I can’t upload any images to this forum so I can’t show what I’m talking about…
…but does anyone else find the default CAD tesselation settings to be really poor? Blends and fillets are not evenly tesselated, but very random, uneven and ugly looking. Sure, custom normals hides this, but it’s revealed through the sometimes rough silhouettes.
How do you even change the tesselation settings, as the defaults are very coarse? It should be very front and center, but I still managed to miss them.
Seems to work now:
The blue edges I’ve selected are the boundaries of the blend surfaces, and things really shouldn’t be as uneven and jumbled between them (and again, far, far to coarse default setting).
@EDRobert looks like you are using the Blender build from OV. what’s your ‘Scene Optimizer’ setting if you are using it at all? are you welding/decimating the mesh that could be producing an “optimized” mesh that’s not actually desirable for your use case in closeup?
also, which CAD program are you using to generate the initial mesh?
I used the Omniverse CAD Importer to import STEP files.
Blender is only used to confirm that the resulting model was too coarse to be useful.
ah, i see. thanks for clarifying. unfortunate, i don’t have experiences with the CAD converter extension, so i’ll let the devs/mods take this one.
Hi EDRobert. At this time, we do not offer any mesh refinement options on the STEP importer. Whilst it works very well for most uses, it does not allow the user to increase or decrease the meshing options. The best way is to use your step file in your DCC package of choice and then use our OV connector to export it out. This provides way more options.
I’m sorry but I don’t see how this can be true at all. Omniverse is the cutting edge of raytracing. Why would anyone want to use the state of the art with such crude models?
In your own marketing videos, you even say “unlike traditional renderers which are built on rasterisation, raytracing can support massive amounts of polygons” and yet you don’t have your non-changeable CAD import settings set to higher?
What I meant is that unless you are zooming into specific areas of detail on curved models, it works very well when set to its “medium” default. We have better import options on the roadmap. Then you will be able to set the mesh quality there and then. But as said, in the meantime, get the model looking great, the way you want in your DCC and then export and import it.
And yes it can handle an enormous amount of cad data and detail. We have entire factories brought in through Step files.
Great to hear about it being on the roadmap!
Just a bit of disclosure… the entire premise of implementing Omniverse in our workflow at the company where I work was that industrial designers would be able to do quick renders of their CAD data themselves (essentially replacing Keyshot) and that the media people could then continue on from those models (something Keyshot is not really suited for).
Sure that is a great workflow. What time of industrial design are you focusing on ?
We’re one of our country’s largest design firms so we do pretty much everything (although it’s a small country so we’re not that big). But we also have two boat brands in our group so that may become a focus with Omniverse… we’re still evaluating it (moving from Unreal and Keyshot).
