I've been exploring this a bit more and found that there is a rotation macro for WM1 that works with WM2 also (no idea why it isn't in the "standard" library).
Using this macro, as well as the flip horizontal/vertical has given me 10 different orientations.
This, of course, is only useful if you are using a MW terrain..
I've also looked into the georeferencing function as some mentioned it as a workaround and I have no problem with lat/long coordinates; but I got stuck on another (for me) Terragen quirk - when I checked the georeferencing box, the terrain shifted [that was fine as the centre of the terrain was positioned at (0,0)and the lower lefthand corner (south west) was moved to that position] and increased in size by [at least] a factor of 10! But that appears to have been only in the (X,Z); there appeared to be no change in the Y (height) parameter......
To me, there also seems to be a mislabelling of Cartesian axes; the statistics section in the heightfield load node states the dimensions of my terrain as 7998 by 7998 (width by depth) but gives this to be the XY size...
I thought that Y was the up/down axis but here the Y coordinate is used to indicate the depth...
I think that this also links to Bobbystahr's question, "Why no flip Z?"
If Z is the depth coordinate (as it should be, given basic Cartesian geometry), it's a perfectly sensible question; however, as my terrain was given XY dimensions as being width and depth, this would imply that Z is, in this case, the height axis and flipping Z would mean that flip vertical will result in our HF terrain being turned upside down (a good reson for not having that parameter)...
So if someone can help me to understand why this is, I may be able to create a simple tute to help those who may want to use the georeferencing to rotate their heightfield terrains.
Apologies for any misuse of the correct terminology; I still have my training wheels on........
