@pixi/math

Vector Operations

The @pixi/math package provides a Point class for 2D vector operations. You can create points, add them, and perform other vector operations.

const { Point } = require('@pixi/math');

const point1 = new Point(10, 20);
const point2 = new Point(30, 40);
const result = point1.add(point2);
console.log(result); // Point { x: 40, y: 60 }

Matrix Transformations

The Matrix class allows for complex 2D transformations including translation, scaling, and rotation. This is useful for manipulating objects in a 2D space.

const { Matrix } = require('@pixi/math');

const matrix = new Matrix();
matrix.translate(10, 20);
matrix.scale(2, 2);
console.log(matrix); // Matrix { a: 2, b: 0, c: 0, d: 2, tx: 10, ty: 20 }

Rectangle and Circle Geometry

The package includes classes for geometric shapes like Rectangle and Circle, which provide methods to check for containment and intersection.

const { Rectangle, Circle } = require('@pixi/math');

const rect = new Rectangle(0, 0, 100, 100);
const circle = new Circle(50, 50, 25);
console.log(rect.contains(50, 50)); // true
console.log(circle.contains(50, 50)); // true