-- Compose existing idle sprites at the same foot anchor for proportion review.
local paths={app.params.commander,app.params.before,app.params.after,app.params.fiddler}
local atlas=Image(192,256,ColorMode.RGB)
for col,path in ipairs(paths) do
  local src=app.open(path)
  atlas:drawImage(src.cels[1].image,Point((col-1)*48,0))
  src:close()
end
local out=Sprite(192,256,ColorMode.RGB);out.cels[1].image=atlas
app.command.SpriteSize{ui=false,width=576,height=768,method='nearest-neighbor'}
out:saveAs(app.params.output);out:close()
local front=Image(192,64,ColorMode.RGB);front:drawImage(atlas,Point(0,0))
out=Sprite(192,64,ColorMode.RGB);out.cels[1].image=front
app.command.SpriteSize{ui=false,width=576,height=192,method='nearest-neighbor'}
out:saveAs(app.params.front);out:close()