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Line 29:
Line 29: − + − def _calculate_position(self, radius, icon_size, index, children_count):+ − width, height = self.box.get_allocation() − # angle decreases as the radius increases − inc = 12.0 + index / 6.0 − angle = index * (2 * math.pi / inc) - math.pi / 2 − # radius is proportional to index/children_count − myminimum = _MINIMUM_RADIUS * .667 − newradius = ((radius - myminimum) * (index * 1.1) / children_count) + − myminimum − x = newradius * math.cos(angle) + (width - icon_size) / 2 − y = newradius * math.sin(angle) + (height - icon_size - − style.GRID_CELL_SIZE) / 2 − return x, y − </pre>]] − − def _calculate_position(self, radius, icon_size, index, children_count): − width, height = self.box.get_allocation() − # include an offset (8) to the index − # so that the center of the spiral is left blank − # angle = n * 137.5 degree or 2.4 radians − angle = (index + 8) * 2.4 − − # radius = constant * sqrt(n) − radius = (_MINIMUM_RADIUS / 5) * math.sqrt(index + 8) − − x = radius * math.cos(angle) + (width - icon_size) / 2 − y = radius * math.sin(angle) + (height - icon_size - − style.GRID_CELL_SIZE) / 2 − − return x, y − </pre>]]
→Sandbox
* [[User:Walter/sandbox]]
* [[User:Walter/sandbox]]
* [[User:Walter/favoritelayout.py]]
* [[User:Walter/favoritelayout.py]]
[[Image:Spiral.png|thumb|left|<pre>
[[Image:Spiral.png|thumb|left|Spiral Home View]]
[[Image:FermatSpiral.png|thumb|left|Fermat Spiral]]
[[Image:FermatSpiral.png|thumb|left|<pre>