def initialPosition(self, low=2, up=12):
"Returns List of Objects. This list is a position, i.e, a pattern of circles inside a container"
initGrid = self.initialGrid # initial grid, only inside points
#objects = []
numObj = random.randint(low, up)
while (len(self.objects) < numObj) and initGrid:
p = random.choice(
initGrid) # select a point from grid, point is a tuple (x,y)
idxp = initGrid.index(
p) # index of selected point in the list initGrid
r = random.choice(self.radii) # Choose randomly an object
circle = Circle(*p, radius=r) # Set circle in selected point p
#if len(self.objects): # if there are at least two cirlcles in the list
#flag = True
while any(circle.overlapping(obj) for obj in self.objects):
#flag = any(circle.overlapping(obj) for obj in self.objects)
#if flag:
p = random.choice(initGrid) # select point
circle.center = p # assign another center
idxp = initGrid.index(p) # index of selected point
initGrid.pop(idxp) # remove from init list
self.removeOutside()
#if circle.is_outside(self.grid): # test if circle is outside
# circle.radius = min(self.radii) # try with minimum radius for verify. It is a point in the inside frontier
self.objects.append(circle)
#pts.append(initGrid.pop(idxp)) # remove from init list and put in list of points
initGrid = set(initGrid) - set(self.grid.coverage(
circle)) # forbidden points for next iteration
initGrid = list(initGrid) # update grid points
for obj, c in zip(self.objects, cycle(Circle.colors)):
obj.color = c
return self.objects
def initialGrid(self):
'Initial grid for selecting random initial points'
coords_xInside = self.grid.xcoords[
1:
-1] # only coordinates inside container, for this reason remove the first and last element
coords_yInside = self.grid.ycoords[
1:-1] # only coordinates inside container
Radius = min(self.radii) # choose a minimum radii
x, y = coords_xInside[0], coords_yInside[
0] # choose the very first point (corner point)
circle = Circle(x, y, Radius) # set a circle in a choosen point
while circle.is_outside(self.grid): # test if circle is outside
coords_yInside = coords_yInside[1:-1] # update list
coords_xInside = coords_xInside[1:-1] # update list
x, y = coords_xInside[0], coords_yInside[
0] # choose the first point, this is a corner point
circle.center = x, y # set a circle in the new point
return list(product(coords_xInside, coords_yInside))