gistfile1.coffee

Function::property = (prop, desc) ->
  Object.defineProperty @prototype, prop, desc

class vec3i
    X = 0
    Y = 1
    Z = 2
    constructor: (x, y, z) ->
        @data = new Uint32Array()
        @data[X] = x
        @data[Y] = y
        @data[Z] = z

    @property 'x',
        get: -> @data[X]
        set: (x) -> @data[X] = x
    @property 'y',
        get: -> @data[Y]
        set: (y) -> @data[Y] = y
    @property 'z',
        get: -> @data[Z]
        set: (z) -> @data[Z] = z

console.log(new vec3i(1,2,3).x)