U1 (list) – Knot vector in U direction with implicit multiplicities.

  • U2 (list) – Knot vector in V direction with implicit multiplicities.

  • u_degree (int) – Degree of the B-spline in the U direction.

  • v_degree (int) – Degree of the B-spline in the V direction.

  • u_periodic (bool) – If True, makes the surface periodic in the U direction.

  • v_periodic (bool) – If True, makes the surface periodic in the V direction.

Returns:

Face instance representing the B-spline surface.

Return type:

cq.Face

diffinytrace.export.cad.makeBsplineFace(control_points, U1, U2, u_degree: int, v_degree: int, u_periodic: bool = False, v_periodic: bool = False) → Face[source]

Create a non-rational B-spline surface face from control points and knot vectors.

Parameters:

  • control_points (np.ndarray) – 2D array of control points (shape: [num_u, num_v, 3]).

  • U1 (list) – Knot vector in U direction with implicit multiplicities.

  • U2 (list) – Knot vector in V direction with implicit multiplicities.

  • u_degree (int) – Degree of the B-spline in the U direction.

  • v_degree (int) – Degree of the B-spline in the V direction.

  • u_periodic (bool, optional) – If True, makes the surface periodic in the U direction. Defaults to False.

  • v_periodic (bool, optional) – If True, makes the surface periodic in the V direction. Defaults to False.

Returns:

Face instance representing the B-spline surface.

Return type:

cq.Face

diffinytrace.export.cad.export_lens(file_path: str, lens, resolution: int, tol: float = 0.001)[source]

Export a lens to a CAD file.

Parameters:

  • file_path (str) – The path to save the CAD file.

  • lens – The lens object to be exported.

  • resolution (int) – Resolution of the CAD model.

  • tol (float) – Tolerance for the CAD model.

Module Contents