Thanks for contacting us. I've attached a sample file that I hope helps to answer your question. It produces results similar to this:
To achieve that I've used the following technique
- A clipping spline is used to set the size of the area, though you could also have used X/Y splines or dimensions if you prefer. With a clipping spline if you want the rows to be vertical you can simply enter a value of 90 degrees for the Clipping Area > Z Rotation
- The blue segment is added to the generator's Left
input via a transform operator that randomises the size.
- The remaining box is wired to the Default
- The generator's Rules > Default Segment
mode is set to Scale
. This will ensure that the segment wired to the default segment fills the remaining space.
I hope that helps, please let me know if you have any further questions.