It is very simple to create a floor slab directly from CAD, as long as that CAD already has the relevant outline. However, most CAD drawings usually does not have such an outline, but it is not ruled out that some drawings do have it. If there is an existing CAD outline, it will be very convenient to pick up and create a floor slab. Dynamo is a tool that can complete this repetitive action in batches.
The essence of a program or script is to allow computers to complete the same repetitive actions in batches.