The Rasterize protocol is responsible for converting shapes into bitmaps.

If you're defining your own shape then you need to implement this protocol.

Example

iex> use Vivid
...> Box.init(Point.init(1,1), Point.init(4,4))
...> |> Rasterize.rasterize(Bounds.init(0,0,5,5))
#MapSet<[#Vivid.Point<{1, 1}>, #Vivid.Point<{1, 2}>, #Vivid.Point<{1, 3}>, #Vivid.Point<{1, 4}>, #Vivid.Point<{2, 1}>, #Vivid.Point<{2, 4}>, #Vivid.Point<{3, 1}>, #Vivid.Point<{3, 4}>, #Vivid.Point<{4, 1}>, #Vivid.Point<{4, 2}>, #Vivid.Point<{4, 3}>, #Vivid.Point<{4, 4}>]>