more than 6 digits ?

Seth · June 08, 2011, 01:34:18 PM

Hello there !
I have a little problem : I imported a camera from Maya, the same way I did with the last scenes I am working on, but the problem is that the coordinates out of Maya have more than 6 digits. So when this .chan is imported into TG2, the camera doesn't react properly (like shaking).
any idea, guys ?

Tangled-Universe · June 08, 2011, 02:01:33 PM

With 6 digits for position it's not enough?

Is it like: 1234.56 = 6 digits
Or like 0.123456 = 6 digits

In the first case I can imagine it gives troubles in TG2, but in the second case?

Seth · June 08, 2011, 02:03:49 PM

12345.678 => problem

Tangled-Universe · June 08, 2011, 02:09:25 PM

Oh...that's lame

Only thing I can think of is offsetting your camera export in Maya to generate smaller numbers.
Then use the same offset in a translate shader in TG2 to move the terrain/shaders/atmosphere.

Seth · June 08, 2011, 02:25:13 PM

yeah... I'm trying to rescale everything in Maya and change the import scale to see if it works better ^^

Tangled-Universe · June 08, 2011, 02:28:34 PM

I'm actually quite surprised that the system is limited to 6 symbols in the way you describe it.
Yet another reason to stay as close to the origin as possible in TG2.
I wonder if it would have great impact if Matt could change this from 6 to 8 or more. Would it become slower?

Seth · June 08, 2011, 02:33:58 PM

Quote from: Tangled-Universe on June 08, 2011, 02:28:34 PM

Yet another reason to stay as close to the origin as possible in TG2.

absolutely right !!!!

Matt · June 08, 2011, 02:51:34 PM

Terragen will import as many digits as your .chan file contains (up to the limit of a 64-bit "double" floating point value). This sounds like a limitation of the .chan exporter in Maya, not Terragen's importer. Although Terragen only displays up to 6 digits in the edit fields, the internal value can be much more precise. It renders with those precise internal values.

Seth · June 08, 2011, 02:53:33 PM

okidoki, thanks for that Matt !!!
gonna find someone to check my exporter in the company right now !!! ^^

Cheers !

Tangled-Universe · June 08, 2011, 03:12:12 PM

The MEL-script I've found here: http://forums.planetside.co.uk/index.php?topic=1466.0 exports in 10 digits.
Open the .mel in a text-editor and search for "-pre" and you'll find one string which says "-pre 10".

There should be a similar string in your melscript. If it is not defined it is set to 6 I just read somewhere.
I'm afraid it isn't defined, so you should lookup for a similar part of the code?

Seth · June 08, 2011, 03:31:51 PM

holy crap ! thanks Martin !!!

Tangled-Universe · June 08, 2011, 03:37:02 PM

Say thanks to Google, I know nothing about Maya and/or MEL scripting

But did it work?

Seth · June 08, 2011, 04:01:32 PM

nope... no "-pre" of anykind. Just look at the file you send and do some google research too

but I'll see tomorrow... someone here should be able to edit correctly the script. ^^
thanks again Martin !

Seth · June 09, 2011, 04:27:40 AM

Matt was right, I had the problem in the preview box, but when I rendered the all animation, the camera was moving smoothly !

Tangled-Universe · June 09, 2011, 08:03:45 AM

Quote from: Seth on June 09, 2011, 04:27:40 AM
Matt was right, I had the problem in the preview box, but when I rendered the all animation, the camera was moving smoothly !

Aaahhh...so it was actually a discrepancy between preview and real render, good to know.