editor › Globals › TriangleMesh2D

Class: TriangleMesh2D

Holds a mesh consisting out of multiple triangles that are in the z=0 plane

Hierarchy

• TriangleMesh2D

Index

Constructors

• constructor

Properties

• triangleAddEventEmitter
• triangleRemoveEventEmitter
• triangles

Methods

• addTriangle
• concat
• divideSide
• getIterator
• getTriangleAddEventEmitter
• getTriangleRemoveEventEmitter
• getTriangles
• performSanityCheck
• removeTriangle
• replacePointInstance
• replaceTriangles
• tripleDivide

Constructors

constructor

+ new TriangleMesh2D(triangles: Triangle[]): TriangleMesh2D

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:15

Parameters:

Name	Type
triangles	Triangle[]

Returns: TriangleMesh2D

Properties

Private Readonly triangleAddEventEmitter

• triangleAddEventEmitter: EventEmitter‹Triangle‹›› = new EventEmitter()

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:14

---

Private Readonly triangleRemoveEventEmitter

• triangleRemoveEventEmitter: EventEmitter‹Triangle‹›› = new EventEmitter()

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:15

---

Private Readonly triangles

• triangles: Set‹Triangle›

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:12

Methods

addTriangle

▸ addTriangle(triangle: Triangle): void

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:31

Parameters:

Name	Type
triangle	Triangle

Returns: void

---

concat

▸ concat(otherMesh: TriangleMesh2D): TriangleMesh2D‹›

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:76

Parameters:

Name	Type
otherMesh	TriangleMesh2D

Returns: TriangleMesh2D‹›

---

divideSide

▸ divideSide(triangle: Triangle, sideCode: SideCode, divisionPoint: Vector3, isSecondSplit: boolean): object

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:150

Divides a triangle side by connecting the division point with the opposite point of the triangle, splitting up the triangle in two. If the split side has a neighboring triangle, this triangle wil be split as well to ensure consistency.

Parameters:

Name	Type	Default
triangle	Triangle	-
sideCode	SideCode	-
divisionPoint	Vector3	-
isSecondSplit	boolean	false

Returns: object

• array: [Triangle‹›, Triangle‹›] = [triangleLeft, triangleRight] as [Triangle, Triangle]

• triangleLeft: Triangle‹›

• triangleRight: Triangle‹›

---

getIterator

▸ getIterator(): TriangleMesh2DIterator‹›

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:52

Returns: TriangleMesh2DIterator‹›

---

getTriangleAddEventEmitter

▸ getTriangleAddEventEmitter(): IPublicEventEmitterInterface‹Triangle‹››

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:23

Returns: IPublicEventEmitterInterface‹Triangle‹››

---

getTriangleRemoveEventEmitter

▸ getTriangleRemoveEventEmitter(): IPublicEventEmitterInterface‹Triangle‹››

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:27

Returns: IPublicEventEmitterInterface‹Triangle‹››

---

getTriangles

▸ getTriangles(): Set‹Triangle‹››

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:48

Returns: Set‹Triangle‹››

---

performSanityCheck

▸ performSanityCheck(): object

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:87

Checks that there are (a) no degenerated triangles and (b) no neighbor triangle references that are not part of this mesh

Returns: object

object with boolean flags

• allChecksPass: boolean = false

• anyDegeneratedTriangles: boolean = false

• anyInvalidNeighbors: boolean = false

---

removeTriangle

▸ removeTriangle(triangle: Triangle): void

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:39

Parameters:

Name	Type
triangle	Triangle

Returns: void

---

replacePointInstance

▸ replacePointInstance(oldPoint: Vector3, newPoint: Vector3): Triangle‹›[]

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:60

Replaces oldPoint instance with newPoint

Parameters:

Name	Type
oldPoint	Vector3
newPoint	Vector3

Returns: Triangle‹›[]

Array of triangles that were modified by this operation

---

replaceTriangles

▸ replaceTriangles(oldTriangles: Triangle[], newTriangles: Triangle[]): void

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:201

Parameters:

Name	Type
oldTriangles	Triangle[]
newTriangles	Triangle[]

Returns: void

---

tripleDivide

▸ tripleDivide(triangle: Triangle, divisionPoint: Vector3): object

Defined in src/util/polygon/triangulatingClipper/TriangleMesh2D.ts:116

Divides a triangle into three smaller triangles separated by a point inside the triangle

Parameters:

Name	Type	Description
triangle	Triangle	-
divisionPoint	Vector3	-

Returns: object

the created triangles

• array: Triangle‹›[] = resultArray

• triAB: Triangle‹›

• triBC: Triangle‹›

• triCA: Triangle‹›