If this is a known thing, and has already been discussed to death, months or years ago, just tell me shut up and please point me in the direction of the knowledge I seek.
Has anyone noticed any trouble with the Shell modifier in Max and VRay glass type shaders?
Specifically, glass objects that are using the shell modifier for “wall thickness” that look strange when rendered. It looks like something goofy with the normals, yet they appear to be facing the right direction in the viewport. Should I not be using “Shell” to model the thickness of surfaces if they are to be made of glass? For example, a bottle, jar, cup, etc.
Thanks for the welcome. I will get some images together. The model is just a basic glass bottle as kind of an experiment. I made one with a “rounded body” using the Lathe modifier and it came out fine. But this one has a “rectangular body” and uses Shell on an editable poly object.
make sure you check “straighten corners” in the shell mod: it has a tendency to “cut” corners, especially with right angled faces, if you do not.
Also, make sure double sidedness is off for your glass, unless you want internal reflections (which may lead to artifacts when set too low).
But please do post images, so we can lay our fingers all over them
First of all, let me say that you guys rock!!! The fact that with minutes of posting my issue, multiple people are offering their help is amazing to me.
I just registered at ImageShack and below is a link. Don’t make too much fun of my simple model, as I am somewhat of a noob when it comes to 3D -- especially compared to the rest of you serious 3D animals in here.
It almost seems to me that the “walls” are one sided or something. Or am I crazy, and it is just because the surfaces are so flat??
It occured to me that the angle of the image I originally posted may not be the most useful angle. Here is another angle that makes it look even worse…so I got that goin for me which is good. (Fletch)
Worse angle image
Also there is this image which shows the “red exit color”
And this image which shows the original (LEFT) and “red exit” (RIGHT).
Thanks again for the input and help -- I sincerely appreciate it.
Drop an STL check on the mesh and tick check errors and see if it has any errors. If not delete the mod if it does then well.. the mesh has errors.. hehe…ahhh
Care to post the mesh perhaps… email it to me maybe? It does look kinda of odd, but that could just tbe the reflection environment, reflection depth, or even the mesh.
I used “STL Check” on the model and it came back with no errors. I have never used STL Check before…that was cool.
I would be delighted to send you the file…are you sure? I don’t want to be a pain in your neck though.
It is possible that the “flatness” of the surfaces is contributing to the wierdness of it.
James
PS - To StudioDIM: If you are still out there, you may get a kick out of this…I went to my mother’s house for dinner tonight and she sent me home with a large plate of eggplant parmigiana. I am about to eat a huge sandwich…mmmm…cooked with love.
Yap. There’s smth with shell modifier (a friend of mine made me say wow, when shelling car glass mesh made smth weird with refraction). Can you post the scene, so I will check it in max9 ? As I got strange feeling it will be fine there.
Yeah you can send it thru to my email.. just click on the email button below my post.
Or if you prefer you can post it here so others can check it out as well.
Your call.
Have you tried just cranking up the max depth for the refraction? to say 50.
I would have no problem posting it for everyone to look at, especially if it may help others.
We won’t have any trouble as long as you guys don’t make fun of my modeling skills which I’m sure aren’t perfect, as I am a self taught noob when it comes to the “3D aspect” of production. (he he he) ;-0
How can I post the file here?
Are there always a bunch of people online helping each other here? As I said earlier, I am a new VRay user and still unfamilliar with the VRay community.
hahaha nah no one will make fun of your modelling skills… heck we all started noobish at the beginning anyway
Yeah you will need to host the file somewhere, so rapidshare.de is probabaly the best bet.
Yeah there is always people on the forum, most of whom are very helpfull. So if you have any questions dont hesitate to post, but just do a quick search before you do as your question may have already been answered
p.s. heading home for dinner now. So will post back in an hour or so.
