Yaml Parsing Madness

I'm trying to get my Yaml parsing working and most things seem to work fine. I have a very curious problem with stripes though.

Rending the following code with my Yaml parser results in:

- add: camera
 width: 480
 height: 320
 field-of-view: 1.047197551196598
 from: [-5, 2, -4]
 to: [0, 2, 0]
 up: [0, 1, 0]

- add: light
 at: [-3, 6, -8]
 intensity: [1.2, 1.2, 1.2]

# sphere
- add: sphere
 material:
   pattern:
     type: stripes
     colors:
       - [1, 0.5, 0]
       - [1, 0.3, 0]
     transform:
       - [ rotate-z, 1.570796326794897 ]
 ambient: 0.15
 transform:
 - [ scale, 2.0, 2.0, 2.0 ]
 - [ translate, 1.5, 1.5, 0 ]



Writing the same Sphere by hand and then removing the object from the same world and adding it renders what appears to be the correct stripe pattern.


       let sphere = Sphere()
       sphere.material.pattern = StripePattern(a: Color.init(r: 1, g: 0.5, b: 0), b: Color(r: 1, g: 0.3, b: 0))
       sphere.transform = Matrix4x4.translated(x: 1.5, y: 1.5, z: 0) * Matrix4x4.scaled(x: 2.0, y: 2.0, z: 2.0)
       let radians = Double.pi / 2
       sphere.material.pattern?.transform = Matrix4x4.rotatedZ(radians)



I've looked over my matrices, my inverse matrices, the implementation for the patternAt() function for stripe and I cannot for the life of me figure out how the normal stripe pattern starts to look like it repeats on more than one axis. Any ideas what I should poke at to try to figure this one out?