editor › Globals › RasterizedPolygon

Class: RasterizedPolygon

Stores the rasterized version of a polygon. It can be used to estimate the area or distance to a polygon in 2D space. However it does not know about connected components and treats all true pixels as one polygon.

Hierarchy

• RasterizedPolygon

Implements

• Iterable‹object›

Index

Constructors

• constructor

Properties

• aabb
• rasterization

Methods

• [Symbol.iterator]
• _getPixelSize
• _indexToCenter
• distanceToPoint
• fromPolygon
• getArea
• getFilledPixelPositionsAabb
• getFullAabb
• getRasterization
• getResolution

Constructors

constructor

+ new RasterizedPolygon(aabb?: AABB, rasterization?: boolean[][]): RasterizedPolygon

Defined in src/util/polygon/RasterizedPolygon.ts:11

Parameters:

Name	Type
aabb?	AABB
rasterization?	boolean[][]

Returns: RasterizedPolygon

Properties

Private aabb

• aabb: AABB

Defined in src/util/polygon/RasterizedPolygon.ts:10

---

Private rasterization

• rasterization: boolean[][]

Defined in src/util/polygon/RasterizedPolygon.ts:11

Methods

[Symbol.iterator]

▸ [Symbol.iterator](): Iterator‹object›

Defined in src/util/polygon/RasterizedPolygon.ts:116

Returns: Iterator‹object›

---

Private _getPixelSize

▸ _getPixelSize(): Vector2

Defined in src/util/polygon/RasterizedPolygon.ts:148

Returns: Vector2

---

Private _indexToCenter

▸ _indexToCenter(x: number, y: number): Vector2

Defined in src/util/polygon/RasterizedPolygon.ts:138

Parameters:

Name	Type
x	number
y	number

Returns: Vector2

---

distanceToPoint

▸ distanceToPoint(point: Vector2): number

Defined in src/util/polygon/RasterizedPolygon.ts:101

Parameters:

Name	Type
point	Vector2

Returns: number

---

fromPolygon

▸ fromPolygon(polygon: Polygon, pixelBudget: number, aabb: AABB‹›): this

Defined in src/util/polygon/RasterizedPolygon.ts:26

Rasterizes a polygon into a maximum of pixelBudget pixels Runtime complexity: O(pixelBudget * poly.length) If there were no true pixels found, null is returned.

Parameters:

Name	Type	Default	Description
polygon	Polygon	-	-
pixelBudget	number	100	-
aabb	AABB‹›	polygon.getAABB()	-

Returns: this

---

getArea

▸ getArea(): number

Defined in src/util/polygon/RasterizedPolygon.ts:87

Returns: number

---

getFilledPixelPositionsAabb

▸ getFilledPixelPositionsAabb(): AABB

Defined in src/util/polygon/RasterizedPolygon.ts:69

Returns an AABB of the filled pixels' positions

Returns: AABB

---

getFullAabb

▸ getFullAabb(): AABB

Defined in src/util/polygon/RasterizedPolygon.ts:62

Returns: AABB

---

getRasterization

▸ getRasterization(): boolean[][]

Defined in src/util/polygon/RasterizedPolygon.ts:83

Returns: boolean[][]

---

getResolution

▸ getResolution(): Vector2

Defined in src/util/polygon/RasterizedPolygon.ts:97

Returns: Vector2