def rasterize_stuff(stuff):
if isinstance(stuff, gr.Polygon):
pts = [(pt.x-PADDING, pt.y-PADDING) for pt in poly.points]
return ras.rasterize_poly(pts)
elif isinstance(stuff, gr.Circle):
return ras.rasterize_circle((poly.center.x, poly.center.y),
int(poly.radius))
def check_circle(center, radius):
for x, y in ras.rasterize_circle(center, radius):
if used[x][y]:
new_radius = math.ceil(math.sqrt((x-center[0])**2 + (y-center[1])**2))
if new_radius < radius:
return new_radius
else:
return radius - 1
return None
def circle_fill(ranges, circle_count, minrad, maxrad, decay, postfix):
width = ranges[0][1] - 2*ranges[0][0] + 1
height = ranges[1][1] - 2*ranges[1][0] + 1
used = [[False for y in range(height)] for x in range(width)]
used_count = 0
total_count = width * height
maxrad = original_maxrad = maxrad
fi = maxrad/total_count
def maxrad_no_decay():
pass
def maxrad_uniform_decay():
nonlocal maxrad, fi
maxrad = max(5, int(fi*(total_count - used_count)))
def maxrad_log_decay():
nonlocal maxrad, fi
fi = math.log((1 + (total_count - used_count) / total_count), 2)
maxrad = min(max(5, int(fi*(total_count - used_count))), original_maxrad)
maxrad_decay = {
"none": maxrad_no_decay,
"uniform": maxrad_uniform_decay,
"log": maxrad_log_decay
}[decay]
maxrad_decay()
def check_circle(center, radius):
for x, y in ras.rasterize_circle(center, radius):
if used[x][y]:
new_radius = math.ceil(math.sqrt((x-center[0])**2 + (y-center[1])**2))
if new_radius < radius:
return new_radius
else:
return radius - 1
return None
circles = []
print("Will generate", circle_count, "random circles")
progress = u.make_progressbar(circle_count, timeit=True)
while len(circles) < circle_count:
x, y = random.randint(0, width), random.randint(0, height)
cropdrad = -1
maxrad_cropped = min(x, y, width-x, height-y, maxrad)
for radius in range(0, maxrad_cropped):
if used[x-radius][y] or used[x+radius][y] or used[x][y-radius] or used[x][y+radius]:
break
cropdrad = radius
if cropdrad < minrad:
continue
radius = cropdrad
while radius >= minrad:
new_radius = check_circle((x,y), radius)
if new_radius is None:
for cx, cy in ras.rasterize_circle((x,y), radius):
used[cx][cy] = True
used_count += 1
circles.append(gr.Circle(gr.Point(x + ranges[0][0], y + ranges[1][0]), radius))
maxrad_decay()
progress()
break
else:
radius = new_radius
print("Area coverage {:.2f}%".format((used_count / total_count) * 100))
if postfix:
print("Postfixing")
progress = u.make_progressbar(len(circles), timeit=True)
for i in range(0, len(circles)):
progress()
for j in range(0, len(circles)):
if i==j:
break
abx = circles[j].center.x - circles[i].center.x
aby = circles[j].center.y - circles[i].center.y
r = circles[j].radius + circles[i].radius
d2 = abd2 = abx**2 + aby**2
if d2 < r**2 - 0.01:
fact = 0.5*(r - math.sqrt(d2)) / math.sqrt(abd2)
abx *= fact
aby *= fact
circles[j].center.x += abx
circles[j].center.y += aby
circles[i].center.x -= abx
circles[i].center.y -= aby
return circles