def draw_angle2(image,
angle,
offset=(0, 0),
color=(0, 0, 255),
thickness=1,
color2=(255, 0, 0),
thickness2=1):
line0 = instantiators['line'](angle.b, angle.a)
line1 = instantiators['line'](angle.b, angle.c)
# draw_line(image, line0, offset=offset, color=color, thickness=thickness)
# draw_line(image, line1, offset=offset, color=color, thickness=thickness)
# radius = 0.3 * min(line_length(line0), line_length(line1))
radius = 12
circle = instantiators['circle'](angle.b, radius)
# FIXME : this arc definition is broken. Okay for now, but needs to fix.
arc = instantiators['arc'](circle, angle.a, angle.c)
caa = cartesian_angle(arc.circle.center, arc.a) * 180 / np.pi
cab = cartesian_angle(arc.circle.center, arc.b) * 180 / np.pi
if caa > cab:
caa -= 360
if cab - caa > 95:
return image
center = tuple(round_vector(np.array(arc.circle.center) + offset))
radius = int(round(arc.circle.radius))
return cv2.ellipse(image, center, (radius, radius), 0, caa, cab, color2,
thickness2)
def draw_arc(image, arc, offset=(0, 0), color=(0, 0, 255), thickness=1):
caa = cartesian_angle(arc.circle.center, arc.a) * 180/np.pi
cab = cartesian_angle(arc.circle.center, arc.b) * 180/np.pi
if caa > cab:
caa -= 360
center = tuple(round_vector(np.array(arc.circle.center) + offset))
radius = int(round(arc.circle.radius))
cv2.ellipse(image, center, (radius, radius), 0, caa, cab, color, thickness)
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)
