Hi
Just thought I would post up my positive findings from a terrain versus structures processing example recently. The site is a ruined castle in Wales (full model can be seen here ). The walls have some openings for former windows and arches and I was finding that in the terrain version of the 3D model produced straight from the verticals, or with obliques added after, all of the openings were blocked and smeared. Reprocessing in the structures version with obliques properly rendered these openings correctly without any smearing. I will definitely be using structures processing for all buildings from now, whether ruinous or not. See the examples below:
Terrain version with obliques added = smearing of arch opening
Structures version with obliques added = correct open arch displayed
Terrain version with obliques added = window openings blocked
Structures version with obliques added = windows correctly displayed