Hotfix 4.2.1: Fix a regression where sometimes child sizes don't update from this performance fix.

Version 4.2.0

Features

New option Flexalon.SkipInactiveObjects will cause all inactive gameObjects in the scene to be skipped in layouts. This is the same as enabling FlexalonObject.SkipLayout on individual objects. This option is enabled by default.
Adding max size to a FlexalonFlexibleLayout can now cause it to wrap.

Fixes

Performance: Avoid third layout pass when possible when using Fill size type on children.
Performance: Make Directions struct immutable.
Performance: Improve how Flexalon checks for the existance of FlexalonObject.
Performance: Reduce garbage collection allocations by replacing foreach loops with for loops.
Interactable: Fix how overlaps are calculated for drag targets with a non-center RectTransform pivot.
Fix SkipLayout not working correctly for children in a FlexalonGridLayout.
Fix TextMeshPro adapters not loading in Unity 2022.3 and Unity 6.
Fix Flexalon adapters not working when a new gameObject is added to a layout in a script before another component is added like a mesh, image, or text.
Fix how FlexalonConstraint computes fill sizes when the target is scaled.
Fix max fill size not working on root layouts with RectTransform parents.
Fix Unity 6 deprecation warnings.

Version 4.1.2

Ensure FlexalonObject parameters are read even if the gameObject is inactive.
Support additive scenes by allowing multiple Flexalon singletons to be in the scene. Only one will be used.
Use RequireComponent to add FlexalonObject to layouts instead of adding it in OnEnable. This fixes some issues with Undo/Redo.
Fix a destroyed FlexalonResult being accessed on redo.
Fix NaN that can happen when assigning zero fill size.
Fix an exception when leaving prefab mode on some versions of Unity.
Fix an occasional exception on deserializing a grid layout.
Fix an error that occurs if a Flexalon Interactables with a UI component is instantiated without a Canvas parent.
Support canvases inside canvases by treating them as RectTransforms.
Fix Flexalon Animators on children of a layout freezing when that layout is dragged by a Flexalon Interactable.

Version 4.1.1

Avoid Flexalon changing transforms during undo/redo events.
Avoid updating layout of objects that are being dragged.
Fix how Flexible Layout gap affects the shrinking of children.
Correctly serialize FlexalonLerpAnimator._animateInWorldSpace.
Tweak the FlexalonInteractable insertion algorithm to detect overlaps using the cursor position instead of the object's current animating box position.
Fix sample ImageAdapter.

Version 4.1.0

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Support for min and max sizes, and improved Flexible Layout!

Features

Flexalon Object has new fields for min and max. Values can be a fixed number or a percent of the parent.
All built-in adapters and layouts updated to support min and max.
Flexible Layout will now shrink objects which have not hit their min size using a similar algorihtm to Flexbox.
Flexalon Object has new "Skip Layout" field. If set, the gameObject will be skipped by the parent layout.

Changes

FlexalonAdapter and FlexalonLayout interface methods now take min and max parameters.
Flexalon Object no longer auto-computes the offset, rotation, and scale when the transform is edited. This allows more consistent behavior when working with instantiated prefabs.

Fixes

Allow pivot and anchor to be set on root objects which are not controlled by a layout or constraint. This allows ScrollRect to position Flexalon layouts properly.
Fix warnings when user does Undo after a Flexalon component is automatically added.
Fix exception if TextMeshPro is missing a font asset.
Fix exception is Image component is sprite asset.

Version 4.0.0

You can now use Flexalon to build UI under a Canvas, animate your layouts, and add click/drag interactions.

Coming soon, Flexalon UI Copilot will let you use natural language conversation with an AI to build your UI automatically. Learn more at flexalon.com/ai.
PLEASE NOTE: If updating from an older version, this update includes changes that may require you to update your code. As always, save a copy of your assets before updating. See Notable Changes below.

New UI Features

Use all Flexalon layouts, constraints, and modifiers to position your content.
Animate your UI with Lerp and Curve Animators.
Create click and drag interactions with Flexalon Interactables.
Bind data to your UI with Flexalon Cloner.
New UI samples scenes under Flexalon/Samples/Scenes/UI
See all the details at: flexalon.com/docs/ui

New Layout Features

Flexible Layout: New "Gap Type" property lets you space objects evenly to fill the layout.
Circle Layout: New "Plane" parameter
Lerp Animator & Curve Animator: New "Animate in World Space" checkbox. When checked (default), animations are based on the global coordinates. When unchecked, animations are based on the object's parent coordinates, which is useful if you're animating both the parent and the child and want them to stay together.

Notable Changes

For all of the following changes, your assets will be automatically patched, but you may need to update your code to accommodate new property names, values, or renaming.
Adapter interface has changed. UpdateSize has been replaced with TryGetScale and TryGetRectSize to support animating rect size and to avoid setting scale and rect size when they are handled by external components.
Interactable.Collider has been replaced with Interactable.Handle, which supports UI components.
FlexalonCircleLayout.VerticalAlign has been renamed to FlexalonCircleLayout.PlaneAlign to support the new "Plane" parameter.
FlexalonCircleLayout.UseWidth has been replaced with FlexalonCircleLayout.InitialRadiusOption to support the new "Plane" parameter.
FlexalonCircleLayout "In" and "Out" rotations have been flipped. "Backwards" has been renamed to "Backward".
World space canvas with fill size will no longer scale to fit into the layout. The rect transform size will now be adjusted to fit into the layout.

Fixes and Changes

Fixed a bug in nesting Flexible layouts with size type Fill.
Flexalon Oculus Input Provider, which enables input handling for VR applications, now supports objects with multiple interactables.
Fixed floating point errors causing Flexible Layout to wrap when it shouldn't.
Setting Flexalon Object size to fill and also assigning a scale now computes the fill size correctly.
Added some helper properties to the Directions class.
GameObjects with Flexalon Constraints can now be placed under a layout - they will be skipped in the layout step.
Fixed an interactable bug where a drag could start if the mouse is held down and dragged over an object.

Version 3.2.2

Updated folder organization to support separate layout packages.
Improved grid layout sample scene.

Version 3.2.1 (Hotfix)

Fixed Interactable custom editor not appearing correctly.
Fixed Flexalon Draggable Max Objects property not working correctly.
Fixed version checking to show the start screen on update.

Version 3.2.0 "The XR Update"

Added support for VR interactions with integration for XR Interaction Toolkit and Oculus Interaction SDK.

New Features:

New 'Flexalon XR Input Provider' allows Flexalon Interactables to be used with interactables from XR Interaction Toolkit.
New 'Flexalon Oculus Input Provider' allows Flexalon Interactables to be used with interactables from Oculus Interaction SDK.
New 'Insert Radius' property for Flexalon Interactable allows you to specify how close a dragged object needs to be to a layout before it is inserted.

Fixes and Changes:

Flexalon Drag Target no longer creates a collider on itself. This prevents it from interfering with physics interactions. Instead, it uses a custom overlap detection function with the new Insert Radius property of Flexalon Interactable.
Flexalon Interactable's generated placeholder no longer has a box collider for the same reason.
If a Flexalon Interactable is dragged into two drag targets at once, it will now select the one with the nearest child.
Flexalon Interactable local space restrictions no longer change to world space when leaving a drag target. This was causing objects to jump when leaving a drag target in some scenarios. Instead, the interactable continues to use the last drag target's local space until a new drag target is detected.
Fixed a bug in which layouts were not always recomputed correctly when adding children from another layout.
Fixed a bug in which layouts were not always recomputed correctly when a child without a Flexalon Component was deleted.
Fixed a bug in which a Flexalon Object's offset would sometimes change unexpectedly.
The Flexalon Result hidden component will no longer appear when a prefab is selected in the asset browser.
The Game Object > Flexalon context menu will now add new layouts under the right-clicked gameObject.

Flexalon Pro: 3D & UI Layouts