BMatesNode
Node is the most basic graphics class in Renderer.
All objects that contain basic functions and have no children belong to Node.
Check Container and Group for objects that act like Node and have children.
Properties
name: string
The name of the Node. The default value is Node.
x: number
The x-coordinate of the Node.
y: number
The y-coordinate of the Node.
width: number
The width of the Node.
height: number
The height of the Node.
parent: Container | null
Parent container with Node as a child.
Default value is null.
Automatically assigned through add().
For Stage, the top node, it is a null value.
visible: boolean
The visibility state of the Node.
draggable: boolean
Indicates whether the Node is draggable.
zIndex: number
The z-index of the Node.
They are reordered compared to other Nodes at the same level.
Constructor
constructor (attrs: Partial<NodeAttributes> = {})
attrs: Partial<NodeAttributes>
Sets the initial properties of the Node.
Methods
update (dT)
Updates the state of the Node.
| Name | Type | Description |
|---|---|---|
| dT | number | Delta time |
Called before draw().
draw (ctx)
Draws the Node.
| Name | Type | Description |
|---|---|---|
| ctx | CanvasRenderingContext2D | Rendering context for the drawing surface |
Called after update().
isIntersection (x, y)
Checks if the given coordinates intersect with the Node.
| Name | Type | Description |
|---|---|---|
| x | number | The x-coordinate to check for intersection. |
| y | number | The y-coordinate to check for intersection. |
- Return:
boolean
hitTest (point, e)
Checks if the given point collides with the Node.
| Name | Type | Description |
|---|---|---|
| point | Vector2 | The point to check for collision. |
| e | MouseEvent | The mouse event associated with the hit test. |
- Return:
Node | null- The Node if a collision occurs, otherwise
null.
- The Node if a collision occurs, otherwise
getStage ()
- Return:
Stage | null
toObject ()
Extract key attribute data.
- Return:
object
destroy ()
Safely removes the Node.