Single edge in list causes fillet to fail, works in isolation

[jwagenet]

A single edge captured with Edge.is_interior raises ValueError: Failed creating fillet.../OCP Standard_Failure for entire list, but can make a fillet individually

Excerpt

  edges = base_part.edges().filter_by(Edge.is_interior).filter_by(Axis.X, tolerance=10).sort_by(Edge.length)[-2:].sort_by(Axis.Y)

  # Fails
  fillet(base_part.edges().filter_by(Edge.is_interior), 5)

  # Fails
  fillet(edges, 5)

  # Works
  fillet(edges[0], 5)
  fillet(edges[1], 5)
  fillet(base_part.edges().filter_by(Edge.is_interior), 5)

Full script

from build123d import *
from ocp_vscode import *
from math import radians, tan

base_width = 42 * MM
base_height = 10 * MM
base_back_bottom_angle = 87
base_front_bottom_angle = 72
part_height = 80 * MM
base_length = 122 * MM

base_points = [
    (base_width / 2, 0),
    (base_width / 2 - part_height/tan(radians(base_back_bottom_angle)), part_height),
    (-base_width / 2 + part_height/tan(radians(base_front_bottom_angle)), part_height),
    (-base_width / 2, base_height),
    (-base_width / 2, 0),
    (base_width / 2, 0),
]

rect_width = 42 * MM
rect_height = 65 * MM
rect_back_spacing = 5 * MM
rect_bottom_spacing = 10 * MM
rect_rotation = 90 - base_back_bottom_angle
rect_offset_x = -rect_back_spacing - (rect_bottom_spacing + rect_height/2) * tan(radians(rect_rotation))
rect_offset_y = (rect_bottom_spacing + rect_height/2) - (base_width/2) * tan(radians(rect_rotation))
rect_length = 42 * MM

hole_diameter = 5 * MM
hole_z_offset = 20 * MM

with BuildPart() as base_part:
    with BuildSketch(Plane.XZ) as base_sketch:
        with BuildLine() as base_line:
            Polyline(base_points)
        make_face()

        with Locations((rect_offset_x, rect_offset_y)):
            Rectangle(rect_width, rect_height, rotation=rect_rotation, mode=Mode.SUBTRACT)
    extrude(amount=base_length/2, both=True)

    with BuildSketch(Plane.XZ) as rect_sketch:
        with BuildLine() as base_line:
            Polyline(base_points)
        make_face()
        with Locations((rect_offset_x, rect_offset_y)):
            Rectangle(rect_width, rect_height, rotation=rect_rotation, mode=Mode.INTERSECT)
    extrude(amount=rect_length/2, both=True)

   edges = base_part.edges().filter_by(Edge.is_interior).filter_by(Axis.X, tolerance=10).sort_by(Edge.length)[-2:].sort_by(Axis.Y)

    # Fails
    fillet(base_part.edges().filter_by(Edge.is_interior), 5)

    # Fails
    fillet(edges, 5)

    # Works
    fillet(edges[0], 5)
    fillet(edges[1], 5)
    fillet(base_part.edges().filter_by(Edge.is_interior), 5)

    show(base_part)

[gumyr]

This appears to be an OCCT bug that is outside of the control of build123d.