rectangles

Checks for intersections & containment between rectangles using classes
Simply clone/download this repo & copy main.js, point.js, rectangle.jsto a directory of choice

Usage

Initialization

First, we need to instantiate point and rectangle classes like the following:

const Point = require("<path>/point.js");
const Rectangle = require("<path>/rectangle.js").Rectangle;
let bottomLeft = new Point(4, 2);
let topRight = new Point(9, 7);
let rectangle = new Rectangle(bottomLeft, topRightA);

Pointis initialized as Point(<x-coordinate>, <y-coordinate>) Rectangle validates the input points at initialization & will be empty in these conditions:

• Bottom left point is above or to the right of top right corner and vice versa
• Points are not numbers
• Bottom left and top right points share x or y coordinates
• Empty/undefined inputs

Getting intersection points and checking adjacency

// rectangleA & rectangleB are of the Rectangle class
getIntersect(rectangleA, rectangleB);

getIntersect returns an object:

{
  leftIntersect: <Point>,
  rightIntersect: <Point>,
  isAdjacent: <boolean>
}

Object will be empty if rectangles do not intersect isAdjacentis true if rectangles are adjacent, false otherwise

Checking if a rectangle contains another

// contains() is a class method of Rectangle
rectangleA.contains(rectangleB);

returns true if rectangleA contains rectangleB, false otherwise

Testing

1. Tests are located in test/test.js
2. To run tests: npm test