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- '''
- Created on 25 nov. 2016
- @author: olinox
- '''
- from core import geometry
- from core.pencil.pbase import BasePencil
- class LinePencil(BasePencil):
- def __init__(self, *args):
- BasePencil.__init__(*args)
-
- def _update(self):
- x0, y0 = self.origin
- x, y = self.position
-
- result = set([])
- line = geometry.gline.line2d(self._grid.grid_shape, x0, y0, x, y)
- for x, y in line:
- result |= set( geometry.gzone.zone(self._grid.grid_shape, x, y, self.size) )
-
- self._added = list( result - self._selection )
- self._removed = list( self._selection - result )
- self._selection = list( result )
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