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"Redefining" Rhino features

"Redefining" Rhino features

"Redefining" Rhino features

(OP)
All,

I come from a Pro/E background, and recently downloaded the evaluation copy of Rhino.  Thus far I am impressed with what I have seen.  In evaluating the software, I was obviously bound to makde a couple of small errors, as is normal when trying out something unfamiliar.

My question is this, if a mistake has been made when creating a feature (selecting the wrong curves in sweep rail 1 surface for example) , is there any way to redefine the feature?  All I have been able to do is delete and recreate it.  

Granted, I have not spent a great deal of time with the software yet, but any advice would be appreciated.

Thanks in advance

RE: "Redefining" Rhino features

Tick,

Unfortunately the answer is NO.  RHino is not a parametric modelig package and therefore retains no realtionships other than contact and tangency.  If you goof on a surface you are forced to delete it and start over.  Once they care created they are as "dumb" as imported data.  This has its advantages as well as its disadvanteges.  You can delete a surface without losing all of the "child features", but you can not make changes and expect the part to update to meet them like a parametric model would.  You need to understand that Rhino is not feature based, and therefore retains no history for you to tweak.

Hope I didn't disappoint you too much.

Regards,
Jon
jgbena@yahoo.com

RE: "Redefining" Rhino features

Tick,
There is no type of feature definition in Rhino since as it is well explained by APPENG. But while designing you can easily undo the commands. You can also customize the depth of undo feature (behave as how many undo's you can make)via "Tools>Options>General tab". There are also some undo variants as UndoMultiple, Undo Selected. Help is quiet explanatory about this variants. I am also Proengineer, IDEAS and ME30 backgrounded (mostly on UX systems)and I am quiet happy with Rhino on Intel platform with some high amount of RAM (I have 512MB and PIII-550. it is mainly needed if you render complex surfaces)since about a year.

regards
Fatih GUNGEN  

RE: "Redefining" Rhino features

(OP)
Hey guys,

Thanks for the responses.  After I went through the tutorials I did found out that Rhino is not parametric.  I guess I still need some time to play around with it.  It can be a little frustrating when you are used to something else.  It seems to me that Rhino was designed with the AutoCAD user in mind, but that is just my opinion.

I am running it at home on my old PII - 333 with 256Mb Ram, and the only deficiency so far is when I render (takes forever!) but other than that little distraction, it performs great!

Here is another question, any other tutorials out there?  My interest is now peaked, and I am hungry for more.

Thanks

RE: "Redefining" Rhino features

Tick,
I mainly used Rhino to design couple of small yachts. Two of the designs have been realised (a 25ft Motorboat and a 27ft allround sailing yacht)succesfully. Final design: a 28ft cruiser-sailer catamaran ,which I designed for my self, is under construction. I found Rhino very satisfactory to obtain quiet fair surfaces for boat hull and superstructures(isn't it obvious when you concider that Rhino utilises NURBS math. forms in 2D and 3D objects). Also the analysing tools like Area moments and volume moments helped me great deal for further hydrostatic and structural strength calculations. Anyway I downloaded some tutorials in official McNeal web site dealing about Marine design, Surface fairing and some introductory that I presume helpfull. But I think best is start with designing simple shell entities out of different type of surfaces (that means jump to surface functions as fast as possible instead of dealing with lines). It really gives you a good idea of how to aproach a fulldesign using Rhino. I think understandig u-v directions of objects is very important to achieve total design consistency (Boolean algebra really uses them).

regards
Fatih GUNGEN  

RE: "Redefining" Rhino features

Here is a Point pulling car modeling tutorials I have Made...

(NEW tutorial) Medium advanced user
this is a forum with my tutorial written on it..

http://www.cgchat.com/board/showthr...?threadid=11953


_______________________________

Older version, same basic method.

Beginner 3.5mb zip file
http://market.renderosity.com/~rhin.../part_1_car.zip

another big zip
http://market.renderosity.com/~rhin.../part_2_car.zip

another big zip
http://market.renderosity.com/~rhin.../part_3_CAR.zip

Wyatt Turner Design:
Rhino/AutoCAD/3D Studio MAX/
______________________________
http://eighthdecay.tripod.com/
turnerwyatt@hotmail.com

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