New Motion

.buildkite/pipeline.yml

@@ -1,5 +1,14 @@
 steps:
-  - label: ":pipeline: Launch Tests"
+  - label: ":pipeline: Upload NoMotion Tests"
+    env:
+      TEST_GROUP: "nomotion"
+    command: buildkite-agent pipeline upload .buildkite/runtests.yml
+    agents:
+      queue: "juliagpu"
+
+  - label: ":pipeline: Upload Motion Tests"
+    env:
+      TEST_GROUP: "motion"
     command: buildkite-agent pipeline upload .buildkite/runtests.yml
     agents:
       queue: "juliagpu"

.buildkite/runtests.yml

@@ -1,11 +1,11 @@
 steps:
-  - group: ":julia: Tests"
+  - group: ":julia: ($TEST_GROUP) Tests"
     steps:
       - label: "CPU: Run tests on v{{matrix.version}}"
         matrix:
           setup:
             version:
-              - "1.9"
+              - "1.10"
               - "1"
         plugins:
           - JuliaCI/julia#v1:
@@ -15,6 +15,8 @@ steps:
               dirs:
                 - KomaMRICore/src
                 - KomaMRICore/ext
+        env:
+          TEST_GROUP: $TEST_GROUP
         command: |
           julia -e 'println("--- :julia: Instantiating project")
               using Pkg
@@ -34,6 +36,7 @@ steps:
         matrix:
           setup:
             version:
+              - "1.10"
               - "1"
         plugins:
           - JuliaCI/julia#v1:
@@ -43,6 +46,8 @@ steps:
               dirs:
                 - KomaMRICore/src
                 - KomaMRICore/ext
+        env:
+          TEST_GROUP: $TEST_GROUP
         command: |
           julia -e 'println("--- :julia: Instantiating project")
               using Pkg
@@ -67,7 +72,7 @@ steps:
         matrix:
           setup:
             version:
-              - "1.9"
+              - "1.10"
               - "1"
         plugins:
           - JuliaCI/julia#v1:
@@ -77,6 +82,8 @@ steps:
               dirs:
                 - KomaMRICore/src
                 - KomaMRICore/ext
+        env:
+          TEST_GROUP: $TEST_GROUP
         command: |
           julia -e 'println("--- :julia: Instantiating project")
               using Pkg
@@ -101,11 +108,13 @@ steps:
         matrix:
           setup:
             version:
-              - "1.9"
+              - "1.10"
               - "1"
         plugins:
           - JuliaCI/julia#v1:
               version: "{{matrix.version}}"
+        env:
+          TEST_GROUP: $TEST_GROUP
         command: |
           julia -e 'println("--- :julia: Instantiating project")
               using Pkg
@@ -131,7 +140,7 @@ steps:
         matrix:
           setup:
             version:
-              - "1.9"
+              - "1.10"
               - "1"
         plugins:
           - JuliaCI/julia#v1:
@@ -141,6 +150,8 @@ steps:
               dirs:
                 - KomaMRICore/src
                 - KomaMRICore/ext
+        env:
+          TEST_GROUP: $TEST_GROUP
         command: |
           julia -e 'println("--- :julia: Instantiating project")
               using Pkg

.github/workflows/CI.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.9' # Replace this with the minimum Julia version that your package supports. E.g. if your package requires Julia 1.5 or higher, change this to '1.5'.
+          - '1.10' # Replace this with the minimum Julia version that your package supports. E.g. if your package requires Julia 1.5 or higher, change this to '1.5'.
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
         os: [ubuntu-latest, windows-latest, macos-12] # macos-latest] <- M1 Mac was generating problems #386, commented for now
         arch: [x64]

KomaMRIBase/src/KomaMRIBase.jl

@@ -25,13 +25,14 @@ include("datatypes/sequence/ADC.jl")
 include("timing/KeyValuesCalculation.jl")
 include("datatypes/Sequence.jl")
 include("datatypes/sequence/Delay.jl")
+# Motion
+include("motion/MotionSet.jl")
 # Phantom
 include("datatypes/Phantom.jl")
 # Simulator
 include("datatypes/simulation/DiscreteSequence.jl")
 include("timing/TimeStepCalculation.jl")
 include("timing/TrapezoidalIntegration.jl")
-include("timing/UnitTime.jl")
 
 # Main
 export γ    # gyro-magnetic ratio [Hz/T]
@@ -47,11 +48,12 @@ export kfoldperm, trapz, cumtrapz
 # Phantom
 export brain_phantom2D, brain_phantom3D, pelvis_phantom2D, heart_phantom
 # Motion
-export MotionModel
-export NoMotion, SimpleMotion, ArbitraryMotion
-export SimpleMotionType
-export Translation, Rotation, HeartBeat
-export PeriodicTranslation, PeriodicRotation, PeriodicHeartBeat
+export MotionList, NoMotion, Motion
+export Translate, TranslateX, TranslateY, TranslateZ
+export Rotate, RotateX, RotateY, RotateZ 
+export HeartBeat, Path, FlowPath
+export TimeRange, Periodic
+export SpinRange, AllSpins
 export get_spin_coords
 # Secondary
 export get_kspace, rotx, roty, rotz

KomaMRIBase/src/datatypes/Phantom.jl

@@ -1,10 +1,3 @@
-abstract type MotionModel{T<:Real} end
-
-#Motion models:
-include("phantom/motion/SimpleMotion.jl")
-include("phantom/motion/ArbitraryMotion.jl")
-include("phantom/motion/NoMotion.jl")
-
 """
     obj = Phantom(name, x, y, z, ρ, T1, T2, T2s, Δw, Dλ1, Dλ2, Dθ, motion)
 
@@ -24,7 +17,7 @@
 - `Dλ1`: (`::AbstractVector{T<:Real}`) spin Dλ1 (diffusion) parameter vector
 - `Dλ2`: (`::AbstractVector{T<:Real}`) spin Dλ2 (diffusion) parameter vector
 - `Dθ`: (`::AbstractVector{T<:Real}`) spin Dθ (diffusion) parameter vector
-- `motion`: (`::MotionModel{T<:Real}`) motion model
+- `motion`: (`::AbstractMotionSet{T<:Real}`) motion set
 
 # Returns
 - `obj`: (`::Phantom`) Phantom struct
@@ -54,9 +47,12 @@
     Dθ::AbstractVector{T}  = zeros(eltype(x), size(x))
     #Diff::Vector{DiffusionModel}  #Diffusion map
     #Motion
-    motion::MotionModel{T} = NoMotion{eltype(x)}()
+    motion::AbstractMotionSet{T} = NoMotion{eltype(x)}() 
 end
 
+const NON_STRING_PHANTOM_FIELDS = Iterators.filter(x -> fieldtype(Phantom, x) != String,         fieldnames(Phantom))
+const VECTOR_PHANTOM_FIELDS     = Iterators.filter(x -> fieldtype(Phantom, x) <: AbstractVector, fieldnames(Phantom))
+
 """Size and length of a phantom"""
 size(x::Phantom) = size(x.ρ)
 Base.length(x::Phantom) = length(x.ρ)
@@ -65,43 +61,45 @@
 Base.iterate(x::Phantom, i::Integer) = (i <= length(x)) ? (x[i], i + 1) : nothing
 Base.lastindex(x::Phantom) = length(x)
 Base.getindex(x::Phantom, i::Integer) = x[i:i]
+Base.view(x::Phantom, i::Integer) = @view(x[i:i])
 
 """Compare two phantoms"""
-Base.:(==)(obj1::Phantom, obj2::Phantom) = reduce(
-    &,
-    [getfield(obj1, field) == getfield(obj2, field) for field in Iterators.filter(x -> !(x == :name), fieldnames(Phantom))],
-)
-Base.:(≈)(obj1::Phantom, obj2::Phantom)      = reduce(&, [getfield(obj1, field) ≈ getfield(obj2, field) for field in Iterators.filter(x -> !(x == :name), fieldnames(Phantom))])
-Base.:(==)(m1::MotionModel, m2::MotionModel) = false
-Base.:(≈)(m1::MotionModel, m2::MotionModel)  = false
+function Base.:(==)(obj1::Phantom, obj2::Phantom)
+    if length(obj1) != length(obj2) return false end
+    return reduce(&, [getfield(obj1, field) == getfield(obj2, field) for field in NON_STRING_PHANTOM_FIELDS])
+end
+function Base.:(≈)(obj1::Phantom, obj2::Phantom)
+    if length(obj1) != length(obj2) return false end
+    return reduce(&, [getfield(obj1, field)  ≈ getfield(obj2, field) for field in NON_STRING_PHANTOM_FIELDS])
+end
 
 """Separate object spins in a sub-group"""
-Base.getindex(obj::Phantom, p::Union{AbstractRange,AbstractVector,Colon}) = begin
+function Base.getindex(obj::Phantom, p)
     fields = []
-    for field in Iterators.filter(x -> !(x == :name), fieldnames(Phantom))
+    for field in NON_STRING_PHANTOM_FIELDS
         push!(fields, (field, getfield(obj, field)[p]))
     end
     return Phantom(; name=obj.name, fields...)
 end
-
-"""Separate object spins in a sub-group (lightweigth)."""
-Base.view(obj::Phantom, p::Union{AbstractRange,AbstractVector,Colon}) = begin
+function Base.view(obj::Phantom, p)
     fields = []
-    for field in Iterators.filter(x -> !(x == :name), fieldnames(Phantom))
+    for field in NON_STRING_PHANTOM_FIELDS
         push!(fields, (field, @view(getfield(obj, field)[p])))
     end
     return Phantom(; name=obj.name, fields...)
 end
 
 """Addition of phantoms"""
 +(obj1::Phantom, obj2::Phantom) = begin
+    name = first(obj1.name * "+" * obj2.name, 50) # The name is limited to 50 characters
     fields = []
-    for field in Iterators.filter(x -> !(x == :name), fieldnames(Phantom))
+    for field in VECTOR_PHANTOM_FIELDS
         push!(fields, (field, [getfield(obj1, field); getfield(obj2, field)]))
     end
-    Nmaxchars = 50
-    name = first(obj1.name * "+" * obj2.name, Nmaxchars)
-    return Phantom(; name=name, fields...)
+    return Phantom(; 
+        name = name, 
+        fields..., 
+        motion = vcat(obj1.motion, obj2.motion, length(obj1), length(obj2)))
 end
 
 """Scalar multiplication of a phantom"""
@@ -121,25 +119,30 @@
 end
 
 """
-    obj = heart_phantom(...)
+    obj = heart_phantom(
+        circumferential_strain, radial_strain, rotation_angle; 
+        heart_rate, asymmetry
+    )
 
 Heart-like LV 2D phantom. The variable `circumferential_strain` and `radial_strain` are for streching (if positive) 
 or contraction (if negative). `rotation_angle` is for rotation.
 
-# Arguments
-- `circumferential_strain`: (`::Real`, `=-0.3`) contraction parameter
-- `radial_strain`: (`::Real`, `=-0.3`) contraction parameter
-- `rotation_angle`: (`::Real`, `=1`) rotation parameter
+# Keywords
+- `circumferential_strain`: (`::Real`, `=-0.3`) contraction parameter. Between -1 and 1
+- `radial_strain`: (`::Real`, `=-0.3`) contraction parameter. Between -1 and 1
+- `rotation_angle`: (`::Real`, `=15.0`, `[º]`) maximum rotation angle
+- `heart_rate`: (`::Real`, `=60`, `[bpm]`) heartbeat frequency
+- `temporal_asymmetry`: (`::Real`, `=0.2`) time fraction of the period in which the systole occurs. Therefore, diastole lasts for `period * (1 - temporal_asymmetry)`
 
 # Returns
-- `phantom`: (`::Phantom`) Heart-like LV phantom struct
+- `obj`: (`::Phantom`) Heart-like LV phantom struct
 """
-function heart_phantom(
+function heart_phantom(;
     circumferential_strain=-0.3,
     radial_strain=-0.3,
-    rotation_angle=15.0;
+    rotation_angle=15.0,
     heart_rate=60,
-    asymmetry=0.2,
+    temporal_asymmetry=0.2,
 )
     #PARAMETERS
     FOV = 10e-2 # [m] Diameter ventricule
@@ -177,16 +180,15 @@
         Dλ1=Dλ1[ρ .!= 0],
         Dλ2=Dλ2[ρ .!= 0],
         Dθ=Dθ[ρ .!= 0],
-        motion=SimpleMotion(
-            PeriodicHeartBeat(;
-                period=period,
-                asymmetry=asymmetry,
-                circumferential_strain=circumferential_strain,
-                radial_strain=radial_strain,
-                longitudinal_strain=0.0,
+        motion=MotionList(
+            HeartBeat(
+                circumferential_strain,
+                radial_strain,
+                0.0,
+                Periodic(; period=period, asymmetry=temporal_asymmetry),
             ),
-            PeriodicRotation(;
-                period=period, asymmetry=asymmetry, yaw=rotation_angle, pitch=0.0, roll=0.0
+            Rotate(
+                0.0, 0.0, rotation_angle, Periodic(; period=period, asymmetry=temporal_asymmetry)
             ),
         ),
     )
@@ -318,7 +320,7 @@
 end
 
 """
-    obj = brain_phantom3D(; ss=4, us=1)
+    obj = brain_phantom3D(; ss=4, us=1, start_end=[160,200])
 
 Creates a three-dimentional brain Phantom struct.
 Default ss=4 sample spacing is 2 mm. Original file (ss=1) sample spacing is .5 mm.