Plots of Hamiltonians with VegaLite

[pablosanjose]

... with tooltips, and pan/zoom!

Example

julia> using Quantica, VegaLite

julia> h = LatticePresets.honeycomb() |> hamiltonian(hopping(1)) |> unitcell(8);

julia> vlplot(h)

[codecov-io]

Codecov Report

Merging #57 into master will decrease coverage by 1.28%.
The diff coverage is 0.95%.

@@            Coverage Diff             @@
##           master      #57      +/-   ##
==========================================
- Coverage   57.37%   56.09%   -1.29%     
==========================================
  Files          15       15              
  Lines        2196     2348     +152     
==========================================
+ Hits         1260     1317      +57     
- Misses        936     1031      +95     

Impacted Files	Coverage Δ
src/hamiltonian.jl	67.56% <0.00%> (-1.50%)	⬇️
src/plot_makie.jl	0.00% <0.00%> (ø)
src/plot_vegalite.jl	0.00% <0.00%> (ø)
src/tools.jl	61.70% <0.00%> (-6.14%)	⬇️
src/lattice.jl	65.97% <16.66%> (+0.30%)	⬆️

---

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[pablosanjose]

Current limitations are:

• VegaLite plots are strictly 2D. 3D lattices are projected onto a couples of axes. If true 3D is needed, use Makie.
• z-ordering for hopping/site occlusion in projected 3D is not implemented yet.
• Tooltips of matrix-blocks are displayed in a single line
• VegaLite chokes on large systems currently (10^5 sites or so). Use Makie for those

[pablosanjose]

The test failure seems to be unrelated to the PR