Class PolygonBody

Hierarchy

  • Polygon
    • PolygonBody

Implements

Constructors

constructor

Properties

angle bbox calcPoints centered convexPolygons destroy$ dirty edges gameObject isConvex isStatic isTrigger label maxX maxY minX minY normals offset padding points pointsBackup pos scaleVector system? type update$

Accessors

isCentered scale scaleX scaleY x y

Methods

destroy draw drawBVH getAABB getAABBAsBBox getCentroid getCentroidWithoutRotation getConvex isSimple markAsDirty retranslate rotate setAngle setOffset setPoints setPosition setScale translate update updateBody updateConvexPolygonPositions updateConvexPolygons updateIsConvex

Constructors

constructor

Properties

angle

angle: number

bbox

bbox: BBox

bounding box cache, without padding

calcPoints

calcPoints: Vector[]

Protected centered

centered: boolean

is body centered

convexPolygons

convexPolygons: Polygon[]

optimization for convex polygons

Readonly destroy$

destroy$: Subject<void> = ...

When Lifecycle Object is destroyed, it emits and closes this subject. Along with destroying his children, which in turn behave the same.

dirty

dirty: boolean

was the polygon modified and needs update in the next checkCollision

edges

edges: Vector[]

Readonly gameObject

gameObject: GameObject

Parent GameObject is assigned at creation.

isConvex

isConvex: boolean

is it a convex polgyon as opposed to a hollow inside (concave) polygon

isStatic

isStatic: boolean

static bodies don't move but they collide

isTrigger

isTrigger: boolean

trigger bodies move but are like ghosts

label

label: string = 'PolygonBody'

Each Lifecycle Object has label for pixi debugging.

maxX

maxX: number

maximum x bound of body

maxY

maxY: number

maximum y bound of body

minX

minX: number

minimum x bound of body

minY

minY: number

minimum y bound of body

normals

normals: Vector[]

offset

offset: Vector

padding

padding: number

bodies are not reinserted during update if their bbox didnt move outside bbox + padding

points

points: Vector[]

Protected pointsBackup

pointsBackup: Vector[]

backup of points used for scaling

pos

pos: Vector

Protected Readonly scaleVector

scaleVector: Vector

scale Vector of body

Optional system

system?: System<Body>

reference to collision system

Readonly type

type: Ellipse | Line | Box | Point | Polygon

type of body

Readonly update$

update$: Subject<number> = ...

When Lifecycle Object is updated, it emits this subject. Along with updating his children, which in turn behave the same.

Accessors

isCentered

  • get isCentered(): boolean

  • is polygon centered?

    Returns boolean

  • set isCentered(isCentered): void

  • flag to set is polygon centered

    Parameters

    • isCentered: boolean

    Returns void

scale

  • get scale(): number

  • allow approx getting of scale

    Returns number

  • set scale(scale): void

  • allow easier setting of scale

    Parameters

    • scale: number

    Returns void

scaleX

  • get scaleX(): number

  • allow exact getting of scale x - use setScale(x, y) to set

    Returns number

scaleY

  • get scaleY(): number

  • allow exact getting of scale y - use setScale(x, y) to set

    Returns number

x

  • get x(): number

  • Returns number

  • set x(x): void

  • updating this.pos.x by this.x = x updates AABB

    Parameters

    • x: number

    Returns void

y

  • get y(): number

  • Returns number

  • set y(y): void

  • updating this.pos.y by this.y = y updates AABB

    Parameters

    • y: number

    Returns void

Methods

destroy

draw

  • draw(context): void

  • Draws exact collider on canvas context

    Parameters

    • context: CanvasRenderingContext2D

    Returns void

drawBVH

  • drawBVH(context): void

  • Draws Bounding Box on canvas context

    Parameters

    • context: CanvasRenderingContext2D

    Returns void

getAABB

  • getAABB(): Polygon

  • Returns Polygon

getAABBAsBBox

  • getAABBAsBBox(): BBox

  • get body bounding box, without padding

    Returns BBox

getCentroid

  • getCentroid(): Vector

  • Returns Vector

getCentroidWithoutRotation

  • getCentroidWithoutRotation(): Vector

  • get body centroid without applied angle

    Returns Vector

Protected getConvex

  • getConvex(): Polygon[]

  • returns body split into convex polygons, or empty array for convex bodies

    Returns Polygon[]

isSimple

  • isSimple(): boolean

  • if true, polygon is not an invalid, self-crossing polygon

    Returns boolean

Protected markAsDirty

  • markAsDirty(update?): void

  • update instantly or mark as dirty

    Parameters

    • Optional update: boolean

    Returns void

Protected retranslate

  • retranslate(isCentered?): void

  • Parameters

    • Optional isCentered: boolean

    Returns void

rotate

  • rotate(angle): Polygon

  • rotates polygon points by angle, in radians

    Parameters

    • angle: number

    Returns Polygon

setAngle

  • setAngle(angle, update?): Polygon

  • Parameters

    • angle: number
    • Optional update: boolean

    Returns Polygon

setOffset

  • setOffset(offset, update?): Polygon

  • Parameters

    • offset: Vector
    • Optional update: boolean

    Returns Polygon

setPoints

  • setPoints(points): Polygon

  • sets polygon points to new array of vectors

    Parameters

    • points: Vector[]

    Returns Polygon

setPosition

  • setPosition(x, y, update?): Polygon

  • update position

    Parameters

    • x: number
    • y: number
    • Optional update: boolean

    Returns Polygon

setScale

  • setScale(x, y?, update?): Polygon

  • update scale

    Parameters

    • x: number
    • Optional y: number
    • Optional update: boolean

    Returns Polygon

translate

  • translate(x, y): Polygon

  • translates polygon points in x, y direction

    Parameters

    • x: number
    • y: number

    Returns Polygon

update

updateBody

  • updateBody(update?): void

  • inner function for after position change update aabb in system and convex inner polygons

    Parameters

    • Optional update: boolean

    Returns void

Protected updateConvexPolygonPositions

  • updateConvexPolygonPositions(): void

  • update the position of the decomposed convex polygons (if any), called after the position of the body has changed

    Returns void

Protected updateConvexPolygons

  • updateConvexPolygons(convex?): void

  • updates convex polygons cache in body

    Parameters

    • Optional convex: Polygon[]

    Returns void

Protected updateIsConvex

  • updateIsConvex(): void

  • after points update set is convex

    Returns void

Settings

Member Visibility

Theme

On This Page

constructor angle bbox calcPoints centered convexPolygons destroy$ dirty edges gameObject isConvex isStatic isTrigger label maxX maxY minX minY normals offset padding points pointsBackup pos scaleVector system type update$ isCentered scale scaleX scaleY x y destroy draw drawBVH getAABB getAABBAsBBox getCentroid getCentroidWithoutRotation getConvex isSimple markAsDirty retranslate rotate setAngle setOffset setPoints setPosition setScale translate update updateBody updateConvexPolygonPositions updateConvexPolygons updateIsConvex