Presentation

[flingster]

not to sure what you mean here.
do you mean how do i composite it into my scene/photo backround?

or do you mean what type of setting should i put it in...eg driveway, rotating stage, showroom?

or non of the above...i wanna know how to render the damn thing...come on fling...sort your s**t out!!! heh heh.


cheers matey...just so we don't go off on a tangent here.:thumbsup:

[bobtronic]

I think it depends much on the model itself. I would
present an oldtimer different than a spacecar. Best is
you show us your model.

cheers, Bob

[handige_harrie]

I'm still a fan of null-rooms, white background and floor. Doesn't necessarily have to be white of course.

As for rendering, radiosity still gives the best results, but ambient occlusion is a lot faster. This enables you to do animations with it.

Check my tutorial:
http://www.shademaster.nl/peter/final-composit.jpg
http://www.shademaster.nl/peter/ao-tutorial.htm

Of course a realistic photo-composit is the CG holy grail but might not be the best way to present your model.

[Halogen]

yea you guys are on the right track. White scene like harry said, or composite in a photo. I like how your image turned out handige_harrie! Below is my car, might help.

I know its not perfect, but its all i can do on my computer (p3 500)
(this one is the incompleted version)
http://halogen.iron-warriors.net/images/corvettestingray.jpg

[wuensch]

superb model!
I would tweak with the shadow a little, because it shows artifacts and is too diffuse for the size of the car.
Might only be the the shadowmap-size.
Olli

[WSzP]

Really superb model. I think you should use soft shadows, with more transparency.
My other addition would be to change the platform (floor) colour to light yellow.

[Halogen]

Thanks for the positive comments on the model guys. I might change the shadow map. Are you guys saying that the scene it is in is adequate?

Would a basic render like this be ok? Or should i give a go at composing it into a scene. Plain white room/environment? Or showroom (not too sure how to do this one). That is the major focus i need. Thanks anyway :)

Harry, thanks for that tut, ive read through a bit of it and it looks interesting. Looks like a lot of playing around and with the speed of my computer, i think it would probably be easier just letting the radiosity render go overnight. Might give it a go later though.

Any other tips/helpful hints/suggestions/tutorials out there?

Thanks in advance!

~Halogen

[Peoples]

If you decide to go w/ the composite which is IMO the most rewarding but also the most difficult - this is the best tutorial so far on compositing HDR + car in C4D:

http://www.cgtalk.com/showthread.php?s=&threadid=54191&highlight=chevy

It's not very clear, the language is pretty rough but I managed to follow it out and I'm not a native speaker - but the chevy composite looks very good. I've mailed the author about a complete tutorial (he mentions it in that thread) - but we'll have to wait and see. I'm rendering a car composite as we speak with this technology and so far it looks pretty damn good!

[Halogen]

hey thanks Peoples. I was reading that earlier today, might actually give it a try. Link us to the results of your render, i would be interested to see the results :)!

[Peoples]

This is a crappy jpeg - and the car doesn't fit very well, I used a homemade HDRI from that same place where the BG is taken. You can actually see those crome balls they have here - they're real and excellent for some homemade hdri's! I just have to tweak the car's material to get it fit in the scene better - and of course up the radiosity settings.

But the fake floor did it's job very jood I think - just follow the tips in that thread!

[Halogen]

your results great. I dont really understand the steps though. It sorta confuses me. Perhaps you could summarise how to implement it for me? if so i would be extremely helpful.

[Peoples]

Well - basically:

I had a normal jpeg picture as the background I wanted to put the car in (no mirrorball etc. - I just took a shot of the place I wanted my car to be). Then you need a HDRimage for the lightning and reflection.

I had a sky object with the hdri material applied to it and a compositing tag on it with only seen by rays and GI checked.

I placed a background object in my scene and applied a material with my bgpic in the color channel to it. It should automatically be frontal-projected. Then I placed a disc where the floor should be and made it big enough to "catch" a shadow. For the disc (floor) material:

Color: the same picture as in the bg
Alpha: SLA projector with bhodiNut gradient set to 2D circular going from white->black
Set the projectors mode to flat, and size and rotation fields: make a new material (the default), apply it flat to the disc, rotate it so that it is flat on the disc-> choose fit to object from object manager. Copy the textures size and rotation digits on paper and open the projector again -> set the same numbers in the projectors size and rotation fields.

The discs material should also be frontal projected when applied to the disc.

Set this disc material's saturation to 0% in the materials illumination tab. You might also uncheck the generate GI - and also from your cars paint shader too (generate GI). Give the disc a compositing tag - and untick cast shadows.

Thats it!

THESE INSTRUCTIONS ARE FROM THIS THREAD - I DID NOT INVENT THE TECHNIQUE!

http://www.cgtalk.com/showthread.php?s=&threadid=54191&highlight=chevy

[Halogen]

Thanks a heap man :) Ill give it a go.

~Halogen

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.