This kinda sucks because thats why I BOUGHT terragen3...
I assume I am supposed to import the DEM from the terrain screen and select import DEM? It seems pretty straightforward. It is a JP2 file I am bringing in which Terragen is supposed to understand...
Are you sure the file is actually a DEM? JPEG 2000 (.jp2) is typically just an image format (often used for orthoimages) which you can generally load if you use the "Geog Image Map Shader"
If it is indeed a DEM we would definitely want to take a look at it. What's the source of the file?
I am getting LROC data from the Lunar orbiter site just like in the page showing it in the new features for import/export....
I see Geog Image Map Shader in the shaders tabbut nothing where you expect it in the terrain tab... That doesnt work to load the file...
Maybe someone can tell me WHICH files load WHERE? I was on the LROC browser and obtained a file in JP2 format which preserves the heightfield differences. Its one of three formats available... One is IMG, then ArcGrid, and finally JP2. There is nothing in the DEM folders online with a suffix DEM. They are one of those others.
I simply want to produce segments of the moon as effortlessly as possible and T3 says it can do it. I cant find anything online to assist in this so any help would be just wonderful!
The data we show in that example is IMG or TIFF (GeoTIFF) format, like this:
That's the more standard format for *height* "DEM" data.
I would suggest trying the IMG or ArcGrid options that you mention are available alongside the JP2.
If you can link us to the specific download(s) you're having trouble with we can try to figure out if they can be loaded in TG, and if so, how best to do so.
Ok I thought it was JP2.... I am on that search page for RDR data ( dont know why that is important or not) but I see the GeoTIFF files for download as well as IMG files... These just get loaded in the terrain tab as DEM?
GeoTIFF and IMG should both load in as DEMs. They will probably have georeferencing enabled by default, which means that they may not be visible right away if their position on the planet/moon is far away from where your camera is. You should make sure to scale the planet to moon-size, and then zoom out and navigate around the planet to find your terrain. Alternatively you can disable Georeferencing if you don't need the terrain to be in the correct position on the sphere.
ok I see it in the heighmap thumbnail but as you say its elsewhere in the planet so I have to find the reference checkbox somewhere...
To disable Georeferencing, look in the settings for the green Geog Heightfield Load node (it will be named for the loaded file and connected to the red Heightfield Shader, which will also have the name of the file loaded).
Ok I can turn off georeferencing in the node and see the map on the heightfield thumbnail preview. It looks like the Moon. ... But when I render I still see the featureless gray of an empty lansccape. My Camera shows on the thumbnail as well with its FOV in the thumbnail. When I select copy the camera view to the current render camera and render I see nothing.
These are DEM files so am I supposed to bring this in through the Heightfield DEM load? Its there and visible in the heightfield little thumbnail view with the camera view superimposed but no render ever shows it... It CANT be this cryptic.. I must be making this way more complicated than it is.
So you're saying that when you render, there is no terrain shape/detail? Because the DEM does not include texturing, only height data, just to be clear. So the gray color of the terrain will remain, but you *should* see the height of the terrain change when you import data. And yes, you should be importing them using a Heightfield DEM Load.
I managed to get this to work... Looks great... Now I am onto the Mars HiRise data dems... These do not import correctly and show a negative image essentially where its like looking at the surface upside down and with it being down in a deep trough .... Do you know of any way to import this Mars MOLA data?
MOLA and HiRise are different, just to be clear. MOLA can be loaded with the MOLA Map Shader (under Displacement Shaders). The HiRise data should be loadable with a Geog Heightfield Loader, i.e. "Heightfield (Load DEM)". Georeferencing it properly and blending it into the MOLA data can be difficult though. There's a user on the forums here, Mahnmut, who may be able to give you some advice. You might want to private message him. Here's his profile:
when I loaded an IMG file from HiRise it came in inverted... in an deep well like it was in a deep tub. I think it was upside down too...
If it was "in a deep well", it may well have just has an altitude that was below the surface of your planet, but it doesn't necessarily mean it's *inverted*. Is your planet radius set to Mars size?
The DEMs I am loading for the LROC data that have a deep well are not georeferenced ... So shouldnt they just show up right at my camera location on my planet surface? I understand the altitude issue but dont know how to globally change the altitude if I have to other than to redo it by using a planet of the proper size..
Wont shutting off georeferencing cause the data to be set to the altitude of the current planet?
Not necessarily, no. It depends on how the data is encoded in the file. If you need to adjust heights, you'd use a heightfield operator (Add Operator button is visible at the bottom of the node list on the left and active when a heightfield is selected). Specifically, Heightfield Adjust Vertical and Curve Vertical.