nl_tokens: Writes booleans indicating which pixel corners lay inside a field s edges to a bitmap . Returns the bounds within which writing took place .
pl_tokens: function _populateSelectionGrid ( bmp , geo , w , h ) { var w_rect = τ  , h_rect = π  ; var min_x = floor ( geo . min_λ  _rect  ) , max_x = ceil ( geo . max_λ  _rect  ) , min_y = <mask> ( geo . min_φ  _rect  ) , max_y = ceil ( geo . max_φ  _rect  ) ; for ( let x = min_x ; x <= max_x ; x += 1 ) { for ( let y = min_y ; y <= max_y ; y += 1 ) { bmp . write ( x % w , y , inside ( [ x * w_rect - π, _rect   / 2 , geo . vertices ) ) ; } } return { min_x , max_x , min_y , max_y } ; }