v3.3.6

VortexStepMethod v3.3.6

Diff since v3.3.5

Added

• calc_forces! and solve_base! (both exported): solve! is now
  solve_base! followed by calc_forces!, so a frozen circulation can be
  mapped to forces without re-running the nonlinear gamma solve (#245)
• calculate_cd and calculate_cm, splitting the combined calculate_cd_cm
  into separate drag- and moment-coefficient functions; calculate_cd_cm is
  kept as a thin wrapper (#246)

Changed

• calc_forces! is now allocation-free in the per-step hot path
  (preallocated panel_area_dist and unrefined_count_dist buffers) (#245)

Fixed

• 3D polar plotting (#245)
• flaky Aqua persistent_tasks test now actually disabled via
  persistent_tasks=false (() did not disable it) (#246)

Merged pull requests:

• Split calc_forces! out of solve! and make it zero-alloc (#245) (@1-Bart-1)
• Split cd and cm (#246) (@1-Bart-1)

v3.3.5

VortexStepMethod v3.3.5

Diff since v3.3.4

Added

• moment_coeff_unrefined_dist field in VSMSolution: the summed
  moment_frac-referenced pitching-moment coefficient per unrefined section [-]

Merged pull requests:

• Add dist (#244) (@1-Bart-1)

v3.3.4

VortexStepMethod v3.3.4

Diff since v3.3.3

Added

• PlotBackend, MakieBackend, ControlPlotsBackend, and
  set_plot_backend! so applications can explicitly choose which plotting
  extension the backend-agnostic plotting API should use
• PythonCall added as a weak dependency to support the ControlPlots
  backend with PythonPlot

Changed

• backend-agnostic plotting wrappers now route through the active plotting
  backend, and each plotting extension initializes itself as the default only
  when no backend has been selected yet
• relaxed ControlPlots compatibility to include both 0.2.5 and 0.3
• improved bin/install and bin/install_controlplots scripts

Fixed

• corrected projection onto core radius in velocity_3D_bound_vortex! and
  semi-infinite trailing vortex projection so that the radial direction is
  always measured from the filament axis, not from the origin (#241)
• fixed 0-based subplot indexing in ControlPlotsExt for PythonPlot
  compatibility (plot_distribution no longer errors with PythonPlot backend)
• fixed missing initialization of damp in solver.jl

Merged pull requests:

• Fix branch 3 direction (#241) (@1-Bart-1)
• Allow ControlPlots 0.3 (#242) (@ufechner7)

v3.3.3

VortexStepMethod v3.3.3

Diff since v3.3.2

Fixed

• MakieExt and ControlPlotsExt no longer both define
  VortexStepMethod.plot_geometry for the same type, resolving a method
  ambiguity when both extensions were loaded (#236)
• menu() and menu_cp() now always set the active backend before dispatching
  to a plot function, preventing stale-backend errors

Merged pull requests:

• Fix MakieExt and ControlPlotsExt define VortexStepMethod.plot_geometry for the same type (#237) (@ufechner7)

Closed issues:

• MakieExt and ControlPlotsExt define VortexStepMethod.plot_geometry for the same type (#236)

v3.3.2

VortexStepMethod v3.3.2

Diff since v3.3.1

Changed

• use 2-arg version of atan to avoid possible NaN

v3.3.1

VortexStepMethod v3.3.1

Diff since v3.3.0

Changed

• unrefined_deform! linearly interpolates twist and TE deflection between
  unrefined sections and rotates each refined section about the average of its
  adjacent local airfoil normals (#234)

Fixed

• smooth_sqrt in the solver hot loop keeps gradients defined at zero
  velocity magnitude

Merged pull requests:

• Improve deform: linear interpolation for twist and average local airfoil normal (#234) (@1-Bart-1)

v3.3.0

VortexStepMethod v3.3.0

Diff since v3.2.0

Added

• ForwardDiff compatibility, used by default in linearize (#232)
• backend keyword argument for linearize
• example linearize_check.jl comparing FiniteDiff and ForwardDiff tangents

Changed

• core structs are parameterized on the scalar type T so dual numbers can
  propagate through them; public constructors are unchanged

Merged pull requests:

• Add forwarddiff compatibility and use it for linearisation (#232) (@1-Bart-1)
• Add constructor without type (#233) (@1-Bart-1)

v3.2.0

VortexStepMethod v3.2.0

Diff since v3.1.3

Added

• support for both CairoMakie and GLMakie in the example menu() via new
  CairoMakie.activate() / GLMakie.activate() entries (#222)
• plots are saved as PDF when CairoMakie is active
• bin/install now creates the output folder used by examples to store
  generated plots

Changed

• examples write plots into the shared output folder instead of the working
  directory
• example plot file names are sanitized: spaces replaced with _ and %
  replaced with pct

Fixed

• NONLIN solver no longer returns stale gamma on repeated solve! calls
  (#228)

Merged pull requests:

• Allow using CairoMakie or GLMakie using the menu() (#222) (@ufechner7)
• Fix NONLIN solver returning stale gamma on repeat solve! calls (#228) (@1-Bart-1)
• Bump julia-actions/setup-julia from 2 to 3 (#229) (@dependabot[bot])
• Bump codecov/codecov-action from 5 to 6 (#230) (@dependabot[bot])

Closed issues:

• Bug in untested branch causes SymbolicAWEModels.jl to fail (#226)

v3.1.3

VortexStepMethod v3.1.3

Diff since v3.1.2

### Fixed
- bug in `linearize` where `body_aero.va` was used instead of `body_aero._va`,
  causing incorrect initial velocity storage (#227)
- `set_va!` no longer overwrites `_va` with a computed reference velocity when
  omega is nonzero; this simplifies the function and fixes linearization with
  turn rates
- linearize now correctly preserves and restores `omega` across perturbations

Merged pull requests:

• Fix bug in untested linearize branch (#227) (@1-Bart-1)

v3.1.2

VortexStepMethod v3.1.2

Diff since v3.1.1

### Added
- add back compat entry v2 for SciMLBase