flow = "generate_pixels"

[[input]]
name = "size"
type = "array/number"

[[output]]
name = "pixels"

[[process]]
alias = "height"
source = "lib://flowstdlib/math/subtract"
input.i2 = { once = 1 }

[[connection]]
from = "input/size/1" # 'height' of ['width', 'height'] size input array
to = "height/i1"

# Sequence of y-coordinates
[[process]]
alias = "y-sequence"
source = "lib://flowstdlib/math/sequence"
input.start = { once = 0 }
input.step = { once = 1 }

[[connection]]
from = "height"
to = "y-sequence/limit"

[[process]]
alias = "width-gate"
source = "lib://flowstdlib/control/join"

[[connection]]
from = "y-sequence/sequence"
to = "width-gate/control"

[[connection]]
from = "input/size/0" # 'width' of ['width', 'height'] size input array
to = "width-gate/data"

# loopback width gate
[[connection]]
from = "width-gate"
to = "width-gate/data"

# we need to duplicate the y-coord for each x-coord in each row
[[process]]
alias = "y-duplicator"
source = "lib://flowstdlib/data/duplicate"

# Connect y value to a duplicator that will produce 'width' instances of it
[[connection]]
from = "y-sequence/sequence"
to = "y-duplicator/value"

[[connection]]
from = "width-gate"
to = "y-duplicator/factor"

# pass each duplicated row thru enumerate to add the x coordinate to each y value
[[process]]
source = "lib://flowstdlib/data/enumerate"

[[connection]]
from = "y-duplicator"
to = "enumerate"

[[connection]]
from = "enumerate"
to = "output/pixels"