SubD examples and models
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@pilou said:
@unknownuser said:
this is because the QFT OBJ importer will ensure non-planar quads are created as QuadFaceTools quads
Sorry I don't see "Import OBJ" on the menus of QuadFaceTools(0.9.1 & 0.9.2) ?
Only "Export" ! (SU Make 2016 2015)Ah, yea, the docs probably don't mention this at all, but it's listed among the other importers:
File > Import
The only reason the exporter isn't among the other exporter is that the API is lacking the interface. Them guys over at SketchUp should fix that! ...oh wait...
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@box said:
I've never ventured much into the realm of furniture making so as a first quick doodle I'm impressed by the ease with which I came up with something almost recognisable in less than 30 minutes fiddling. No doubt I could render it and make it look flash, but I love the raw topology.
It makes me very happy to hear that. My biggest concern with SUbD was how it relied on quad topology and I wasn't sure how well that requirement of workflow would be received in the realms on SketchUp.
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@hornoxx said:
Hi - to get any first experiences I did a little testing, mainly based on Cottys SubD_04 model above. I was interested on how an existing texture behaves to the SubD process - it's amazing how confidently and fast that works ...
Thanks for sharing that model - it's a nice study of geometry and texture.
At the moment SUbD use simple linear interpolation for the textures. However, I am working with integrating OpenSubdiv into a future release. That will give more options for textures; -
In fact all works fine!
It was half my fault! I was too confident of the first reading text!
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Tron!
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Glitch ?
SUbD finds internal faces and can't be apply! (Who don't exist)
(Artisan subdivides
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SUbD Catmull-Clark algorithm require the mesh to be a manifold or a surface without any forks. That model you have there have an edge with four faces connected - the algorithm cannot handle that. In another modelling package where the entities didn't merge you'd get away with it as you could have overlapping edges. But since SU merges entities at all times these types of scenarios becomes a challenge.
OpenSubdiv 3 supports internal faces - maybe it would be able to cope with this as well - I'm not sure. But that's still down the line in the road map.
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It would be handy if either SubD or Solid inspector could highlight these annoying joints. They can be a real headache to find manually sometimes.
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Solid Inspector used to complain about these - but because they where considered false positives in many cases it was changed to ignore them.
I do have ideas for an analytical tool for QFT that will visualize quads from triangles and ngons. Maybe it can lightlight forks as well...
By the way, I tried the model on an experimental build I have where I try to wire up OpenSubdiv and it seemed to be able to cope with it:
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THx for the explanation and the effort!
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@thomthom said:
I do have ideas for an analytical tool for QFT that will visualize quads from triangles and ngons.
please please auto-detect sausages ad donuts somewere i should have a "wishlist" i wrote with some examples included too..
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Another quick late night doodle just for fun and to help wrap my head around quads.
It's very quick and simple but everything is so easy to manipulate with the combination of QFT, VT and SubD.
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nice cotty loving this thread....I'll get involved soon
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@Box: nice plane!
@ olishea: be careful, it's contagious -
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got it, two are blue and two are red...
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not sure what you guys are trying to achieve with this kind of experiments?
what's the point with all those triangles?
is just for the sake of testing the algorithm itself or is such topology intended for something?
maybe 3dprinting
here is a children slide done with good old quads
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Going to show my ignorance
How do you go about drawing things like this with quads? Is there some place I can go to learn the process or do you just draw everything with straight lines?
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