Vray and python

On 08/11/2013 at 12:19, xxxxxxxx wrote:

Does anyone know how to add a Vray light tag using python? I have opened up the res file for vray and found: tVrayLightTag is used to define the tag however I cannot seam to get it to work.

Any ideas on this would be really helpfull!


On 08/11/2013 at 21:25, xxxxxxxx wrote:

I do not use vray but I think that if you use the Script Log, when you choose the vray tag, you will see the CallCommand ID.

On 11/11/2013 at 19:25, xxxxxxxx wrote:

the call command comes up as c4d.CallCommand(100004788) and when I run that nothing happens. no light  tag is created. :(

On 12/11/2013 at 15:27, xxxxxxxx wrote:

sorry my mistake , this is a tag so callcommand not working.

Here I will show you how you should work when scripting:

1- Will we find the Vray light tag ID:
add a light to your scene;
add to it a Vray light tag
Select the light

import c4d
from c4d import gui
#Welcome to the world of Python
def main() :
    mydoc = c4d.documents.GetActiveDocument()    
    myobj = doc.GetActiveObject()
    print myobj.GetTags()    
if __name__=='__main__':

In my case, I added Xpresso tag and I get:
[<c4d.modules.graphview.XPressoTag object called 'XPresso/XPresso' with ID 1001149 at 0x10C249A0>]

2- Now you have the ID, so we will call it myID:
add a new light and select it:

import c4d
from c4d import gui
#Welcome to the world of Python
def main() :
    myID = (put here the ID returned by the 1 print)
    mydoc = c4d.documents.GetActiveDocument()    
    myobj = doc.GetActiveObject()
    if myobj==None or myobj.GetType() != c4d.Olight:
       gui.MessageDialog('Select a Light!')
    mytag = c4d.BaseTag(myID)
    myobj.InsertTag(mytag, None)
if __name__=='__main__':


On 13/11/2013 at 07:55, xxxxxxxx wrote:

On a side note: Built-in tags have a symbol name in the c4d module which should be preferred over
using integer IDs. Eg c4d.Texpresso

You can also use BaseObject.MakeTag() instead of the BaseTag() and BaseObject.InsertTag() construct.


On 15/11/2013 at 01:09, xxxxxxxx wrote:

Thanks Niklas,

Need to refresh c4d sdk in my brain.

Thansk again for this note


On 21/11/2013 at 11:35, xxxxxxxx wrote:

Thanks for your help guys! I finally got a chance to get back on this project. Both of your solutions worked like a charm :slightly_smiling_face: