moved object in animation

[priad]

Hi everybody

My questions are simple:
How I must do to make an interior animation with moved objet inside?(architectural animation with escalator stairs)
Which mode (incremental add/multiframe incremental/addtocurrent map)
What is the best setting to have a good GI?
I must use photon map for the second bounces or direct computation.
And if photon map: I will must calculate photon map on each frame or can I store him?
Can I composite the stairs and store irmap without bug in GI?
My vray version is 1.09.03r
Thx

[tammo]

if there is something moving in your animation you have a big problem.
you have to use single frame mode and you cant get it flicker free with reasonable render times.

solutions:

a) light the scene without GI

b) render the scene with incremential add mode without the moving objects.
render the moving objects without GI and composite the two layers in post.

c) use texture baking. i havent done this because its difficult and its a nightmare if you have last minute changes.

[priad]

Thx OK.
But If I say to the system panel that I want my animated lift(for example) does not generate GI,Receive GI,cast shadows and receive shadows, You think it can run with a saved irmap?

[Tom.TNT]

other use script Imap Control.
Imap Control alows you to save a series of Irradiance maps per frame with V-Ray® and then allows you to reuse those maps per frame
http://www.varcht.com/tools.htm

[tammo]

tom, can you please explain this?
how does this script prevent flickering?

[ezrhythm]

do the escalator separately.

your static scene render as you render it... per 20-30 frame IMAP, anyway.
Save the scene to yourscene_escalator_matte.max (LOL whatever)

select escalator, hide it, select all scene, assign default vray material (grey) right click > VRAY PROPERTIES... make object MATTE, -1 alpha contribution, no reflection, no refraction...Unhide all, render it with 70,40 , 3-4 prepasses...

Antialias tho should be higher than usual to avoid grey outline from your environment color... OR when you render your static scene, put it as Environemnt background (ANIMATED) > this way you can save loads of time on LOW AA setting since your escalator edges gonna be "grabbin" few pixels from ENVIRONMENT....

Premiere... done.

[priad]

THX
Good tips, Iwill try it!