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