Rendering a pass for 3d people in animations

[vray.curiosity]

Hi guys i was wondering is there any way to render an animation with people and have some pass as such to remove them if i decide and not affect the animation. would great appreciate any advice

[alexyork]

The only way to do that would be to simply render them in a separate pass, with their shadows. You'd also potentially need to render a separate reflection pass to deal with that.

[vray.curiosity]

Thats the tricky part, then what if part of the person is hidden behind a window frame, a couch or something for example? how is that overlayed?

[vray.curiosity]

anyone? i have a animation with people walking behind items so in some cases on their upper body will be shown and so on, is there a custom shader in vray or render pass that allows for me to extract just this information? ahh man, its so hard to get any information on this anywhere, if it exists its like some big secret

[MarkOlley]

Surely you could render out your animation without the people in as one pass then render the people separately in another pass where you make all other geometry in the scene invisible to the camera.
This would mean that the people would still be occluded at the correct points. You would have to use a MatteShadow material in order for the shadows to still be rendered out from the animated people.
You could then comp the two together if you decided you needed the people in there.

[vray.curiosity]

that's the plan of action i was looking to take so just add a plane underneath the people and hide all other geometry and make the plane material matte with shadows?

[Neilg]

render the glass as a seperate pass if they're behind it, and link a vray sphere fade object to each person.

[vray.curiosity]

aha!!! this is what i needed!! Neil your the boss!!!