GlowOrb class

A positionable glowing orb with optional bouncing animation.

Renders a volumetric glowing sphere that can be positioned freely or set to bounce off the container edges automatically.

The shader creates a bright center core with soft exponential falloff, a halo glow, subtle internal light variation (noise caustics), and a breathing pulse animation. The background is transparent for compositing.

Static positioned orb:

GlowOrb(
  position: Offset(0.5, 0.5), // center
  color: Colors.cyan,
  radius: 0.15,
)

Bouncing orb (screensaver style):

GlowOrb.bouncing(
  color: Colors.purple,
  radius: 0.1,
  speed: 0.3,
)
Inheritance

Constructors

GlowOrb({Key? key, Offset position = const Offset(0.5, 0.5), Color color = Colors.cyan, double radius = _defaultRadius, double glowIntensity = _defaultGlowIntensity, double pulseSpeed = _defaultPulseSpeed, bool enabled = true, Widget? child})
Creates a statically positioned glowing orb.
const
GlowOrb.bouncing({Key? key, Color color = Colors.purple, double radius = _defaultRadius, double glowIntensity = _defaultGlowIntensity, double pulseSpeed = _defaultPulseSpeed, bool enabled = true, Widget? child, double speed = _defaultBounceSpeed})
Creates a glowing orb that bounces off the container edges.
const
GlowOrb.draggable({Key? key, Offset position = const Offset(0.5, 0.5), Color color = Colors.orange, double radius = _defaultRadius, double glowIntensity = _defaultGlowIntensity, double pulseSpeed = _defaultPulseSpeed, bool enabled = true, Widget? child})
Creates a glowing orb that can be dragged around by the user.
const

Properties

child → Widget?
Optional child widget rendered behind the shader effect.
final
color → Color
Color of the orb glow. The shader blends toward white at the core.
final
enabled → bool
Whether the shader effect is active. When false, only child renders.
final
glowIntensity → double
Brightness multiplier. 1.0 is the default intensity.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
position → Offset
Normalized position of the orb center (0-1 on both axes).
final
pulseSpeed → double
Speed of the breathing/pulsing animation in radians per second.
final
radius → double
Radius of the orb as a fraction of the widget dimension.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited