RadialGridLayoutGroup

RadialGridLayoutGroup is a custom Unity layout group that arranges UI elements in a radial pattern. It extends GridLayoutGroup to provide flexible and visually appealing radial layouts, supporting circular, spiral, and parabolic shapes.

Features

• Radial Layouts: Arrange elements in circular, spiral, or parabolic patterns.
• Customizable Settings: Adjust rotation, offsets, distance, and angular constraints.
• Flexible Alignment: Align child elements from left to right or right to left.
• Editor Visualization: Visualize radial layouts in the Unity editor using Gizmos.

Enum Types

ChildAlignmentOrder

Defines the order of child alignment.

• Left_Right
• Right_Left

RadialShape

Defines the shape of the radial layout.

• Circular
• Spiral
• Parabolic

Serialized Fields

• m_RotateY: Rotation angle around the Y-axis.
• m_RotateZ: Rotation angle around the Z-axis.
• m_CircularOffsetX: Horizontal offset for circular layouts.
• m_CircularOffsetY: Vertical offset for circular layouts.
• m_IgnoreCellsize: Ignore the cell size setting if true.
• m_fDistance: Distance factor for element positioning.
• m_RadialShape: Shape of the radial layout (Circular, Spiral, Parabolic).
• m_ChildAlignmentOrder: Order of child alignment (Left_Right, Right_Left).
• m_CirclelRadiusMultiplier: Multiplier for the circle's radius.
• m_MinAngle: Minimum angle for the radial layout.
• m_MaxAngle: Maximum angle for the radial layout.
• m_StartAngle: Start angle for the radial layout.
• m_ElementCount: Number of elements in the layout.

Methods

OnEnable()

Caches active child transforms and calculates the radial layout when the component is enabled.

CacheActiveChildTransforms()

Clears and repopulates the list of active child RectTransforms.

CalculateRadial()

Computes the positions of child elements based on the radial shape and alignment settings.

CalculateCircumferenceWithShape(Vector2 totalSize, int currentRow, int currentCol)

Calculates the circumference of the layout for different shapes.

ApplyChildAlignment(ref Vector2 pivotOffset)

Adjusts the pivot offset based on the specified child alignment.

OnDrawGizmos()

Draws Gizmos in the editor to visualize the radial layout based on MinAngle, MaxAngle, and StartAngle.

Usage

To use the RadialGridLayoutGroup in your Unity project:

1. Attach the RadialGridLayoutGroup script to a GameObject containing a RectTransform.
2. Customize the serialized fields in the Unity inspector to achieve the desired radial layout.
3. Add child elements to the GameObject and observe the radial arrangement.

[Radial Grid Layout Inspector]