So ...
What I'm *really* after is a .exr file of any area I wish to nominate on a (procedurally displaced) terrain
- accepted solution: plug it in to a Heightfield Gen node, click Generate, right-click on Gen node -> save file as (either .ter or .exr)
However, the further away from 0,0,0 the Heightfield Gen node is placed, the greater the differences between the procedural terrain and what gets generated.
- e.g. #1 - default TG2 scene:
- add default power fractal, then in nodes panel plug it in to default Heightfield Gen node ("Shader") and click Generate
- add camera at 5000, 10000, 5000 pointing straight down, set to ortho @ 10,000x10,000, add Micro Exporter and render
to generate terrainFromHtf.lwo
- now plug power fractal terrain straight in to "Computer Terrain", change Micro Exporter save filename and render
to generate terrainFromProc.lwo
- a comparison of terrainFromHtf.lwo with terrainFromProc.lwo show that the further away from 0,0,0 the geometry
gets, the greater the discrepancy ...
- e.g. #2 - greater distance offset:
- set up a similar project to above, but make the heightfield box smaller @ 1000x1000m, again 1000x1000 points
- set the heightfield shader position to 20,000x20,000
- set the heightfield Generate position (Use Shader Tab) also to 20,000x20,000
- once more create a Camera setup in the center of this to export geometry via Micro Exporter
- now render & save exports to different filenames as per first example
- open resulting files and compare ... huge differences
What I suspect is that the heightfield is generating in flat earth coordinates, whereas the procedural terrain is spherically generated.
However, THE output I am ultimately after is a .exr file accurate to TG2 procedural terrain (read NO differences), to be used as a displacement map in another 3D app to aid scene correlation.
Is this a can do via some other means?
Cheers & thanks in advance