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import random
import math
class IconLayout:
DISTANCE_THRESHOLD = 120.0
def __init__(self, grid):
self._icons = []
self._grid = grid
[self._x1, self._y1] = self._grid.convert_to_canvas(1, 1)
[self._x2, self._y2] = self._grid.convert_to_canvas(78, 59)
def add_icon(self, icon):
self._icons.append(icon)
self._layout_icon(icon)
def remove_icon(self, icon):
self._icons.remove(icon)
def _distance(self, icon1, icon2):
a = icon2.props.x - icon1.props.x
b = icon2.props.y - icon1.props.y
return math.sqrt(a * a + b * b)
def _spread_icons(self):
self._stable = True
for icon1 in self._icons:
vx = 0
vy = 0
for icon2 in self._icons:
if icon1 != icon2:
distance = self._distance(icon1, icon2)
if distance <= IconLayout.DISTANCE_THRESHOLD:
self._stable = False
vx += icon1.props.x - icon2.props.x
vy += icon1.props.y - icon2.props.y
new_x = icon1.props.x + vx
new_y = icon1.props.y + vy
new_x = max(self._x1, new_x)
new_y = max(self._y1, new_y)
new_x = min(self._x2 - icon1.props.size, new_x)
new_y = min(self._y2 - icon1.props.size, new_y)
icon1.props.x = new_x
icon1.props.y = new_y
def _layout_icon(self, icon):
x = random.random() * (self._x2 - self._x1 - icon.props.size)
y = random.random() * (self._y2 - self._y1 - icon.props.size)
icon.props.x = x + self._x1
icon.props.y = y + self._y1
tries = 10
self._spread_icons()
while not self._stable and tries > 0:
self._spread_icons()
tries -= 1
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