Corrupt Maya File, is it possible to work out a lights transform from its TransformHex value in VRscene file?

V-Ray V-Ray for Maya General
1

Hi I am at a bit of a loss. I have a maya scene which is corrupt and needs rebuilding. I have everythng other than the Sun transform from the file. I have a temp vrscene which contains the information but I cant convert it into something I can use in Maya, is this possible?

LightDome VRayLightDomeShape1 {
enabled=1;
transform=TransformHex(“0000000000000000FEFF7F3FFFFF7F3F000000000000000000000000FFFF7F3F0000000000000000000000000000000000000000000000000000000000000000”);

If anyone can help me it would be much appreciated

Thanks!

2

Was you Maya scene saved as an MA file rather than MB? If so you can open it in a text editor and delete corrupt parts there, its worked for me before.

3

Unfortunately it wasn’t. It was saved as MB. Good point though, it might be a good idea to begin saving MA files for that very reason.

Thanks

4

You can try this little tool we have for converting vrscene files from hex-encoded transform and mesh data back to vectors: https://docs.chaosgroup.com/display/…vrscenedehexer
Run it in a command prompt like this: vrscene_dehexer -u <yourScene>.vrscene <resultingDehexedScene>.vrscene
It will create a new file where the data is de-hexed.

If you only need your sun, you can just copy-paste only the lightDome plugin into a new file, save it as a .vrscene from your text editor and run it with the tool, to have a resulting file that only contains what you need.

5

Thanks for this, I have used the tool and unhexed the vrscene file, here is the result for the specific light.

SunLight VRaySunShape1 {
transform=Transform(Matrix(Vector(0.6, 5.551115e-017, 0.8), Vector(0.4115966, 0.8574929, -0.3086974), Vector(-0.6859943, 0.5144957, 0.5144957)), Vector(-1000, 750, 750));
target_transform=Transform(Matrix(Vector(0.9999999 , 0, 0), Vector(0, 0.9999999, 0), Vector(0, 0, 0.9999999)), Vector(0, 0, 0));
turbidity=2;
ozone=0.7;
intensity_multiplier=0.1;
size_multiplier=25;
filter_color=Color(1, 1, 1);
ground_albedo=Color(0.5, 0.5, 0.5);
blend_angle=5.739171;
horizon_offset=0;
up_vector=Vector(0, 1, 0);
invisible=0;
horiz_illum=25000;
sky_model=3;
shadows=1;
atmos_shadows=1;
shadowBias=0.02;
shadow_subdivs=8;
shadow_color_tex=AColor(0, 0, 0, 1);
photon_radius=50;
photonSubdivs=500;
causticSubdivs=1000;
diffuseMult=1;
causticMult=1;
enabled=1;
affectDiffuse=1;
affectSpecular=1;
diffuse_contribution=1;
specular_contribution=1;
channels=List(
);
channels_raw=List(
);
channels_diffuse=List(
);
channels_specular=List(
);
channels_full=List(
vrayRE_Light_Select
);
}

Do you have any pointers on how to apply this back into Maya as translate coordinates?

Many Thanks,

6

Ah, I have just realised that it is clearly the last section in the line that I need, i.e.


 Vector(-1000, 750, 750));

Thanks for the help, this will surely get me out of sticky situations in the future, although I have to say this was a particularly strange one :slight_smile:

7

Ah, forgot to mention that, yes. The last vector is the translation. There’s some useful matrix attributes in Maya that I usually use and just pass it the vectors, which Maya puts into the transform matrix and voila. Glad to know you’ve sorted this out.

8

Yes, I have, thanks for the help.