I guess my issue is:
If I have a large PR that covers an entire city and 20+km surrounding, how do I direct scenproc to have buildings with 1-2 levels in one area and 3-4 in another if I don't know where the AGN cell boundaries are with respect to my GIS vector data (which covers the entire area)?
I figured that if I had the AGN areas I could add an attribute to the bulding polys in that area with a height range that I could get scenproc to read and use (??)
You can also just draw a rougj outline polygon of your city in your GIS tool. And then use the AddCellAttributeIfInside step to test if a till is in that polygon or not. Based on that attribute you then select a different height.
I sort of need the reverse... I need to know if a poly/city/building is in (or encompases) an AGN tile, and if so which one and how to specify building heights inside that cell (as opposed to the AGN tiles around it which may have different heights). It would be ideal if scenproc could calculate this from the data. By that I mean maybe a poly around the building outlines with the attribute for height range of that area or attributes within the building poly's themselves, and make an intelligent decision on what heights and percentages to put in the AGN tile value, without me needing to know about AGN tile locations...
AFAIK, you have to specify AGN building height for the entire cell, is that correct (thus the requirement to know where they are relative to my data)?
I'm still preparing the imagery and colour the seasons (currently a 150,000 x 100,000 pixel PSB file stitched together from 2000+ screenshots of aerial imagery) that I somehow need to export and georeference), so I have looked at the scenproc manual and the videos on youtube, but just trying to get my head around it so that I can be ready when I have my imagery done. Thus I may be missing something in my understanding the process.