aabb-2d

2d axis aligned bounding boxes

aabb-2d

Axis aligned bounding boxes for fun and profit.

var aabb = require('aabb-2d')
 
var bounding_box = aabb([0, 0], [12, 12])   // x, y == 0, 0; width, height == 12, 12 
  , other = aabb([10, 10], [2, 2])
 
bounding_box.intersects(other) // true 
bounding_box.union(other) // -> aabb([10, 10], [2, 2]) 
 
bounding_box.translate([2, 2])  // moves the bounding box 
bounding_box.expand(other)  // returns a new aabb that surrounds both bboxes 
 

API

returns a new aabb.

returns the perimeter length of the box.

returns the integer perimeter length of the box (using a bit shift instead of a multiply.)

returns the area of the box.

returns:

    x0/y1 ------ x1/y1
      |           |
      |           | <-- height
      |           |
      |           |
    x0/y0 ------ x1/y0
            ^
            |
          width

moves the box. returns itself.

returns true if the two bounding boxes intersect (or touch at all.)

returns a new aabb representing the shared area of the two aabb's. returns null if the boxes don't intersect.

License

MIT