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import Triangle2D from 'canvas-graph-creator/src/js/util/triangle-2d.js'

public class | source

Triangle2D

Class representing a 2D triangle.

Test:

Triangle2D

Constructor Summary

Public Constructor
public	constructor(a: Point2D, b: Point2D, c: Point2D) Constructs a Triangle2D object.

Member Summary

Public Members
public	a: *
public get	area: number: * Getter for the (signed) area of the triangle.
public	b: *
public	c: *

Method Summary

Public Methods
public	getBarycentricCoordinates(point: Point2D): Point2D Find the barycentric coordinates of a point relative to this triangle.
public	getPointFromBarycentricCoordinates(point: Point2D): Point2D Find the cartesian coordinates of a point given its barycentric coordinates.

Public Constructors

public constructor(a: Point2D, b: Point2D, c: Point2D) source

Constructs a Triangle2D object.

Params:

Name	Type	Attribute	Description
a	Point2D		First vertex of the triangle.
b	Point2D		Second vertex of the triangle.
c	Point2D		Third vertex of the triangle.

Test:

Triangle2D #constructor(a, b, c)

Public Members

public a: * source

public get area: number: * source

Getter for the (signed) area of the triangle.

     1  | x1 y1 1 |

area = --- | x2 y2 1 | 2 | x3 y3 1 |

Source: http://mathworld.wolfram.com/TriangleArea.html

Return:

Signed area of the triangle.

Test:

Triangle2D .area

public b: * source

public c: * source

Public Methods

public getBarycentricCoordinates(point: Point2D): Point2D source

Find the barycentric coordinates of a point relative to this triangle. Source: http://stackoverflow.com/a/14382692/1418962 More info: https://en.wikipedia.org/wiki/Barycentric_coordinate_system#Conversion_between_barycentric_and_Cartesian_coordinates

Params:

Name	Type	Attribute	Description
point	Point2D		The point to find the barycentric coordinates of.

Return:

Point object containing the barycentric coordinates.

Test:

Triangle2D #getBarycentricCoordinates

public getPointFromBarycentricCoordinates(point: Point2D): Point2D source

Find the cartesian coordinates of a point given its barycentric coordinates.

Params:

Name	Type	Attribute	Description
point	Point2D		The point to find the coordinates of.

Return:

Point object containing the cartesian coordinates.

Test:

Triangle2D #getPointFromBarycentricCoordinates