File size: 1,162 Bytes
91daf98 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | import numpy as np
import math
from geometry.curve import Curve
class Arc(Curve):
def __init__(self, point_indices, point_data, is_outer):
assert len(point_indices) == 4, "Arc must be defined by 3 points"
assert point_data is not None
super(Arc, self).__init__(point_indices, point_data)
self.type = 'arc'
self.is_outer = is_outer
self.start = self.point_geom[0, :]
self.mid = self.point_geom[1, :]
self.center = self.point_geom[2, :]
self.end = self.point_geom[3, :]
self.r1 = math.sqrt( (self.start[0] - self.center[0])**2 + (self.start[1] - self.center[1])**2 )
self.r2 = math.sqrt( (self.end[0] - self.center[0])**2 + (self.end[1] - self.center[1])**2 )
self.radius = (self.r1+self.r2)/2
self.start_idx = point_indices[0]
self.mid_idx = point_indices[1]
self.center_idx = point_indices[2]
self.end_idx = point_indices[3]
self.bbox = self.verts_to_bbox(np.vstack([self.start, self.end, self.mid]))
self.bottom_left = np.array([self.bbox[0], self.bbox[2]])
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