Model Component Cleaning
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I have downloaded couple of models in 3ds dxf and dwg format. I'm facing couple of issues in importing and modifying them in sketchup.
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Distortion of Geometry: I have tried couple of suggestions posted here (i.e. higher viewres for dwg and dxf / merginf co planer option/ increasing scale etc.) but none seem to be working. Although I was able to use some models with less distortion and correcting them with weld Ruby.
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Conversion of low poly to High poly: There is a problem specially with rounded surfaces (i.e. tubes or pipes) is there a way of increasing segments and making them decent enough for rendering?
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Reducing file size: I want to reduce the file size of some of the models. I have been using cleanup ruby along with purge command. Is there any other way to further reduce the size without the loss of model geometry?
I'm attaching one model as an example.
P.S. I have Autocad LT 2006 on my system.SKP File: http://rapidshare.com/files/323009819/Bokka_Kundalini_Karim_Rashid.skp
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Rapidshare didn't have any vacant slots, so I couldn't check out the model...but I'm assuming by the size, that you want it reduced. I can't really think that after cleanup and purge it's possible to further reduce the model without actually abbreviating the geometry. If you want to go down this route in SU...and don't have an external polyreduction program...you might want to try Dale's Polyreducer script. http://forums.sketchucation.com/viewtopic.php?f=323&t=9789&hilit=+Plugin
It may take quite some time on large models.
I've also found that, on occasion, exporting a file out to 3ds then bringing it back in again with Merge Coplanar Faces checked will get rid of more geometery than the cleanup script. A recent file I worked on for a client reduced from 3000 faces to 2100 with cleanup, but went all the way down to 1500 by exporting/re-importing. I don't think this is any failing in Thom's script...I couldn't get rid of any more diagonals without faces disappearing (after cleanup). What I suspect might be happening by exporting to 3ds is that rounding-down errors might result in a few more faces ending up coplanar than was the case before.
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Not sure about this one. What kind of surface is it in ACAD?
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This point contradicts point 3 - you want to smooth out a mesh to a higher polygon mesh - but at the same time reduce the file size? Only way to hope for smaller size, is if you have a large number of co-planar edges - which is rare with organic shapes like the one in your posted image.
Is the file size a big problem for you? how large are the files you deal with?
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Try megaupload, Rapidshare has become rapidsuck lately.
I will run it through Deep exploration if I can get to it.
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Thanks Alan, I'll try your exporting re importing suggestion.
@thomthom: Thanks for your suggestion. well, some models come in low poly acad, dxf format which needs to be converted in to high poly ones. by high poly i mean at least have parts like pipe tube having around 12 segments. downloaded 3ds models are usually very high poly having more details than i required (especially furniture like sofa). Hence i was seeking both solutions.
@ solo: Thanks for the offer. here is the link of megaupload
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