def label_distance_to_angle(label_point, angle):
"""
If outside of the convex area, then distance is very high.
:param point:
:param angle:
:return:
"""
caa = cartesian_angle(angle.b, angle.a)
cam = cartesian_angle(angle.b, label_point)
cac = cartesian_angle(angle.b, angle.c)
dm = signed_distance_between_cartesian_angles(cam, caa)
dc = signed_distance_between_cartesian_angles(cac, caa)
cav = caa + dc/2.0
if cav > 2*np.pi:
cav -= 2*np.pi
cad = min(signed_distance_between_cartesian_angles(cam, cav), signed_distance_between_cartesian_angles(cav, cam))
dist = distance_between_points(label_point, angle.b)
if dc > dm:
return dist*(1+cad+dc)
else:
return 100*dist # effectively infinite
def label_distance_to_angle(label_point, angle):
"""
If outside of the convex area, then distance is very high.
:param point:
:param angle:
:return:
"""
caa = cartesian_angle(angle.b, angle.a)
cam = cartesian_angle(angle.b, label_point)
cac = cartesian_angle(angle.b, angle.c)
dm = signed_distance_between_cartesian_angles(cam, caa)
dc = signed_distance_between_cartesian_angles(cac, caa)
cav = caa + dc / 2.0
if cav > 2 * np.pi:
cav -= 2 * np.pi
cad = min(signed_distance_between_cartesian_angles(cam, cav),
signed_distance_between_cartesian_angles(cav, cam))
dist = distance_between_points(label_point, angle.b)
if dc > dm:
return dist * (1 + cad + dc)
else:
return 100 * dist # effectively infinite
def Parallel(line_0, line_1):
a0 = cartesian_angle(*line_0)
a1 = cartesian_angle(*line_1) + np.pi / 2
da = horizontal_angle(signed_distance_between_cartesian_angles(a0, a1))
return Equals(da, np.pi / 2)
def Perpendicular(l0, l1):
# return Equals((l0.b.y-l0.a.y)*(l1.b.y-l1.a.y), (l0.a.x-l0.b.x)*(l1.b.x-l1.a.x))
a0 = cartesian_angle(*l0)
a1 = cartesian_angle(*l1)
da = horizontal_angle(signed_distance_between_cartesian_angles(a0, a1))
return Equals(da, np.pi / 2)