Polygon

polygon.ts#L18

Class Polygon

A polygon defined by its vertex points.

Implements GeoShape

constructor (points: Array<Point>): Polygon

Name	Type	Default	Description
points	Array<Point>

polygon.ts#L20

readonly Property .points

polygon.ts#L19

readonly Property .type : string

Default value: 'polygon'

polygon.ts#L51

Accessor .area : number

polygon.ts#L55

Accessor .centroid : Point

polygon.ts#L26

Accessor .circumference : number

polygon.ts#L68

Accessor .edges

polygon.ts#L84

Accessor .oriented : this

The oriented version of this polygon (vertices in clockwise order).

polygon.ts#L77

Accessor .radius : number

polygon.ts#L39

Accessor .signedArea : number

The (signed) area of this polygon. The result is positive if the vertices are ordered clockwise, and negative otherwise.

polygon.ts#L196

Method .at (t: number): Point

Name	Type	Default	Description
t	number

polygon.ts#L225

Method .centerAt (on: Point): Polygon

Center this polygon on a given point or the origin

Name	Type	Default	Description
on	Point	…

polygon.ts#L181

Method .contains (p: Point): boolean

Checks if a point p lies inside this polygon, by using a ray-casting algorithm and calculating the number of intersections.

Name	Type	Default	Description
p	Point

polygon.ts#L91

Method .cut (line: Line): Array<Polygon>

Cut this polygon along a line, and return multiple parts.

Name	Type	Default	Description
line	Line

polygon.ts#L261

Method .equals (other: Polygon, tolerance: number, oriented: boolean): boolean

Name	Type	Default	Description
other	Polygon
tolerance	number
oriented	boolean

polygon.ts#L208

Method .offset (p: Point): number

Name	Type	Default	Description
p	Point

polygon.ts#L219

Method .project (p: Point): Point

Name	Type	Default	Description
p	Point

polygon.ts#L242

Method .reflect (line: Line): Polygon

Name	Type	Default	Description
line	Line

polygon.ts#L236

Method .rotate (a: number, center: Point): Polygon

Rotates this polygon by a given angle (in radians), optionally around point center.

Name	Type	Default	Description
a	number
center	Point	…

polygon.ts#L247

Method .scale (sx: number, sy: number): Polygon

Name	Type	Default	Description
sx	number
sy	number	…

polygon.ts#L252

Method .shift (x: number, y: number): Polygon

Name	Type	Default	Description
x	number
y	number	…

polygon.ts#L277

Method .toString (): string

polygon.ts#L231

Method .transform (m: TransformMatrix): Polygon

Name	Type	Default	Description
m	TransformMatrix

polygon.ts#L257

Method .translate (p: SimplePoint): Polygon

Name	Type	Default	Description
p	SimplePoint

polygon.ts#L105

static Method .collision (p1: Polygon, p2: Polygon): boolean

Checks if two polygons p1 and p2 collide.

Name	Type	Default	Description
p1	Polygon
p2	Polygon

polygon.ts#L146

static Method .convexHull (points: Array<Point>): Polygon

Name	Type	Default	Description
points	Array<Point>

polygon.ts#L139

static Method .interpolate (p1: Polygon, p2: Polygon, t: number): Polygon

Interpolates the points of two polygons

Name	Type	Default	Description
p1	Polygon
p2	Polygon
t	number	0.5

polygon.ts#L130

static Method .regular (n: number, radius: number): Polygon

Creates a regular polygon.

Name	Type	Default	Description
n	number
radius	number	1

polygon.ts#L120

static Method .union (polygons: Array<Polygon>): Array<Polygon>

Name	Type	Default	Description
polygons	Array<Polygon>

polygon.ts#L284

Class Polyline

A polyline defined by its vertex points.

Extends Polygon

polygon.ts#L285

readonly Property .type

Default value: 'polyline'

polygon.ts#L291

Accessor .length : number

polygon.ts#L308

Method .toString (): string

polygon.ts#L315

Class Triangle

A triangle defined by its three vertices.

Extends Polygon

polygon.ts#L316

readonly Property .type

Default value: 'triangle'

polygon.ts#L318

Accessor .circumcircle

polygon.ts#L338

Accessor .incircle

polygon.ts#L353

Accessor .orthocenter : Point