Twilight Render - Challenge
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@jga said:
Is your background just an HDR image, rather than a physical plane?
In this particular case, yes.
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My latest endeavor.......
Still not exactly what I want but getting closer. -
It's a funny result!
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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 / eggshellTW 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.
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Very good, andere cheers
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Well, here is my latest try............
The wine does not really show up in the render but otherwise, it is acceptable.I have done a bunch of tries and just do not seem to get it right. I have also attached the SU file if anyone wants to take a look at tell me how to adjust it more properly.
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Dave, scale is important when trying to get accurate materials, the above is way too big, try reducing it to accurate size before rendering.
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@solo said:
Dave, scale is important when trying to get accurate materials, the above is way too big, try reducing it to accurate size before rendering.
I scaled the glass down to the correct size and rerendered using most of tuna1957's settings (not all).
Still does not match what it seems like everyone else is able to do. Either I am expecting too much or I just do not get it. I am failing miserable at this challenge.I am open to suggestions or if someone who has done this successfully would like to share your SU file (with Twilight settings) for me to study, I would really appreciate it.
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Dave, Take a deep breath and step away from the keyboard
On a serious note try not to get to frustrated.
I'm no expert at this either. I remember having days I wanted to jab pencils in my head sitting at my keyboard trying
figure this stuff out. I've been messing about and tweaking settings and such. Posting another pic of a "rocks glass". Was going to tweak on your model but I'm still working in SU2015. If you'd like I'll post my rocks glass model so you can get in and check out how the materials and sun is set up.
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is your index of refraction too high Dave? It looks like extremely thick glass (even though we know it is not)
keep going!! You'll nail it soon.
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@tuna1957 - Thanks for your reply. Yes, I would like for you to share your model. I think I am missing something very basic but I do not know what it is.
@olishea - Yes, the IOR setting for the glass was too high. I set it lower but I am still doing something very basic wrong.
I have another question for anyone looking at this that uses Twilight. When I use the template to set the texture of the liquid in the glass, SketchUp reverses the faces of the liquid group. Is that supposed to happen?
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Dave, I'll post the model next day or so. Haven't had the "faces" change when working in TW. I will say SU can get a little crazy with face orientation sometimes while I'm modeling. Never an issue when setting textures in TW ?
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@Alvis - I really like this. My favorite is #4 (counting from the right). I downloaded your model and will try to understand it. I got an error because it is missing the background image. The background in your images does not match what I am seeing in SU but that is probably related to the error in not finding the background image.
Now I would like to understand the differences in the settings between the 4 images you posted. The only way I got the wine to show up with any red in the glass (in my image - not yours) was to go to an external render and then I lost the wine color in the shadow.
Just to let everyone know I have not completely given up, here is my latest attempt.
OK - One big thing I learned in this was that I was not paying attention to the shadow settings in SU because I never use them in the work I do. That helped a lot. Still a lot of experimenting to get this far. What bothers me most is not necessarily that the image is not the greatest in the world but rather that I do not seem to be picking up on some of the elementary things needed to do good rendering.
In another thread I did try some building renders with section cuts and hiding some walls but doing something like this wine glass is totally throwing me off. http://sketchucation.com/forums/viewtopic.php?f=15%26amp;t=64285
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Dave , Posting the "rocks glass" model. You'll be able to check out materials and sun settings I used . It's a simple set up but gives a nice render on easy low through easy medium+ . Have one scene set up. Hope it's helpful.
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@tuna1957 - Thanks for sharing. I think I have learned a couple of things in this but I am still doing something wrong. A couple of things I noticed though is that you have a custom preset and you have a template that I do not have. I saw Glass::Water. I do not have that in my settings......
I took my glass and pasted it into your skp file and then tried to set my glass like yours but there is still something wrong. I cannot see the color of the wine properly though my glass (I emulated your settings for my glass).
I am also attaching the SU file that has both of our glasses in it. Maybe you can figure out what the heck I am messing up.
rocks glass dave c dave.skp -
Dave the stem looks nice. Not sure what is happening in the base. (also not sure what vessel you are working on / talking about). DL'd the file. Later.
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Dave , Here's your fixed model back. Most of your problems were in the model itself. Biggest issue was your glass and your wine were each in separate groups and the wine didn't line up with the inside surface of the glass. When you move the wine shape back inside the glass, once it's lined up proper you explode the group and then intersect the faces. What you ended up with was 3 layers of glass were you should only have 2. Also had stray geometry between
the glass layers that needed erased. Unsoftened the outside rim of the glass. It was causing weird artifacts in the render. I think if 2 faces get real close together it makes the render engine a little crazy. If you want a rounded rim draw it in when your making your template, don't try and get it just by soft & smooth. Redrew the top of the base, you were missing a bunch of faces were the stem and base meet.Last but not least you had a lot of back faces were you should have had front faces. I changed the color of the wine in both just cause I felt like it. Didn't change anything in Twilight. You should be able to plug and play and get a nice result. Also will post render. 05 - medium+ , took 49 seconds.
Almost forgot , one more thing. You should increase your segment count when you draw your circles. Things will look a lot smoother. FYI the rocks glass was drawn with 64 segments.
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ooops..... Forgot something. If your wondering why the saved renders look a little dark around the edges. I had been fooling about with the post pro settings in the rocks glass model and forgot to turn them off before posting the model.
If you want to see the raw render click on post pro ( lower right corner ) in Twilight window and deselect vignette and your renders will look more like the original post of the rocks glass image. sorry....... me bad..........
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