Batch Rendering in python using Vray

Replies to This Discussion

Permalink Reply by Giulio Piacentino on September 24, 2013 at 4:04am

Hi Lauren

a long time ago, there used to be a switch in the VRay interface that was exactly to allow -_CloseRenderWindow to wait till the end of rendering. I think it was called 'batch mode' or something similar.

EDIT: it seems it's still therre. See: Global Switches -> Misc -> Batch render:

http://help.chaosgroup.com/vray/help/rhino/150R1/render_params_swit...

I hope this helps,

Giulio

--

Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by lauren vasey on September 24, 2013 at 4:26am

Thank you I was looking for that! If only I had asked earlier!

Lauren 

Permalink Reply by Oliver Bucklin on October 16, 2014 at 12:04pm

Hi Lauren!

did you have any luck with this? My scene is rendering fully, but it won't save to the designated file. Any help would be much appreciated

thanks!

Permalink Reply by Nicolo Bencini on May 14, 2014 at 1:41am

Dear Lauren,

I use the Python script below to Batch render in Vray. Just add the view names to the RViews list and run the script. I hope that this helps.

The VRay Batch Render option must be turned on for this to work. I also found that this does not work unless the views are included in the ViewPort Tab at the bottom of the Rhino workspace.

#Turn on Batch render in vray options before this is run

import rhinoscriptsyntax as rs

RViews = ["View1" , "View2"]

count1 = 0
for i in range(len(RViews)):
    rs.CurrentView(RViews[count1])
    rs.Command ("!_-Render")
    rs.Command ("_-SaveRenderWindowAs " + RViews[count1])
    rs.Command ("_-CloseRenderWindow")
    count1 += 1

Permalink Reply by Oliver Bucklin on October 16, 2014 at 11:51am

Hi Nicolo!

thanks for the script. How do I implement it? in the C# grasshopper definition from above or in python editor? my scene is rendering fully, but not saving. does this provide a solution?

Thanks!

Permalink Reply by Nicolo Bencini on October 16, 2014 at 12:52pm

Hi Oliver,

You should use it in the python editor. In order to use it it is important that you turn 'batch rendering' on in Vray and also that you add all the views that you would like to render to the viewport bar at the bottom of the rhino screen:

You can modify where to save the file by modifying the line:

 rs.Command ("_-SaveRenderWindowAs " + RViews[count1])

Permalink Reply by Joe Redwing Miranda on April 15, 2015 at 11:57pm

Hello Nicolo,  

I was hoping you could furtherdescribe how to edit the line properly as I am not familiar with rhinoscript.  I have tried adding a file path and outpath but I seem to be missing the proper syntax.

import rhinoscriptsyntax as rs
RViews = ["SectionTrans002" , "View2"]
count1 = 0
Outpath = "D:\My\File\path\goes\here\"

for i in range(len(RViews)):
rs.CurrentView(RViews[count1])
rs.Command ("!_-Render")
rs.Command ("_-SaveRenderWindowAs" + Outpath + RViews[count1])a
rs.Command ("_-CloseRenderWindow")
count1 += 1

Permalink Reply by Giulio Piacentino on April 16, 2015 at 1:24am

Hi Joe

this should do what you are expecting. Please make sure that indentation is the same as in this text.

import rhinoscriptsyntax as rs
RViews = ["Top" , "Perspective"]
Outpath = r"C:\my\path\here" #do NOT add trailing backslash
for i in range(len(RViews)):
    rs.CurrentView(RViews[i])
    rs.Command("!_-Render")
    command = "_-SaveRenderWindowAs \"" + Outpath + "\\" + RViews[i] + ".png\""
    rs.Command(command)
    #print command
    rs.Command("_-CloseRenderWindow")

I hope this helps,
Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Joe Redwing Miranda on April 16, 2015 at 3:40pm

Thank you so much Giulio, worked like a charm.

Regards