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Simplify stroked arc bounding box calculation

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jaseg 2023-04-23 23:22:56 +02:00
parent a93d118773
commit aaaf96e8d9
1 changed files with 2 additions and 17 deletions
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19
gerbonara/graphic_primitives.py
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@ -218,23 +218,8 @@ class Arc(GraphicPrimitive):
def bounding_box(self):
r = self.width/2
endpoints = add_bounds(Circle(self.x1, self.y1, r).bounding_box(), Circle(self.x2, self.y2, r).bounding_box())
arc_r = math.dist((self.cx, self.cy), (self.x1, self.y1))
# extend C -> P1 line by line width / 2 along radius
dx, dy = self.x1 - self.cx, self.y1 - self.cy
x1 = self.x1 + dx/arc_r * r
y1 = self.y1 + dy/arc_r * r
# same for C -> P2
dx, dy = self.x2 - self.cx, self.y2 - self.cy
x2 = self.x2 + dx/arc_r * r
y2 = self.y2 + dy/arc_r * r
arc = arc_bounds(x1, y1, x2, y2, self.cx, self.cy, self.clockwise)
return add_bounds(endpoints, arc) # FIXME add "include_center" switch
(min_x, min_y), (max_x, max_y) = arc_bounds(self.x1, self.y1, self.x2, self.y2, self.cx, self.cy, self.clockwise)
return (min_x-r, min_y-r), (max_x+r, max_y+r)
def to_svg(self, fg='black', bg='white', tag=Tag):
color = fg if self.polarity_dark else bg