Topics

1

[Max] I need help! / Mesh turn transparent in View port

« on: 2023-02-28, 18:18:57 »

Hey it's me again, I've been having this problem every time i assign a corona material to a mesh it goes transparent in the 3d view, only the outline is visible, I tried to ignore it as the parts render fine but now my scene is so big that its hard to distinguish what im looking at, tried inverting the normals but no luck.

its probably something simple but haven't been able to solve it.


It happens with all materials from the corona Library or even using physical materials with presets.
I've attached a photo to show what i mean.

2

[Max] I need help! / Bad geometry only in render

« on: 2023-02-09, 18:33:52 »

Hey, total noob here with corona and 3ds max.
I'm working for an automotive aftermarket part manufacturer, we recently switched to corona after seeing some impressive renders.

We used to used keyshot to do quick the renders and when approved we then built the molds, made the parts and then a photoshoot for a catalog.
My boss wants to skip all that, as he is convinced it's best to go digital and have better renders, check the market interest and then if there is a demand build the product.

So one of the big challenges we're facing right now is making the models work for rendering. We use a combination of 3d scans, Cad surfaces, and polygonal models. 3ds max doesn't really like Cad surface data.

We are importing the Cad as STP and letting 3ds max do the conversion to mesh, however it leaves un-welded vertex and some low resolution areas. TurboSmooth or mesh smooth don't really work here. The solution we came up was to import every component as a separate object, instead of an assembly. That way, we can control the poly density while importing the parts and making it more or less dense as needed. This method leaves an Ok looking mesh on the 3d viewport. But when rendered in corona, it shows some artifacts.

What would be the best approach to fix this or the better practices to work in these scenarios?

On the attached pics you can see the comparison between the render and the 3d view