Twilight Render - Challenge

ntxdave · 4 Mar 2016, 21:38

I am trying to learn how to use Twilight Hobby correctly.

One of the problems I have had is with glass. So, I am issuing a challenge:

Draw a glass object (bottle, glass or both) that is partially full (see sample below)
Render it with Twilight render (Hobby or Pro)
Share your settings, tips and/or tricks for accomplishing the task so that I, and others, can learn how to use Twilight more properly.

pilou · 4 Mar 2016, 23:13

By Massimo With Twilight of course!

ntxdave · 4 Mar 2016, 23:47

Thanks Pilou. I can draw the glass although it is nice to see these instructions which I will study.

My biggest problem is with the rendering. I cannot get the color or transparency to work correctly for me. That is why I ask for the Twilight settings for the glass. Not doing well in that part at tall.

Box · 5 Mar 2016, 06:38

Here's a very quick one.
Background is a flat bottomed bowl, painted with snow, set to Plastic/Satin.
Glass is translucent glass grey with all the colour edited out, set to Glass/Common.
Top surface of the wine is Maroon with it's opacity dropped to 11, set as Glass/Common
The body of the wine is Firebrick opacity also dropped to 11, Set to Liquid/Water

Then rendered with preset .04 Medium with the environment setting a shown.
There is a great deal of room for improvement of this, but just giving you the exact settings as they are.

ntxdave · 5 Mar 2016, 15:19

Thanks Box - that is the type of feedback I was hoping for. However, I have a question:

@box said:

Glass is translucent glass grey with all the colour edited out, set to Glass/Common.

Where/how did you edit out the color?

Box · 5 Mar 2016, 15:22

That was the last thing I thought you would ask.
The materials editor of sketchup, select the material and hit the edit tab.
Then you can change the colour and how transparent it is.

ntxdave · 5 Mar 2016, 15:28

@box said:

That was the last thing I thought you would ask.
The materials editor of sketchup, select the material and hit the edit tab.
Then you can change the colour and how transparent it is.

That is what I thought but I was making sure.

When I go try to do it myself, there will probably be more. Stay tuned

My next guess is that I will have problems with the body of the wine.........

ntxdave · 6 Mar 2016, 16:41

I took an existing model (not a good one) that I had had problems with before and tried some of the things Box had pointed out. Well, I got the glass showing up the way I wanted it but the background is a mess. Here is the render I created and a screen shot of all of the Twilight settings.

Notice how the background is a mess. I also tried a single background color and it did not come out correctly either. In particular, notice the grainy top portion of the background.
I have not even tried putting anything other that the silly objects inside the glass.

Here are the Twilight settings (notice there are no lights in the model).

Welcome all suggestions on how to get the background to come out right/better. I am satisfied that I now understand how to control the glass itself. Thanks Box you gave me the tips..........

I have attached the skp file as well.........

SillySample.skp

hvanessen · 6 Mar 2016, 18:32

a quick test with a different background

hvanessen · 6 Mar 2016, 18:42

and the one on a wooden floor

ntxdave · 6 Mar 2016, 18:49

@hvanessen said:

and the one on a wooden floor

I tried a of floor too but did not get it to work right either. Would you mind sharing you background info and the various settings?

ntxdave · 7 Mar 2016, 18:10

Well - I finally made some progress.

Here is latest effort:

Now off to go back to the original challenge and draw the glass (and maybe a bottle) with liquid content.

Rich O Brien · 7 Mar 2016, 20:51

at bigmanwashes they certainly have some big ass glasses!

ntxdave · 7 Mar 2016, 21:19

@rich o brien said:

at bigmanwashes they certainly have some big ass glasses!

Not big glasses, just small blowers

JGA · 8 Mar 2016, 16:36

Is your background just an HDR image, rather than a physical plane?

ntxdave · 8 Mar 2016, 17:56

@jga said:

Is your background just an HDR image, rather than a physical plane?

In this particular case, yes.

ntxdave · 9 Mar 2016, 00:21

My latest endeavor.......

Still not exactly what I want but getting closer.

pilou · 9 Mar 2016, 00:28

It's a funny result!

ntxdave · 9 Mar 2016, 01:26

@pilou said:

It's a funny result!

Yep, it sure is.

tuna1957 · 14 Mar 2016, 04:19

Dave C. , Stumbled across your post today. Twilight user also and you peaked my curiosity. Never have done the
glass of wine business so figured why not. Built and textured my glass like Massimo shows ( thanks
for posting that Pilou ! ) .Below I've listed how I set things up.

Materials , Wine Glass - Snow , TW - glass / common
Top of wine - Indian Red 12% opacity , TW - glass / water
Side of wine - Fire Brick 12% opacity , TW - glass / water
Backdrop - Cool Grey #4 , TW - paint / eggshell

TW render preset - 08 Exterior Daytime Progressive

TW Sun Settings - Physical Sky , Brightness - .800 , Haze - 20% , Sun Strength - 3.0
Gave the sun a very light yellow color. all other settings left at default levels.

Let the render run for 100 passes. It took about 19 minutes. Probably as good as it will get with this setup. Need to
try some shots in an interior studio setup. Better chance of playing with lighting and use some other objects for
reflections and such. Good luck and just keep working with TW you'll get better with practice. Thanks for the kick to
do something a little different with SU & TW than I usually do. It was a nice change of pace.