#=
201: Square using SimplexGridBuilder
([source code](https://github.com/j-fu/SimplexGridFactory.jl/raw/master/examples/Example201_Square.jl))
=#
module Example201_Square
using SimplexGridFactory
using ExtendableGrids
function main(;Plotter=nothing)
builder=SimplexGridBuilder(dim_space=2)
p1=point!(builder,0,0)
p2=point!(builder,1,0)
p3=point!(builder,1,1)
p4=point!(builder,0,1)
facet!(builder,p1,p2,region=1)
facet!(builder,p2,p3,region=2)
facet!(builder,p3,p4,region=3)
facet!(builder,p4,p1,region=4)
cellregion!(builder,0.5,0.5,region=1,volume=0.01)
grid=simplexgrid(builder)
@show grid
plot(grid,Plotter=Plotter)
(num_nodes(grid),num_cells(grid),num_bfaces(grid))
end
function test()
main()==(89,144,32)
end
end
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