[AST] 2012 BMW 3er

#1
Hey Everyone....

i'm back into modelling with something a little bit trickier than the Audi this time : A bimmer. I've been working on it since the beginning of 2013 (!), showing some progress on my blog, but as it was giving me hard time with the side, I let it down many times. Today is something i can really call a start.

edit : and i can't upload any pictures anymore (upload button not visible...)..... WTF ??
 
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helicase

Well-Known Member
#2
Hey Everyone....

i'm back into modelling with something a little bit trickier than the Audi this time : A bimmer. I've been working on it since the beginning of 2013 (!), showing some progress on my blog, but as it was giving me hard time with the side, I let it down many times. Today is something i can really call a start.

edit : and i can't upload any pictures anymore (upload button not visible...)..... WTF ??
Mine is messed up too! I checked your your blog, i think it's an awesome start, i can't wait to see how you do the front, should be cool. It's interesting to me how you start with the side/roof first, maybe i should try that. It could simplify things...
 
#7
Thx guys. Duron I don't know yet. Actually, sorry I didn't say in the first place, i'm using a scanned mesh as a base. This is kind of Class A job in a way. So first the basic version, then maybe M version or Motorsport package, i'm even thinking of doing a M3 touring (to create something new just like the RS5 Sportback).
 

helicase

Well-Known Member
#8
Thx guys. Duron I don't know yet. Actually, sorry I didn't say in the first place, i'm using a scanned mesh as a base. This is kind of Class A job in a way. So first the basic version, then maybe M version or Motorsport package, i'm even thinking of doing a M3 touring (to create something new just like the RS5 Sportback).
Do you find it more challenging to use mesh / scan data?
 
#10
hehe thanks. Helicase, working with scan data is supposed to be easier. To get the right reflections. I'm doing cross sections and matching my curve network on it. Then, going class A mean that i need to be G2 on all boundaries, and that i need to be as close to the scan as possible everywhere (less than 0.1 or 0.5 mm for example)
In my job, we need a team of 5 to 10 guys during 5 weeks to build a full exterior class A model of a scan..... so if i'm doing it by myself only in my free time, it might take some time !
 
#11
Wow that accuracy level based off a scan is very very high! Especially if you need nurbs surfaces too!

I'm surprised that a scanner can even be that accurate to allow 0.1mm accuracy hehe :)


I'm surprised that anyone who needs the model that accurate isn't affiliated with the OEM enough to simply get that data direct from the manufacturer or one of their associated partners!?

Given those man-hour numbers these exterior meshes must be costing £25,000 > £50,000 each from an end user total cost POV... eeek!


Thanks

Dave
 
#12
whippy, i didn't make myself clear enough. The scan data is just a mesh done by photometric analysis. it's available on a benchmark website (A2mac1.com) who is scanning, cutting, analyzing everything from BIW to electronics etc.....
the scan data is worth a day of work with one guy (with his machine :p).
the five weeks and 5 to10 guys team is working on the Alias Nurbs reconstruction based on this scan. The kind of work i'm doing right now with the bmw 3er.
 

helicase

Well-Known Member
#13
whippy, i didn't make myself clear enough. The scan data is just a mesh done by photometric analysis. it's available on a benchmark website (A2mac1.com) who is scanning, cutting, analyzing everything from BIW to electronics etc.....
the scan data is worth a day of work with one guy (with his machine :p).
the five weeks and 5 to10 guys team is working on the Alias Nurbs reconstruction based on this scan. The kind of work i'm doing right now with the bmw 3er.
Awesome info RainKnight!, very interesting. I know you said using 3D references makes things easier, but do you add more patches and CV's now that you are trying to match within that tolerance? I think it's cool how you can do surfacing for fun in your spare time too and still enjoy it. When you get more of the primary surfaces could you share the CV structure? I always get good ideas seeing them. It's ok if some are trimmed or w/e. I can't wait to see the front!
 
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helicase

Well-Known Member
#15
slow progress.....as foresaid, bimmer are complex.... specially this area above the rearlight....
not totally high quality now. need to close every thing including the rearlight itself and lower bumper before checking everything....
wow that's so cool! Can you show one too without the patch lines? Awesome work! Very inspirational. What curvature tolerance are you modeling to? the default? Do you ever struggle with difficult areas where you can't make it smooth?
 
#17
That Alias showroom shader is my favourite shader out of all the 3d programs I've tried, I used to get mesmerized by it when I panned across surface creases and fillets, I'd waste so much time doing that.

Can't wait to watch your progress with the car. Amazing model already.
 

dave_3d

Super Moderator
#19
I have no experience of working with nurb surfaces, but that rear area was tricky enough using polygons. It is very similar to the 4 series.

Looks lovely and clean.

Dave
 

helicase

Well-Known Member
#20
Wow that's a ton of progress, can you show it with out the edges? I still look at your CV structure sometimes from your audi, if you could share that with this project too that would help a ton. You are awesome at modeling and rendering, i'm sure this will be amazing.