Day 13, Big Stripey Lie

Single color objects are boring, so some color patterns would be a nice addition. Like stripes, alternating between two colors, a and b.

def color_at(point)
  (point.x.floor % 2).zero? ? @a : @b
end

Ok, uniform stripes all over the world is not the best thing, so they need to have transforms attached, like everything else. That’s more like it.

def color_at_object(object, point)
  object_point = object.inverse * point
  pattern_point = @inverse * object_point
  color_at(pattern_point)
end