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separate optomechanical experiments to own package

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Jukka Aho
2017-07-30 19:24:43 +03:00
parent 419edd97c8
commit 3cc43fafd2
3 changed files with 0 additions and 210 deletions
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test/test_find_edge_intersections.jl
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# This file is a part of JuliaFEM.
# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
using JuliaFEM
using JuliaFEM.Testing
@testset "find intersection of Seg3 element" begin
el = Element(Seg3, [1, 2, 3])
update!(el, "geometry", Vector{Float64}[[0.0, 1.0], [1.0, 0.0], sqrt(2.0)/2.0*[1.0, 1.0]])
s = [ 1.0, 0.5]
d = [-1.0, 0.0]
t, xi = find_intersection(el, s, d, 0.0)
x = el("geometry", xi, 0.0)
@test isapprox(x, [0.8604093371313943, 0.5])
end
@testset "find intersection of 2. order NSeg element" begin
# this is a exact quarter of circle
a = 1.0
b = 1.0
el = Element(NSeg, [1, 2, 3])
el.properties.order = 2
el.properties.knots = [0.0, 0.0, 0.0, 1.0, 1.0, 1.0]
el.properties.weights = [1.0, 1.0, 2.0]
update!(el, "geometry", Vector{Float64}[[a, 0], [a, b], [0, b]])
s = [ 1.0, 0.5]
d = [-1.0, 0.0]
t, xi = find_intersection(el, s, d, 0.0)
X = el("geometry", xi, 0.0)
@test isapprox(X, [sqrt(3)/2, 1/2])
end
@testset "find intersection of 1. order NSurf" begin
# node ordering, it's not same as in Quad4
el = Element(NSurf, [1, 2, 3, 4])
el.properties.order_u = 1
el.properties.order_v = 1
el.properties.knots_u = [0.0, 0.0, 1.0, 1.0]
el.properties.knots_v = [0.0, 0.0, 1.0, 1.0]
el.properties.weights = ones(2, 2)
# +-- v
# |
# u
nodes = Vector{Float64}[[0.0,0.0,0.0], [1.0,0.0,0.0],
[0.0,1.0,0.0], [1.0,1.0,0.0]]
update!(el, "geometry", nodes)
s = [0.5, 0.5, 0.5]
d = [0.0, 0.0, -1.0]
t, xi = find_intersection(el, s, d, 0.0)
X = el("geometry", xi, 0.0)
@test isapprox(X, [0.5, 0.5, 0.0])
k = calc_reflection(el, xi, d, 0.0)
@test isapprox(k, [0.0, 0.0, 1.0])
s = [1.5, 1.5, 0.5]
t, xi = find_intersection(el, s, d, 0.0)
@test isnan(t)
end
@testset "find intersection of 3. order NSeg element with multiple reflections" begin
el = Element(NSeg, [1, 2, 3, 4])
el.properties.order = 3
el.properties.knots = [0.0, 0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0]
el.properties.weights = [1.0, 1/3, 1/3, 1.0]
update!(el, "geometry", Vector{Float64}[[1, 0], [1, 2], [-1, 2], [-1, 0]])
s1 = [-sqrt(3)/2.0, 0.0]
k1 = [ 0.0, 1.0]
t1, xi1 = find_intersection(el, s1, k1, 0.0)
s2 = el("geometry", xi1, 0.0)
@test isapprox(s2, [-sqrt(3)/2, 0.5])
k2 = calc_reflection(el, xi1, k1, 0.0)
t2, xi2 = find_intersection(el, s2, k2, 0.0; secondary=true)
s3 = el("geometry", xi2, 0.0)
@test isapprox(s3, [0.0, 1.0])
k3 = calc_reflection(el, xi2, k2, 0.0)
t3, xi3 = find_intersection(el, s3, k3, 0.0; secondary=true)
s4 = el("geometry", xi3, 0.0)
@test isapprox(s4, [sqrt(3)/2, 0.5])
end