How to call multiple Makie recipes for heterogeneous collections?

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1

The MWE is self-explanatory:

using GLMakie
import Makie

# type hierarchy
abstract type G end
struct G1 <: G end
struct G2 <: G end

# define recipe for vector of G
Makie.@recipe(MyPlot, gs) do scene
  Makie.Attributes()
end

# split heterogeneous vector into homogeneous vectors
function Makie.plot!(plot::MyPlot{<:Tuple{AbstractVector{<:G}}})
  # retrieve unique types
  Gs = unique(map(typeof, plot.gs[])) # issue 1

  # register compute node and dispatch plot for each type
  for (i, G) in enumerate(Gs)
    # add indices to compute graph
    guid = Symbol(:inds, i)
    Makie.map!(plot, :gs, guid) do gs
      findall(g -> g isa G, gs)
    end

    # dispatch plot for this specific type
    inds = plot[guid][] # issue 2
    plottext!(plot, G, inds)
  end
end

# recipe for type G1
function plottext!(plot::MyPlot, ::Type{G1}, inds)
  Makie.text!(plot, inds, fill(0, length(inds)), text=fill("G1", length(inds)))
end

# recipe for type G2
function plottext!(plot::MyPlot, ::Type{G2}, inds)
  Makie.text!(plot, inds, fill(0, length(inds)), text=fill("G2", length(inds)))
end

# initialize plot
gs = Observable([G1(), G2(), G1(), G2()])
myplot(gs)

# doesn't work
gs[] = [G1(), G1()]

I’ve marked the code with issue 1 and issue 2, which are the two places where I needed direct access to node contents. Is there any method to make this plot interactive?

2

If you know all the types at first call, you can set it up statically. If you don’t, probably easiest to use plotlist like in the other post.