Rebulit command (matching Isocurve issue)(Rhino)

![rebuilt%20match|690x260](up

load://rQVq6PPJ3paIhu7JrTtq47M9kAr.png)

I have a trouble in matching these isocurve lines as seen in my hull photo…how to match it.so that the hull below in photo made from 5 surfaces ( through (Surf from 2, 3 or 4 edge tool)) can have same Isocurve lines???

Hello - I think you are working much to hard here - it looks like the side of your boat can probably (probably) be made from one simpler surface. Can you post the curves?

-Pascal

hey thanks…right now i proceeded further…you can see my file and can tell me now its ok…or not??..cz now i think i a am able to match isocurve…i m breaking it in so many parts because of maxsurf trim problems, somebody told me to break in more parts, to avoid problem in exporting to maxsurf in later stage…(surf from 2 3 edge surf).3dm (6.0 MB)

Hello - here’s a quick try at illustrating what might be a way to work - the boat makers here, @davidcockey and @ivelin.peychev and others will have better input, but if you can redraw your messy very dense curves with clean new simple curves, a loft can make that whole side - the question always boils down to - how close do you need to be to the inputs? The inputs do not seem very clean to me in this case.
(surf from 2 3 edge surf)_PG.3dm (5.5 MB)

-Pascal

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Are you referring to me? I never said to break the surface. Maxsurf (depending on the version) might have problems with trimming, but if you build the surfaces there (which in this case I think you should) there won’t be many (if at all) problems if you do your job properly. If you’re doing this in Rhino @pascal is right you should do this with single loft surface.

Rebuilding surfaces is also bad idea, but anyways you might succeed.

I strongly suggest if you can - use Maxsurf for this boat, there you can merge/lock control points of different surfaces and if they have the same degree and number of control points these surfaces will be better than if you try to make them in Rhino. Not saying you cannot do this in Rhino, but MaxSurf was made for this, the UI and everything is dedicated to do that.

Another thing, I suggest if you MUST use Rhino, then sketch the curves to fit the pictures then transfer them to Grasshopper and continue editing points from there.

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What is the advantage of edit points using Grasshopper compared to using Rhino directly?

You keep track on many things right there in the canvas, you can create a cylindrical shape from nurb much easier if you know the exact values of coordinates and weight., if you attach a slider to boat station that controls all points from that station’s X coordinate, it is much easier than having to select all points and move them in Rhino.

Parametric modeling advantage is the why.

Another advantage is you can have hydrostatics right there while moving sliders, instead of launching additional commands.

It depends on what he needs.

If I need to create an exact cylindrical surface I use the appropriate Rhino command.

SetPt makes this simple in Rhino.

What do you use for hydrostatics in Grasshopper which gives real time results while moving sliders?

:slight_smile: Ok.

If you know ship hydrostatics you create the algorithm to do that and just copy it for the next boat.

First step for @tumulpurwar should be to rebuild the curves with many less control points. RebuildCrvNonuniform and FitCrv may be useful. Then I would use Sweep2 for the sides.

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That could be useful though after investing the time to create the hydrostatics algorithms.

Well, if you do this for a living, and you don’t have access to MaxSurf license, I strongly suggest you do that.

Something new appeared recently you can give it a try

I haven’t tested it, I don’t usually trust non-open source plugins for rhino/GH, even if they seem useful.

thankyou very much for your kind answer…No i am not referring to you…it was said by one of my collegue in my place…thankyou

ok…davidcockey…thankyou for suggestion

thankyou pascal

Hey ivelin.peychev & Pascal Golay…I am bound to design in rhino and than export it in maxsurf …and i tried designing it last night again and it failed in maxsurf again…i dont know grasshopper, so i dont want learn it right now…And i dont know , how to solve naked edge problem…i cant fix them up…its so crazy work…May i know can i only transfer sketch of hull to maxsurf and than put surfaces there??..Is it possible???
I am attaching my new file again…please check it and if you guys have Maxsurf so, please try to export it there and see too, why it getting messed up there…

Note: i am bound to work over this design, else i could have left this design and made it some less messy design.

itsfinal.igs (1.9 MB)

itsfinal.igs (1.9 MB)

When you’re given an advice, and you don’t follow the chance of failure is very very high. I told you do NOT break the surface into several parts (@pascal pascal did to, so has @davidcockey). I explained to you how to arrange the corner points and use loft, you didn’t do it.

Yes you can but not surfaces that are in this igs.

I’m sorry but you don’t know Rhino either. As I said in your other, other thread first learn Rhino. Learn the basics do several simple stuff before you move to modeling boats/ships.
When I was learning Rhino I build a football field, then I build the tribunes, then I created curved outer shell structure. Then several other weird shapes. And I still wasn’t able to model ships because of the hints I gave you I did not know them back then.

Take the advice and first learn Rhino. Then come here and ask questions about detail work. I told you everything you need to know. The next step would be to model the boat for you and I won’t do that.

Good luck.

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Thankyou ivelin.peychev for all the kind answers…well that model worked finally in Maxsurf few hour back without problem of trimming surfaces…but thankyou for all suggestions…i will sure work over my weak skills.