VRayTranslator ignores post translate code

[frueter]

I got a VRayRender node that uses this post translate script to output to angular map/dome master:

from vray.utils import *
domeCam=create("CameraDome", "__camera_dome__")
domeCam.set("fov", math.pi)

However, when exporting a vrscene file and rendering via standalone this code is ignored.
Is there a workaround?

Cheers,
frank

[georgi.zhekov]

Hey,

The post-translate script happens after the export of the scene so that's why it's not working.

Instead of that post-translate script you can use VRayCamera instead of the regular camera and set it to behave like a dome camera.

You can find more at - https://docs.chaosgroup.com/display/...%7C+VRayCamera

[frueter]

I had checked out the projection types in the VRay camwera but could not find a dome type. Only fisheye and that's different.

[georgi.zhekov]

You can set the type to Spherical Panorama and override the FOV to 180 - this should give you pretty much the same result as the post-translate script.

[frueter]

but that produces an equirectangular image. I need an azimuthal equidistant image like this:
http://pineappleware.com/images/azimuthal2.gif

[georgi.zhekov]

Ah, my bad. Totally missed that.
A simple workaround for the Standalone issue would be to open your vrscene file in a text editor and add the following lines:

CameraDome camera_dome {
  flip_x=0;
  flip_y=0;
  fov=3.141593;
}

This is essentially what the post-translate script does.

[vlado]

I got a VRayRender node that uses this post translate script to output to angular map/dome master:

from vray.utils import *
domeCam=create("CameraDome", "__camera_dome__")
domeCam.set("fov", math.pi)

However, when exporting a vrscene file and rendering via standalone this code is ignored.
Is there a workaround?

Cheers,
frank

It doesn't work because there is already another camera in the scene (the regular perspective one). However, in Maya, you can add the V-Ray dome camera attributes to the camera you normally render from:
https://docs.chaosgroup.com/display/...era+Attributes

Best regards,
Vlado

[frueter]

Thanks Geori, I will try that. Vlado, can this be implemented as another projection type in the camera itself in a way that the standalone will pick it up?

[vlado]

Yes, see my suggestion above. If you add those attributes, V-Ray will export a CameraDome plugin into the .vrscene file.

Best regards,
Vlado

[frueter]

oh, I misunderstood. It sounded like this will work in Maya but not Nuke. I will have a look, thanks.

[frueter]

yeah, I'm a little confused now. How would I add those attributes in Nuke? Is this something I can do in the VrayTranslator's parameter override?
Also, in the link you posted a equirectangular image is shown, not a dome camera i.e. equiazimuthal).

[vlado]

Ugh many apologies, I just now realized this is in the Nuke section; not sure why I thought it was Maya. You are right, we need to add the dome camera to the options - I will make a note about it. So many editing the .vrscene file is the only thing to do for now.

Best regards,
Vlado

[frueter]

Ah great, thanks for confirming. Happy to edit the file for now.