From 5013aeeb8ddc90276c9f6eb8177d377954502e97 Mon Sep 17 00:00:00 2001
From: Aadesha <aadeshdeshmukh25@gmail.com>
Date: Mon, 29 Apr 2019 22:31:26 +0530
Subject: [PATCH] getter function for the generator of a Zonotope

Update Zonotope.jl

Update Zonotope.jl

Update representations.md

Update unit_Zonotope.jl
---
 docs/src/lib/representations.md |  1 +
 src/Zonotope.jl                 | 19 ++++++++++++++++++-
 test/unit_Zonotope.jl           |  1 +
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/docs/src/lib/representations.md b/docs/src/lib/representations.md
index be65d7807d..787c45c1b3 100644
--- a/docs/src/lib/representations.md
+++ b/docs/src/lib/representations.md
@@ -635,6 +635,7 @@ constraints_list(::Zonotope{N}) where {N<:Real}
 constraints_list(::Zonotope{N}) where {N<:AbstractFloat}
 center(::Zonotope{N}) where {N<:Real}
 order(::Zonotope)
+generators(Z::Zonotope)
 minkowski_sum(::Zonotope{N}, ::Zonotope{N}) where {N<:Real}
 linear_map(::AbstractMatrix{N}, ::Zonotope{N}) where {N<:Real}
 translate(::Zonotope{N}, ::AbstractVector{N}) where {N<:Real}
diff --git a/src/Zonotope.jl b/src/Zonotope.jl
index 2085f31824..4590adf224 100644
--- a/src/Zonotope.jl
+++ b/src/Zonotope.jl
@@ -9,7 +9,8 @@ export Zonotope,
        scale,
        ngens,
        reduce_order,
-       constraints_list
+       constraints_list,
+       generators
 
 """
     Zonotope{N<:Real} <: AbstractCentrallySymmetricPolytope{N}
@@ -129,6 +130,22 @@ function center(Z::Zonotope{N})::Vector{N} where {N<:Real}
     return Z.center
 end
 
+"""
+   generators(Z::Zonotope)
+
+Return the generators of a zonotope.
+
+### Input
+
+- `Z` -- zonotope
+
+### Output
+
+The generators of the zonotope.
+"""
+function generators(Z::Zonotope)
+    return Z.generators
+end
 
 # --- AbstractPolytope interface functions ---
 
diff --git a/test/unit_Zonotope.jl b/test/unit_Zonotope.jl
index c88db5912c..c782af13fb 100644
--- a/test/unit_Zonotope.jl
+++ b/test/unit_Zonotope.jl
@@ -102,6 +102,7 @@ for N in [Float64, Rational{Int}, Float32]
     # test number of generators
     Z = Zonotope(N[2, 1], N[-0.5 1.5 0.5 1; 0.5 1.5 1 0.5])
     @test ngens(Z) == 4
+    @test generators(Z) == Z.generators
     # test order reduction
     Zred1 = reduce_order(Z, 1)
     @test ngens(Zred1) == 2