kld-affine

A collection of classes used for affine geometry. This currently consists of the following:

• Point2D
• Vector2D
• Matrix2D

These have been extracted from kld-intersections so they can stand alone.

Please note that as of version 0.0.7, all of the self-modifying functions (like addEquals, subtractEquals, etc.) have been removed.

Install

npm install kld-affine

Point2D

A class used to represent two-dimensional points on a plane. This currently supports the following methods:

• clone
• add
• subtract
• multiply
• divide
• equals
• lerp
• distanceFrom
• min
• max
• transform
• toString

Vector2D

A class used to represent a two-dimensional vector. This currently supports the following methods:

• Vector2D.fromPoints
• length
• magnitude
• dot
• cross
• determinant
• unit
• add
• subtract
• multiply
• divide
• angleBetween
• perp
• perpendicular
• project
• transform
• equals
• toString

Matrix2D

A class used to represent affine transformations. This current supports the following methods:

• Matrix2D.IDENTITY
• multiply
• inverse
• translate
• scale
• scaleAt
• scaleNonUniform
• scaleNonUniformAt
• rotate
• rotateAt
• rotateFromVector
• flipX
• flipY
• skewX
• skewY
• isIdentity
• isInvertible
• getScale
• equals
• toString