ChildVicinity class
The relative position of a child in a TwoDimensionalViewport in relation to other children of the viewport.
While children can be plotted arbitrarily in two dimensional space, the ChildVicinity is used to disambiguate their positions, determining how to traverse the children of the space.
Combined with the RenderTwoDimensionalViewport.mainAxis, each child's vicinity determines its paint order among all of the children.
- Implemented types
- Annotations
Constructors
- ChildVicinity({required int xIndex, required int yIndex})
-
Creates a reference to a child in a two dimensional plane, with the
xIndexandyIndexbeing relative to other children in the viewport.const
Properties
- hashCode → int
-
The hash code for this object.
no setteroverride
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- xIndex → int
-
The index of the child in the horizontal axis, relative to neighboring
children.
final
- yIndex → int
-
The index of the child in the vertical axis, relative to neighboring
children.
final
Methods
-
compareTo(
ChildVicinity other) → int -
Compares this object to another object.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override
Constants
- invalid → const ChildVicinity
- Represents an unassigned child position. The given child may be in the process of moving from one position to another.