def make_text_center_line(self, sideline1, sideline2, center_line, radius, \
tcl_mask, radius_map, sin_map, cos_map, expand=0.2, shrink=1):
# TODO: shrink 1/2 * radius at two line end
for i in range(shrink, len(center_line) - 1 - shrink):
c1 = center_line[i]
c2 = center_line[i + 1]
top1 = sideline1[i]
top2 = sideline1[i + 1]
bottom1 = sideline2[i]
bottom2 = sideline2[i + 1]
sin_theta = vector_sin(c2 - c1)
cos_theta = vector_cos(c2 - c1)
p1 = c1 + (top1 - c1) * expand
p2 = c1 + (bottom1 - c1) * expand
p3 = c2 + (bottom2 - c2) * expand
p4 = c2 + (top2 - c2) * expand
polygon = np.stack([p1, p2, p3, p4])
self.fill_polygon(tcl_mask, polygon, value=1)
self.fill_polygon(radius_map, polygon, value=radius[i])
self.fill_polygon(sin_map, polygon, value=sin_theta)
self.fill_polygon(cos_map, polygon, value=cos_theta)
def stride(disks, other_contour, left, step=0.3):
if len(disks) < 2:
return False
if left:
last_point, before_point = disks[:2]
else:
before_point, last_point = disks[-2:]
radius = last_point[2]
cos = vector_cos(last_point[:2] - before_point[:2])
sin = vector_sin(last_point[:2] - before_point[:2])
new_point = last_point[:2] + radius * step * np.array([cos, sin])
return self.in_contour(other_contour, new_point)