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#2019 - Special case concrete Minkowski sum for intervals #2026

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Feb 29, 2020
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#2019 - Special case concrete Minkowski sum for intervals #2026

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6713e8d
special case concrete minkowski sum for intervals
mforets Feb 28, 2020
563b113
Update test/unit_Interval.jl
mforets Feb 28, 2020
90526f7
Update unit_Interval.jl
mforets Feb 28, 2020
d43222a
add docstring
mforets Feb 29, 2020
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4 changes: 4 additions & 0 deletions src/ConcreteOperations/minkowski_sum.jl
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Expand Up @@ -247,3 +247,7 @@ function minkowski_sum(Z1::AbstractZonotope{N}, Z2::AbstractZonotope{N};
Gnew = hcat(genmat(Z1), genmat(Z2))
return Zonotope(cnew, Gnew, remove_zero_generators=remove_zero_generators)
end

function minkowski_sum(x::Interval, y::Interval)
return Interval(x.dat + y.dat)
end
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5 changes: 5 additions & 0 deletions test/unit_Interval.jl
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Expand Up @@ -56,6 +56,11 @@ for N in Ns
v = vertices_list(m)
@test N[1.5] in v && N[-2] in v

# the concrete Minkowski sum of intervals returns an interval
sum_x_y = minkowski_sum(x, y)
@test sum_x_y isa Interval
@test min(sum_x_y) == N[-2] && max(sum_x_y) == N[1.5]
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# subtraction
d = x - y
@test dim(d) == 1
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