56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
"""Auto-converted from polyholes.scad — cadbuildr.foundation port."""
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from cadbuildr.foundation import (
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Part, Sketch, Point,
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Square, Rectangle, Circle, RegularPolygon, RectangleRounded,
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Extrusion, Lathe, Hole,
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Cylinder, Box, Sphere, Cone,
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show,
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)
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import math
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# === SCAD constants reproduced verbatim ===
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def sides(r):
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return max(round(4 * r), 3)
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def corrected_radius(r, n):
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return 0.1 + r / math.cos(math.pi / n)
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def corrected_diameter(d):
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n = sides(d / 2)
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return 0.2 + d / math.cos(math.pi / n)
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# Default demo: poly_cylinder r=5, h=10
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DEMO_R = 5
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DEMO_H = 10
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class Polyholes(Part):
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def __init__(self, r=DEMO_R, h=DEMO_H):
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super().__init__()
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sketch = self._sketch = Sketch(self.xy())
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n = sides(r)
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cr = corrected_radius(r, n)
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# polyCylinder: cylinder with corrected radius
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self._add_cyl(0, 0, 0, cr, h)
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def _pt(self, x, y):
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return Point(self._sketch, x, y)
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def _add_box(self, x, y, z, w, d, h, cut=False):
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self.add_operation(Box(self._pt(x, y), w, d, h, cut=cut))
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def _add_cyl(self, x, y, z, radius, height, cut=False):
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self.add_operation(Cylinder(self._pt(x, y), radius, height, cut=cut))
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def _add_cone(self, x, y, z, r1, r2, height):
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self.add_operation(Cone(self._pt(x, y), r1, r2, height))
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def _add_sphere(self, x, y, z, radius, cut=False):
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self.add_operation(Sphere(self._pt(x, y), radius, cut=cut))
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def _add_extrusion(self, shape, end, start=0, cut=False):
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self.add_operation(Extrusion(shape, end=end, start=start, cut=cut))
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part = Polyholes()
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show(part)
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