Create an array of transformations along a rail curve. If an input shape is provided, it will be transformed accordingly.

Input parameters:

1. Sh → Optional shape to array.
2. Cr → Rail curve.
3. Cn → Number of transformed elements along the curve.
4. Or → Orientation constraint for the arrayed shapes.
   • 0 → None
   • 1 → Free
   • 2 → Road-like
   • 3 → Stair-like

Output parameters:

1. Sh → Arrayed shapes.
2. Tr → List of transformations applied to each element in the array.