I recently had a customer requirement to:
- read Lot lines and lot labels as two separate layers from a single DWG file
- where possible, stitch the lot lines together to make a polygon
- where possible, figure out which lot label is inside each of the newly generated polygons and aggregate those two geometries into one RWO in Smallworld
It turns out that step#3 can easily be done with PointOnAreaOverlayer and Aggregator.
But step#2 didn't seem that easy. I had tried Intersector, TopologyBuilder and Snapper but I never seemed to be able to get the over/under shoots to snap. Then I remembered to check http://fmepedia.com and discovered that there is a custom transformer that does exactly what I needed. It is called the SmartCleaner and is described here.
You can choose to either link or embed this Custom Transformer. I chose to embed it into my existing workspace. This made it transportable across user machines without having to ensure that each user explicitly installed the custom transformer.
When I looked at the internal workings of the SmartCleaner, I realized why my efforts to use Intersector and Snapper were inadequate. The following screen snapshot shows the complexity of the SmartCleaner.
All I can say is a hearty "thank you" to Dave Campanas at Safe Software for creating this Custom Transformer and making this over/under shoot snapping so easy to implement.