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lib/vivid/transformable/arc.ex
defimpl Vivid.Transformable, for: Vivid.Arc do
alias Vivid.{Arc, Transformable, Path}
@doc """
Many of the transformations can't be applied to an Arc, but we
can convert it to a path and then use that to apply transformations.
"""
def transform(arc, fun) do
arc
|> Arc.to_path
|> Stream.map(&Transformable.transform(&1, fun))
|> Enum.into(Path.init)
end
end