67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
import collections
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from math import ceil
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from kivy.uix.label import Label
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MapCoords = collections.namedtuple('MapCoords', ['row', 'col'])
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class HexMapCell(Label):
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def __init__(self, row=0, col=0, **kwargs):
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super(HexMapCell, self).__init__(**kwargs)
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self.coords = MapCoords(row, col)
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## set the cube coordinates of the hexagon
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## as [x, y, z]
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self.cube_coords = self.even_r_to_cube(self.coords.row / 3, self.coords.col / 2)
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def even_r_to_cube(self, row, col):
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'''compute cube coordinates from even-r hex coordinates'''
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x = int(col - ceil(float(row)/2))
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z = row
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y = - x - z
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return([x, y, z])
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def cube_to_even_r(self, x, y, z):
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row = int(x + ceil(z / 2))
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col = z
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return ([row, col])
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@property
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def even_r_coords(self):
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'''return even-r coordinates of the hexagon.'''
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return(self.cube_to_even_r(*self.cube_coords))
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@even_r_coords.setter
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def even_r_coords(self, value):
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self.cube_coords = self.even_r_to_cube(*value)
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def coordinate_text(self):
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return '({}, {})'.format(self.coords.row, self.coords.col)
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def even_r_coordinate_text(self):
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return '{}'.format(self.even_r_coords)
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def cube_coordinate_text(self):
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return '{}\n{}\n{}'.format(*self.cube_coords)
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def map_display_text(self):
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return "{}\n{}".format(self.even_r_coordinate_text(), self.cube_coordinate_text())
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def update_pos(self, instance, value):
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# Determine the location of the solid hexagon cell. Needs to be offset from the centre of the hex.
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radius = 2 * self.height
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solid_x = self.x - self.height*2
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solid_y = self.y - self.height*2
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solid_size = (4*self.height, 4*self.height)
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# Resize the outline of the cell.
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self.ell.circle = (self.x, self.y, radius, 0, 360, 6)
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# Resize the actual cell.
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self.solid.pos = (solid_x, solid_y)
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self.solid.size = solid_size
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self.coord_label.center_x = self.x
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self.coord_label.center_y = self.y
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