@ishikawa-masashi/math: A Typescript vector and matrix math library

@ishikawa-masashi/math is a collection of vector, matrix and quaternion classes written in Typescript with no dependencies.

How to install it

Using npm or yarn

npm install --save ts-matrix
yarn add ts-matrix

Or add the unpkg cdn link to your html

<script src="https://unpkg.com/ts-matrix">

The library is built as an ECMAScript module (.mjs file), but it also exports a UMD version if needed.

Usage

Import the module, from Typescript or ES6 javascript.

import { Vector3, Matrix } from '@ishikawa-masashi/math';

Then use the methods as you want :)

const v1 = new Vector([1, 2]);
const v2 = new Vector([3, 1]);
v1.add(v2);
// ==> [4, 3]

Most operation return a new Vector instance.

If you use typescript, the declarations files are available with self documentation.

Documentation

Vectors

Instance methods

| method | description | |--------|-------------| | at(row: number) | Get the value of a cell | | rows() | Returns Vector's size | | values() | Returns Vector values as an array | | reset() | Sets all matrix values to 0 | | addAValue() | Add a new 0 to the Vector | | addARow() | Add a new empty row to the Matrix | | equals(vector: Vector) | Checks equality between two vectors | | negate() | Negates the Vector (change all cells arithmetic sign). Returns a new instance. | | length() | Returns the vectors length | | squaredLength() | Returns the vectors squared length | | add(vector: Vector) | Adds all given values to the current Vector instance. Both vectors must have the same dimension. Mutates current instance. | | substract(vector: Vector) | Substracts all given values to the current Vector instance. Both vectors must have the same dimension. Mutates current instance. | | multiply(vector: Vector) | Multiplies all given values to the current Vector instance. Both vectors must have the same dimension. Mutates current instance. | | divide(vector: Vector) | Divides all given values to the current Vector instance. Both vectors must have the same dimension. Mutates current instance. | | scale(scale: number) | Multiply all vector values by the given scale. Mutates current instance. | | normalize(scale: number) | Computes the normalized Vector. Mutates current instance. | | dot(vector: Vector) | Computes the dot product between two Vectors. | | cross(vector: Vector) | Computes the cross product between two Vectors. Returns new instance | | mix(vector: Vector, time: number) | Computes the mix product between two Vectors. Returns new instance |

Static methods

| method | description | |--------|-------------| | get360angle(VectorA: Vector, VectorB: Vector) | Compute the angle between two Vectors. Both vectors must be of dimension 3 exactly. The returned angle is signed, thus -180º < angle < 180º |

Matrices

Instance methods

| method | description | |--------|-------------| | at(row: number, col: number) | Get the value of a cell | | rows() | Returns matrix rows as an array | | cols() | Returns matrix columns as an array | | values() | Returns matrix values as a bi-dimentional array | | reset() | Sets all matrix values to 0 | | addAColumn() | Add a new empty column to the Matrix | | addARow() | Add a new empty row to the Matrix | | equals(matrix: Matrix) | Checks equality between two matrices | | setAsIdentity() | Fills a squared matrix with the identity values (diagnonal 1) | | multiply(matrix: Matrix) | Multiply two matrices. Returns a new instance. | | determinant | Compute the determinant of the matrix. | | getCofactor(row: number, col: number) | Compute the cofactor of the matrix. Returns a new instance. | | transpose() | Transpose the matrix. Returns a new instance. | | inverse() | Inverse the matrix. Returns a new instance. |

Static methods

| method | description | |--------|-------------| | identity(dimension: number) | Returns a new squared identity Matrix |

Contributing

Any contribution is welcome, whether it is an issue, PullRequest, or just a comment!

Made with love by Florent Catiau-Tristant (@kapcash)