added structures

Project.toml

@@ -4,4 +4,5 @@ authors = ["Anson <anson@ansonbiggs.com>"]
 version = "0.1.0"
 
 [deps]
+DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"

src/AstroHelper.jl

@@ -1,7 +1,8 @@
 module AstroHelper
 using LinearAlgebra
-
+using DataFrames
 
 include("quaternions.jl")
+include("aeStructures.jl")
 
 end # module

src/aeStructures.jl

@@ -0,0 +1,30 @@
+struct Section
+    data::DataFrame
+    xc::Float64
+    yc::Float64
+    Ixx::Float64
+    Iyy::Float64
+    Ixy::Float64
+
+    function Section(A, x, y)
+        d = DataFrame(A=A, x=x, y=y)
+
+        d.Ax = d.A .* d.x
+        d.Ay = d.A .* d.y
+
+        xc = sum(d.Ax) / sum(d.A)
+        yc = sum(d.Ay) / sum(d.A)
+
+        Ixx = sum(d.A .* ((d.y .- yc).^2))
+        Iyy = sum(d.A .* ((d.x .- xc).^2))
+        Ixy = sum(d.A .* ((d.x .- xc) .* (d.y .- yc)))
+
+
+        new(d, xc, yc, Ixx, Iyy, Ixy)
+
+    end 
+
+
+end
+
+

test/runtests.jl

@@ -1,8 +1,9 @@
-using AstroHelper
 using Test
 
-import AstroHelper
+import AstroHelper: Quaternion, Section
 
+
+@testset "AeroHelper" begin
  @testset "Quaternion Initialization" begin
     @test Quaternion().r == 1.0
     @test Quaternion([0,0,0,1]) == Quaternion()
@@ -15,7 +16,15 @@ import AstroHelper
     @test_throws ErrorException Quaternion(1, 2, 3, 4)
  end
 
-@testset "Quaternion Math" begin
+# @testset "Quaternion Math" begin
     # Quaternion Multiplication is not Communitive.
     # @test Quaternion() * Quaternion([0 1 0 0]) != Quaternion([0 1 0 0]) * Quaternion()
+# end
+
+
+    @testset "Section" begin
+    s = Section([2,1,0.5,0.5,0.75,0.75,2], [0,12,24,24,16,8,0], [0,0,0,6,7,8,9])
+    @test all([s.Ixx == 126.075 s.Iyy == 571.2 s.Ixy ≈ -28.2])
+    
+end
 end