Make deformation of wireframe work for superparametric elements

[KnutAM]

Supersedes 2nd part of #119

Minimum reproducer

using Ferrite, FerriteViz
import GLMakie as Plt

grid = generate_grid(Quadrilateral, (2, 2))

dh = DofHandler(grid)
add!(dh, :u, 2, Lagrange{2,RefCube,2}())
close!(dh)

a = zeros(ndofs(dh))

apply_analytical!(a, dh, :u, x -> rand(Vec{2})/5)

plotter = MakiePlotter(dh, a)

wireframe(plotter; deformation_field=:u)

On master gives the following error

Details

ERROR: DimensionMismatch: parent has 18 elements, which is incompatible with size (2, 4)
Stacktrace:
  [1] _throw_dmrs(n::Int64, str::String, dims::Tuple{Int64, Int64})
    @ Base .\reshapedarray.jl:182
  [2] _reshape
    @ .\reshapedarray.jl:177 [inlined]
  [3] reshape
    @ .\reshapedarray.jl:112 [inlined]
  [4] dof_to_node(dh::DofHandler{2, Grid{2, Quadrilateral, Float64}}, u::Vector{Float64}; field_name::Symbol)
    @ FerriteViz C:\Users\meyer\.julia\dev\FerriteViz\src\utils.jl:582
  [5] dof_to_node
    @ C:\Users\meyer\.julia\dev\FerriteViz\src\utils.jl:573 [inlined]
  [6] (::FerriteViz.var"#53#69"{DataType, MakiePlotter{…}})(arg1#247::Vector{Float64}, arg2#248::Symbol)
    @ FerriteViz C:\Users\meyer\.julia\dev\FerriteViz\src\makieplotting.jl:192
  [7] #map#13
    @ Observables C:\Users\meyer\.julia\packages\Observables\YdEbO\src\Observables.jl:570 [inlined]
  [8] map(f::FerriteViz.var"#53#69"{…}, arg1::Observables.Observable{…}, args::Observables.Observable{…})
    @ Observables C:\Users\meyer\.julia\packages\Observables\YdEbO\src\Observables.jl:568
  [9] plot!(WF::MakieCore.Combined{FerriteViz.wireframe, Tuple{MakiePlotter{…}}})
    @ FerriteViz C:\Users\meyer\.julia\dev\FerriteViz\src\makieplotting.jl:188
 [10] plot!(scene::Makie.Scene, P::Type{…}, attributes::MakieCore.Attributes, input::Tuple{…}, args::Observables.Observable{…})
    @ Makie C:\Users\meyer\.julia\packages\Makie\RgxaV\src\interfaces.jl:398
 [11] plot!(scene::Makie.Scene, P::Type{…}, attributes::MakieCore.Attributes, args::MakiePlotter{…}; kw_attributes::@Kwargs{})
    @ Makie C:\Users\meyer\.julia\packages\Makie\RgxaV\src\interfaces.jl:310
 [12] plot!(scene::Makie.Scene, P::Type{…}, attributes::MakieCore.Attributes, args::MakiePlotter{…})
    @ Makie C:\Users\meyer\.julia\packages\Makie\RgxaV\src\interfaces.jl:275
 [13] get_axis(fig::Any, P::Any, axis_kw::Dict, plot_attr::Any, plot_args::Any)
    @ Makie C:\Users\meyer\.julia\packages\Makie\RgxaV\src\figureplotting.jl:46
 [14] plot(P::Type{…}, args::MakiePlotter{…}; axis::@NamedTuple{}, figure::@NamedTuple{}, kw_attributes::@Kwargs{…})
    @ Makie C:\Users\meyer\.julia\packages\Makie\RgxaV\src\figureplotting.jl:65
 [15] plot
    @ Makie C:\Users\meyer\.julia\packages\Makie\RgxaV\src\figureplotting.jl:58 [inlined]
 [16] #wireframe#49
    @ FerriteViz C:\Users\meyer\.julia\packages\MakieCore\tAY2U\src\recipes.jl:35 [inlined]
 [17] top-level scope
    @ C:\Users\meyer\.julia\dev\FerriteViz\mwe\PR121\mwe.jl:16
Some type information was truncated. Use `show(err)` to see complete types.

Added some draft code for how this could be adopted to Ferrite#master / v1.0

[koehlerson]

ah thats annoying but seems like no other option than collecting?

[KnutAM]

From the comment below, looks like I haven't tested with reinterpreted array, but not sure if even a transposed array works... But if it does, I guess one could branch for 2d and collect only for that case. For master / v1 the vtk-style output ([Nx1] / [Nx3]) could also be used instead of Vector{Vec}, but that is using an internal Ferrite detail.