Function tile_range_1d

fn tile_range_1d(image_range: &Range<i32>, regular_tile_size: i32) -> Range<i32>

Compute the range of tiles (in number of tiles) that intersect the provided image range (in pixels) in an arbitrary dimension.

        0
        :
  #-+---+---+---+---+---+--#
  #-+---+---+---+---+---+--#
^       :                   ^

 +------------------------+  image_range
       +---+  regular_tile_size