TilingProcessor

tomas2004

Hello Matthias,

I'm looking into the TilingProcessor feature and came along your example:

layout = ... # the layout
cell = ... # the top cell's index
layout = ... # the input layer

class MyReceiver < RBA::TileOutputReceiver
  def put(ix, iy, tile, obj, dbu, clip)
    puts "got area for tile #{ix+1},#{iy+1}: #{obj.to_s}"
  end
end

tp = RBA::TilingProcessor::new

# register the custom receiver
tp.output("my_receiver", MyReceiver::new)
tp.input("the_input", layout.begin_shapes(cell, layer))
tp.tile_size(100, 100)  # 100x100 um tile size
# The script clips the input at the tile and computes the (merged) area:
tp.queue("_output(my_receiver, (the_input & _tile).area)")
tp.execute("Job description")

I would like to store the area values in an array instead of putting them to the console. I'm using a global variable to do this. Is this a good idea or is there a better way?

$tile_areas = []
...
class MyReceiver < TileOutputReceiver

          def put(ix, iy, tile, obj, dbu, clip)

            area = (obj*dbu**2).round(4)

            puts "Area for tile #{ix+1},#{iy+1}: #{area.to_s}"

            $tile_areas << [ix+1, iy+1, area]

          end # def

end # class

Cheers,

Tomas

Matthias

Hi @tomas2004,

Global variables are never good as you don't know if someone else creates a variable with the same name.

Try collecting the values inside the receiver:

class MyReceiver < TileOutputReceiver

  def initialize
    @tile_areas = []
  end

  # getter
  def tile_areas
     @tile_areas
  end

  def put(ix, iy, tile, obj, dbu, clip)
    area = (obj*dbu**2).round(4)
    @tile_areas << [ix+1, iy+1, area]
  end # def

end # class

...
receiver = MyReceiver::new
tp.output("my_receiver", receiver)
...

tile_areas = receiver.tile_areas 

Matthias

tomas2004

Hello Matthias,

Agreed, this looks way better :-)

Cheers,

Tomas