kld-affine

kld-affine

• Installation
• Importing
• API

---

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

• Point2D
• Vector2D
• Matrix2D

Installation

npm install kld-affine

Importing

The following sections indicate how you can import the code for use in various environments.

Node

import {Point2D, Vector2D, Matrix2D} = require("kld-affine");

ESM in Modern Browsers

import {Point2D, Vector2D, Matrix2D} from './node_modules/kld-affine/dist/index-esm.js';

Older Browsers

<script src="./node_modules/kld-affine/dist/index-umd.js"></script>
<script>
  var Point2D = KldAffine.Point2D;
  var Vector2D = KldAffine.Vector2D;
  var Matrix2D = KldAffine.Matrix2D;
</script>

Bundlers

import {Point2D, Vector2D, Matrix2D} from "kld-affine";

API

Point2D

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

• clone
• add
• subtract
• multiply
• divide
• equals
• precisionEquals
• 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
• precisionEquals
• toString

Matrix2D

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

• Matrix2D.IDENTITY
• Matrix2D.translation
• Matrix2D.scaling
• Matrix2D.scalingAt
• Matrix2D.nonUniformScaling
• Matrix2D.nonUniformScalingAt
• Matrix2D.rotation
• Matrix2D.rotationAt
• Matrix2D.rotationFromVector
• Matrix2D.xFlip
• Matrix2D.yFlip
• Matrix2D.xSkew
• Matrix2D.ySkew
• multiply
• inverse
• translate
• scale
• scaleAt
• scaleNonUniform
• scaleNonUniformAt
• rotate
• rotateAt
• rotateFromVector
• flipX
• flipY
• skewX
• skewY
• isIdentity
• isInvertible
• getScale
• getDecomposition
• equals
• precisionEquals
• toString