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Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
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c4dtoa exr driver - custom attributes

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Message 1 of 9
flimmer
329 Views, 8 Replies

c4dtoa exr driver - custom attributes

hey guys,

currently, i'm trying to write some custom attributes in a arnold driver, but have no idea how the syntax should be. could someone help me with that?

in maya it looks very easy. there are three options: one for the name of the metadata, one for the type of value and one for the value it self. but in cinema4d is just one option.

and then i would like to add some information via xpresso to this attributes, but i can't find any input.

finally, the idea is to transport some camera information to nuke.

it would be great if someone have a solution to this.

thanks,

marc

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Message 2 of 9

Indeed, the UI is not really user friendly at the moment. I'm gonna improve it in a future release.

The format is [type] [name] [value], where [type] can be INT, FLOAT, VECTOR2, MATRIX or STRING.

You won't be able to use Xpresso on this parameter because it uses a custom GUI widget. You can maybe write a little script in a Python tag to modify the value.

Message 3 of 9
flimmer
in reply to: flimmer

hey peter,

thank you for your quick anwser! this is very cool, here in the forum!

yes i already expected that i have to do that with python, but I did not know about the format.

i thing it's oke how it works now. you don't have to change the UI, but maby it is good to write some comment in the user guide.

thanks again,

marc.

Message 4 of 9

Sure, I'll definitely edit the docs.

For the python script look at the example here:

https://support.solidangle.com/display/A5AFCUG/Custom+GUI+%7C+Python#CustomGUI|Python-Arrays

You have to call SetParameter() with a sublevel to change the number of items and the values in the array.

Message 5 of 9
flimmer
in reply to: flimmer

hello peter,

i've been testing the last day a lot and have not gotten it to work.

even the simplest thing, as you described in the documetation, did not work:

INT myattr 1

am i doing something wrong or have I missed something?

thank you a lot!

Message 6 of 9

Hmm, seems like a problem in the export code. I will probably make a new bugfix release with this fix this week.

Message 7 of 9
flimmer
in reply to: flimmer

thank you! your support is awesome!

Message 8 of 9

Here's a wip build with the fix, please give it a go if you have some time:

https://safeshare.solidangle.com/index.php/s/ljxlVTXMM3eaGLz

password: c4dtoawip

Message 9 of 9

The fix is now available in 2.3.1.3.

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