Class CirArc

Hierarchy

CirArc

Implements

Shape

Index

Constructors

constructor

Properties

Methods

Constructors

constructor

new CirArc(): CirArc
new CirArc(type: ArcType, x: number, y: number, r: number, sAngle: number, eAngle: number, dir?: 1 | 0): CirArc

Returns CirArc
Parameters
- type: ArcType
- x: number
- y: number
- r: number
- sAngle: number
- eAngle: number
- Optional dir: 1 | 0
Returns CirArc

Properties

dir

dir: 1 | 0

0 is counterclockwise; 1 is clockwise.

eAngle

eAngle: number

eAngle is the ending radian of the sector in coordinate system with (x,y) as the origin.

r

r: number

radius of the circle.

sAngle

sAngle: number

sAngle is the starting radian of the sector in coordinate system with (x,y) as the origin.

type

x

x: number

Centre point's X.

y

y: number

Centre point's Y.

Methods

_crossByRay

_crossByRay(rad: number): [number, number]

Parameters
- rad: number
Returns [number, number]

_inAngle

_inAngle(p: ArrayPoint2, ps: ArrayPoint2[], cache?: { minRad: number; realRad: number; va: Vector2; vb: Vector2 }): boolean

Parameters
- p: ArrayPoint2
- ps: ArrayPoint2[]
- Optional cache: { minRad: number; realRad: number; va: Vector2; vb: Vector2 }
  - minRad: number
  - realRad: number
  - va: Vector2
  - vb: Vector2
Returns boolean

angle

angle(): number

Returns the angle[0,360) in degree.

Returns number

arcLength

arcLength(): number

Returns number

area

area(): number

Returns number

bounds

bounds(): Rect

Implementation of Shape.bounds

Returns Rect

center

center(): ArrayPoint2
center(x: number, y: number): this

Returns ArrayPoint2
Parameters
- x: number
- y: number
Returns this

clone

clone(): this

Implementation of Shape.clone

Returns this

equals

equals(s: CirArc): boolean

Parameters
- s: CirArc
Returns boolean

inside

inside(s: ArrayPoint2 | Segment | Rect | Triangle): boolean

Parameters
- s: ArrayPoint2 | Segment | Rect | Triangle
Returns boolean

intersects

intersects(s: Segment | Line): boolean

Parameters
- s: Segment | Line
Returns boolean

isEmpty

isEmpty(): boolean

Implementation of Shape.isEmpty

Returns boolean

moveTo

moveTo(x: number, y: number): this

Parameters
- x: number
- y: number
Returns this

onside

onside(p: ArrayPoint2): boolean

Implementation of Shape.onside

Parameters
- p: ArrayPoint2
Returns boolean

perimeter

perimeter(): number

Implementation of Shape.perimeter

Returns a simple approximation value that is within about 5% of the true value (so long as a is not more than 3 times longer than b) .

Returns number

set

set(s: CirArc): this

Parameters
- s: CirArc
Returns this

vertexes

vertexes(): ArrayPoint2[]
vertexes(ps: ArrayPoint2[]): this

Implementation of Shape.vertexes

Returns ArrayPoint2[]
Implementation of Shape.vertexes

Parameters
- ps: ArrayPoint2[]
Returns this

Static toArc

toArc(type: ArcType, c: ArrayPoint2, r: number, sAngle: number, eAngle: number, dir?: 1 | 0): CirArc

Parameters
- type: ArcType
- c: ArrayPoint2
- r: number
- sAngle: number
- eAngle: number
- Default value dir: 1 | 0 = 1
Returns CirArc