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f = Figure()
ax = Axis(f[1, 1])
sc = scatter!(randn(10, 2), label = "Points")
text!(randn(10, 2), text = ["hey" for _ in 1:10], color = :red)
leg = Legend(f[1, 2], [sc, []], ["Points", "Location of heys"])
legscene = leg.blockscene.children[1]
leg.grid[1, 1][2, 1] = Label(legscene, "hey", color = :red)
notify(leg.margin) # adjust to new legend size without relayout
f

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function with_indent_message(f, message)
    s = mktemp() do path, io
        redirect_stdout(f, io)
        flush(io)
        str = read(path, String)
        if match(r"^\s*$", str) === nothing
            replace(str, r"^"m => "│ ")
        else
            ""
        end

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using Makie.KernelDensity

x = randn(1000)
k = kde(x, npoints = 200)

f = Figure()
ax = Axis3(f[1, 1], limits = (-4, 4, -4, 4, 0, 1))
p = poly!(ax, Point2f.(k.x, k.density),
    model = Makie.Mat4f([   1 0 0 0
                            0 0 1 4

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f = Figure()
ax = Axis(f[1, 1])
ax2 = Axis(f[1, 1], width = Relative(0.3), height = Relative(0.3), valign = 0.8, halign = 0.8)

p = Point(1, 1)
scatter!(ax, p, markersize = 15)
limits!(ax, 0, 10, 0, 10)

points = lift(ax.scene.px_area, ax.scene.camera.projectionview, ax2.scene.px_area) do pxa, pv, pxa2
    p1 = Makie.bottomright(pxa2) - pxa.origin

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using CairoMakie
using Makie.GeometryBasics

function mandelbrot(x, y)
    z = c = x + y*im
    for i in 1:50.0; abs(z) > 2 && return log(50 - i); z = z^2 + c; end; 0.0
end

# r = Rect(-0.74250066, 0.39089617, 0.43069285, 0.34233275)
r = HyperRectangle{2, Float32}(Float32[-0.62557947, 0.6001665], Float32[0.056850735, 0.041836016])

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using GLMakie


data = Observable(randn(30, 30))
lineindex = Observable(1)
linedata = @lift $data[:, $lineindex]

f, ax, hm = heatmap(data, axis = (; aspect = 1))
selectionrect = @lift Rect2f(0.5, $lineindex-0.5, size($data, 1), 1)
wireframe!(selectionrect, color = :white)

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C_1 = C_a * α_a + C_b1 * (1 - α_a)
C_2 = C_a * α_a + C_b2 * (1 - α_a)

C_1 - C_2 = (C_b1 - C_b2) * (1 - α_a)
1 - (C_1 - C_2) / (C_b1 - C_b2) = α_a

(C_1 - (C_b1 * (1 - α_a))) / α_a = C_a


##

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mutable struct Multiobservable
    value::NamedTuple
    listeners::Vector
end

Multiobservable(nt) = Multiobservable(nt, [])

function Makie.Observables.on(f, m::Multiobservable, syms::Symbol...)
    push!(m.listeners, f)
    f

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@recipe(Barplot3D) do scene
    Attributes(
        color = theme(scene, :markercolor),
        colormap = theme(scene, :colormap),
    )
end

Makie.conversion_trait(::Type{<:Barplot3D}) = Makie.DiscreteSurface()

function Makie.plot!(p::Barplot3D)

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function align_ylabels!(axs...)
    max_extent = maximum(axs) do ax
        tight_yticklabel_spacing!(ax)
        ax.yticklabelspace[]
    end
    for ax in axs
        ax.yticklabelspace = max_extent
    end
    return
end