Class Triangle

A geometric triangle as defined by three Vector3s representing its three corners.

Hierarchy

Base
- Triangle

Index

Constructors

constructor

new Triangle(a?: Vector3, b?: Vector3, c?: Vector3): Triangle
Creates a new Triangle.
Parameters
- Optional a: Vector3
  
  The first corner of the triangle. Default is a Vector3 at (0, 0, 0).
- Optional b: Vector3
  
  The second corner of the triangle. Default is a Vector3 at (0, 0, 0).
- Optional c: Vector3
  
  The third corner of the triangle. Default is a Vector3 at (0, 0, 0).
Returns Triangle
Overrides Base.constructor
- Defined in Triangle.d.ts:50

Properties

a

a: Vector3

The first corner of the triangle. Default is a Vector3 at (0, 0, 0).

b

b: Vector3

The second corner of the triangle. Default is a Vector3 at (0, 0, 0).

c

c: Vector3

The final corner of the triangle. Default is a Vector3 at (0, 0, 0).

Accessors

isBox2

get isBox2(): boolean
Returns boolean
Inherited from Base.isBox2
- Defined in Base.d.ts:2

isBox3

get isBox3(): boolean
Returns boolean
Inherited from Base.isBox3
- Defined in Base.d.ts:3

isColor

get isColor(): boolean
Returns boolean
Inherited from Base.isColor
- Defined in Base.d.ts:4

isCylindrical

get isCylindrical(): boolean
Returns boolean
Inherited from Base.isCylindrical
- Defined in Base.d.ts:5

isEuler

get isEuler(): boolean
Returns boolean
Inherited from Base.isEuler
- Defined in Base.d.ts:6

isLine3

get isLine3(): boolean
Returns boolean
Inherited from Base.isLine3
- Defined in Base.d.ts:7

isMatrix3

get isMatrix3(): boolean
Returns boolean
Inherited from Base.isMatrix3
- Defined in Base.d.ts:8

isMatrix4

get isMatrix4(): boolean
Returns boolean
Inherited from Base.isMatrix4
- Defined in Base.d.ts:9

isPlane

get isPlane(): boolean
Returns boolean
Inherited from Base.isPlane
- Defined in Base.d.ts:10

isQuaternion

get isQuaternion(): boolean
Returns boolean
Inherited from Base.isQuaternion
- Defined in Base.d.ts:11

isRay

get isRay(): boolean
Returns boolean
Inherited from Base.isRay
- Defined in Base.d.ts:12

isSphere

get isSphere(): boolean
Returns boolean
Inherited from Base.isSphere
- Defined in Base.d.ts:13

isSpherical

get isSpherical(): boolean
Returns boolean
Inherited from Base.isSpherical
- Defined in Base.d.ts:14

isTriangle

get isTriangle(): boolean
Read-only flag to check if a given object is of type Triangle.

Returns boolean
Overrides Base.isTriangle
- Defined in Triangle.d.ts:54

isVector2

get isVector2(): boolean
Returns boolean
Inherited from Base.isVector2
- Defined in Base.d.ts:16

isVector3

get isVector3(): boolean
Returns boolean
Inherited from Base.isVector3
- Defined in Base.d.ts:17

isVector4

get isVector4(): boolean
Returns boolean
Inherited from Base.isVector4
- Defined in Base.d.ts:18

Methods

clone

clone(): Triangle
Create a new triangle with the same a, b and c properties as this one.

Returns
A new Triangle instance equal to this triangle.

Returns Triangle
- Defined in Triangle.d.ts:77

closestPointToPoint

closestPointToPoint(pt: Vector3, target?: Vector3): Vector3
Returns the closest point on the triangle to point.

Algorithm thanks to Real-Time Collision Detection by Christer Ericson, published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc., under the accompanying license; see chapter 5.1.5 for detailed explanation. basically, we're distinguishing which of the voronoi regions of the triangle the point lies in with the minimum amount of redundant computation.
Returns
The closest point.
Parameters
- pt: Vector3
  
  Vector3 *
- Optional target: Vector3
  
  — (Optional) The result will be copied into this Vector3. *
Returns Vector3
- Defined in Triangle.d.ts:156

containsPoint

containsPoint(point: Vector3): boolean
Determine if a point, when projected onto the plane of the triangle, lies within the triangle.

Returns
True if the triangle contains the point.
Parameters
- point: Vector3
  
  Vector3 to check.
Returns boolean
- Defined in Triangle.d.ts:130

copy

copy(triangle: Triangle): Triangle
Copies the values of the passed triangles's a, b and c properties to this triangle.

Returns
This instance.
Parameters
- triangle: Triangle
  
  The source triangle.
Returns Triangle
- Defined in Triangle.d.ts:83

equals

equals(triangle: Triangle): boolean
Determing if the two triangles have identical a, b and c properties.

Returns
True if triangle has the same component values as this triangle.
Parameters
- triangle: Triangle
  
  The source triangle
Returns boolean
- Defined in Triangle.d.ts:162

getArea

getArea(): number
Copmute the area of the triangle.

Returns
The area of the triangle.

Returns number
- Defined in Triangle.d.ts:88

getBarycoord

getBarycoord(point: Vector3, target?: Vector3): Vector3
Compute a barycentric coordinate from the given vector.

Returns
The barycentric coordinate.
Parameters
- point: Vector3
  
  Vector3
- Optional target: Vector3
  
  (Optional) The result will be copied into this Vector3.
Returns Vector3
- Defined in Triangle.d.ts:113

getMidpoint

getMidpoint(target?: Vector3): Vector3
Calculate the midpoint of the triangle.

Returns
The midpoint.
Parameters
- Optional target: Vector3
  
  (Optional) The result will be copied into this Vector3.
Returns Vector3
- Defined in Triangle.d.ts:94

getNormal

getNormal(target?: Vector3): Vector3
Calculate the normal vector of the triangle.

Returns
The normal vector.
Parameters
- Optional target: Vector3
  
  (Optional) The result will be copied into this Vector3.
Returns Vector3
- Defined in Triangle.d.ts:100

getPlane

getPlane(target?: Plane): Plane
Calculate a plane based on the triangle. .

Returns
The plane.
Parameters
- Optional target: Plane
  
  (Optional) The result will be copied into this Plane.
Returns Plane
- Defined in Triangle.d.ts:106

getUV

getUV(point: Vector3, uv1: Vector2, uv2: Vector2, uv3: Vector2, target?: Vector2): Vector2
Compute the uv coordinates for the given point on the triangle.

Returns
The UV coordinate
Parameters
- point: Vector3
  
  The point on the triangle.
- uv1: Vector2
  
  The uv coordinate of the triangle's first vertex.
- uv2: Vector2
  
  The uv coordinate of the triangle's second vertex.
- uv3: Vector2
  
  The uv coordinate of the triangle's third vertex.
- Optional target: Vector2
  
  — (optional) The result will be copied into this Vector2
Returns Vector2
- Defined in Triangle.d.ts:123

intersectsBox

intersectsBox(box: Box3): boolean
Determines whether or not this triangle intersects box.

Returns
True if the box intersects this triangle.
Parameters
- box: Box3
  
  Box to check for intersection against.
Returns boolean
- Defined in Triangle.d.ts:142

isFrontFacing

isFrontFacing(direction: Vector3): boolean
Determine if the triangle is oriented towards the given direction or not.

Returns
True if the triangle is oriented towards the direction parameter.
Parameters
- direction: Vector3
  
  The direction to test.
Returns boolean
- Defined in Triangle.d.ts:136

set

set(a: Vector3, b: Vector3, c: Vector3): Triangle
Sets the triangle's a, b and c properties to the passed vector3s. Please note that this method only copies the values from the given objects.

Returns
This instance.
Parameters
- a: Vector3
  
  The first point
- b: Vector3
  
  The second point
- c: Vector3
  
  The third point.
Returns Triangle
- Defined in Triangle.d.ts:63

setFromPointsAndIndices

setFromPointsAndIndices(points: Vector3[], i0: number, i1: number, i2: number): Triangle
Sets the triangle's vectors to the vectors in the array.

Returns
This instance
Parameters
- points: Vector3[]
  
  Array of Vector3s
- i0: number
  
  index into points array
- i1: number
  
  index into points array
- i2: number
  
  index into points array
Returns Triangle
- Defined in Triangle.d.ts:72

`Static` containsPoint

containsPoint(point: Vector3, a: Vector3, b: Vector3, c: Vector3): boolean
Parameters
- point: Vector3
- a: Vector3
- b: Vector3
- c: Vector3
Returns boolean
- Defined in Triangle.d.ts:29

`Static` getBarycoord

getBarycoord(point: Vector3, a: Vector3, b: Vector3, c: Vector3, target?: Vector3): Vector3
Returns
Parameters
- point: Vector3
- a: Vector3
- b: Vector3
- c: Vector3
- Optional target: Vector3
Returns Vector3
- Defined in Triangle.d.ts:28

`Static` getNormal

getNormal(a: Vector3, b: Vector3, c: Vector3, target?: Vector3): Vector3
Returns
Parameters
- a: Vector3
- b: Vector3
- c: Vector3
- Optional target: Vector3
Returns Vector3
- Defined in Triangle.d.ts:18

`Static` getUV

getUV(point: Vector3, p1: Vector3, p2: Vector3, p3: Vector3, uv1: Vector2, uv2: Vector2, uv3: Vector2, target: Vector2): Vector2
Parameters
- point: Vector3
- p1: Vector3
- p2: Vector3
- p3: Vector3
- uv1: Vector2
- uv2: Vector2
- uv3: Vector2
- target: Vector2
Returns Vector2
- Defined in Triangle.d.ts:30

`Static` isFrontFacing

isFrontFacing(a: Vector3, b: Vector3, c: Vector3, direction: Vector3): boolean
Parameters
- a: Vector3
- b: Vector3
- c: Vector3
- direction: Vector3
Returns boolean
- Defined in Triangle.d.ts:31

Class Triangle

Hierarchy

Index

Constructors

Properties

Accessors

Methods

Constructors

constructor

Parameters

Optional a: Vector3

Optional b: Vector3

Optional c: Vector3

Returns Triangle

Properties

a

b

c

Accessors

isBox2

Returns boolean

isBox3

Returns boolean

isColor

Returns boolean

isCylindrical

Returns boolean

isEuler

Returns boolean

isLine3

Returns boolean

isMatrix3

Returns boolean

isMatrix4

Returns boolean

isPlane

Returns boolean

isQuaternion

Returns boolean

isRay

Returns boolean

isSphere

Returns boolean

isSpherical

Returns boolean

isTriangle

Returns boolean

isVector2

Returns boolean

isVector3

Returns boolean

isVector4

Returns boolean

Methods

clone

Returns

Returns Triangle

closestPointToPoint

Returns

Parameters

pt: Vector3

Optional target: Vector3

Returns Vector3

containsPoint

Returns

Parameters

point: Vector3

Returns boolean

copy

Returns

Parameters

triangle: Triangle

Returns Triangle

equals

Returns

Parameters

triangle: Triangle

Returns boolean

getArea

Returns

`Optional` a: Vector3

`Optional` b: Vector3

`Optional` c: Vector3

`Optional` target: Vector3

`Optional` target: Vector3

`Optional` target: Vector3

`Optional` target: Vector3

`Optional` target: Plane

`Optional` target: Vector2

`Static` containsPoint

`Static` getBarycoord