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Custom torus connectors

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Elod Csirmaz 2024-08-16 01:30:12 +01:00
parent 8b5d63efab
commit ce87745b14
1 changed files with 20 additions and 9 deletions
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29
openscad_py.py
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@ -144,6 +144,9 @@ class Point:
def __rmul__(self, other): def __rmul__(self, other):
return self.scale(other) return self.scale(other)
def __neg__(self):
return self.scale(-1.)
class Object: class Object:
"""Abstract class for an SCAD object""" """Abstract class for an SCAD object"""
@ -291,20 +294,28 @@ class Polyhedron(Object):
self.convexity = convexity self.convexity = convexity
@classmethod @classmethod
def torus(cls, points: List[List[TUnion[list, Point]]], convexity: int = 10): def torus(cls, points: List[List[TUnion[list, Point]]], torus_connect_offset: int = 0, convexity: int = 10):
"""Construct a torus-like polyhedron from a 2D array of points. """Construct a torus-like polyhedron from a 2D array of points.
Each row of points must be oriented clickwise when looking from the first row (loop) toward the next. Each row of points must be oriented clickwise when looking from the first row (loop) toward the next.
The rows of points form loops. The rows of points form loops.
points: A 2D array of points
torus_connect_offset: int, Whether to shift which points are connected in a torus in the last segment
convexity: int, see OpensCAD
""" """
return cls.tube(points=points, convexity=convexity, make_torus=True) return cls.tube(points=points, convexity=convexity, make_torus=True, torus_connect_offset=torus_connect_offset)
@classmethod @classmethod
def tube(cls, points: List[List[TUnion[list, Point]]], convexity: int = 10, make_torus: bool = False): def tube(cls, points: List[List[TUnion[list, Point]]], make_torus: bool = False, torus_connect_offset: int = 0, convexity: int = 10):
"""Construct a tube-like polyhedron from a 2D array of points. """Construct a tube-like polyhedron from a 2D array of points.
Each row of points must be oriented clockwise when looking at the pipe at the start inwards. Each row of points must be oriented clockwise when looking at the pipe at the start inwards.
The rows of points form loops. The rows of points form loops.
If `make_torus`, create a torus-like shape instead of a pipe with ends.
points: A 2D array of points
make_torus: bool, Whether to create a torus-like shape instead of a pipe with ends
torus_connect_offset: int, Whether to shift which points are connected in a torus in the last segment
convexity: int, see OpensCAD
""" """
rows = len(points) rows = len(points)
row_len = len(points[0]) row_len = len(points[0])
@ -343,12 +354,12 @@ class Polyhedron(Object):
else: else:
# Connect the end to the start # Connect the end to the start
for col_ix in range(1, row_len): for col_ix in range(row_len):
faces.append([ faces.append([
point_map[(0, col_ix-1)], point_map[(0, (col_ix-1+torus_connect_offset)%row_len)],
point_map[(0, col_ix)], point_map[(0, (col_ix+torus_connect_offset)%row_len)],
point_map[(rows-1, col_ix)], point_map[(rows-1, col_ix%row_len)],
point_map[(rows-1, col_ix-1)] point_map[(rows-1, (col_ix-1)%row_len)]
]) ])
return cls(points=point_list, faces=faces, convexity=convexity) return cls(points=point_list, faces=faces, convexity=convexity)