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[Arc / Ellipse / Circle] gracefully handle large arclen

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Jan Petykiewicz 2026-03-31 21:42:16 -07:00
commit 2952e6ef8f
4 changed files with 16 additions and 3 deletions
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2
masque/shapes/arc.py
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@ -268,7 +268,7 @@ class Arc(PositionableImpl, Shape):
""" Figure out the parameter values at which we should place vertices to meet the arclength constraint"""
dr = -wh if inner else wh
n_pts = numpy.ceil(2 * pi * max(self.radii + dr) / max_arclen).astype(int)
n_pts = max(2, int(numpy.ceil(2 * pi * max(self.radii + dr) / max_arclen)))
arc_lengths, thetas = get_arclens(n_pts, *a_ranges[0 if inner else 1], dr=dr)
keep = [0]

2
masque/shapes/circle.py
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@ -108,7 +108,7 @@ class Circle(PositionableImpl, Shape):
n += [num_vertices]
if max_arclen is not None:
n += [2 * pi * self.radius / max_arclen]
num_vertices = int(round(max(n)))
num_vertices = max(3, int(round(max(n))))
thetas = numpy.linspace(2 * pi, 0, num_vertices, endpoint=False)
xs = numpy.cos(thetas) * self.radius
ys = numpy.sin(thetas) * self.radius

2
masque/shapes/ellipse.py
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@ -168,7 +168,7 @@ class Ellipse(PositionableImpl, Shape):
n += [num_vertices]
if max_arclen is not None:
n += [perimeter / max_arclen]
num_vertices = int(round(max(n)))
num_vertices = max(3, int(round(max(n))))
thetas = numpy.linspace(2 * pi, 0, num_vertices, endpoint=False)
sin_th, cos_th = (numpy.sin(thetas), numpy.cos(thetas))