Please look at the pic … There are multiple hard transitions that must all blend forward (no humps) to a smooth shape. I am curious to hear how some of you would approach this model. I have a scanned model by the way and am re-drawing this to give them a smooth, clean, fair file. Thank you
This may be helpful:
Hi Tom - best to post what you have so far if you can.
-Pascal
Pascal, I started few times - deleted… got frustrated
I was hoping to get some general ideas on method of forming this in general as I do not claim to be expert at Rhino- Im not bad but this is pushing my boundries
The Level 2 Classroom Training Guide includes tutorials on blending creased surfaces into smooth transitions.
Ha Ha , No one wants to touch this one LOL =) Come on guys !!
Hi Tom, why don’t you send the scanned model you have?
Hi Tom - it is vastly more work and less certainty to try to reproduce what it looks like, maybe you might be working from in the file that you sent an image of, than to have a Rhino file with some inputs in place at the very least.
-Pascal
Hi kayakguy,
I would like to have a go. Upload the data you have.
ED77
“Ha Ha , No one wants to touch this one LOL =) Come on guys !!”
(1) Strange response seeing as John has posted the exact info you require (in both posts) to model this kind of thing.
(2) 3 people have asked you to upload either what you have so far or the scan and you’ve ignored their requests. If you don’t want to do this because you think it’s something special that you don’t want others to get hold of, then simply say so. It’s easy to do. These people are trying to help you.
Where do I upload file ??
Click on the short arrow icon above where you type your post, and follow the instructions.
Its a Rhino file ??
I uploaded to Google Drive - LINK
https://drive.google.com/open?id=0B_iYNirRq2SpOW5fZHNrTkhDaDA
The file is a scan of a Ka project for a friend- the scan was of a plastic kayak and is VERY unfair, hence why the scanned image is. I am duplicating the hull but re-designing the upper topsides of hull, and top, or deck. I do not draw for a living, I use Rhino as another tool in the box. Being a perfectionist, this has made me want tp pursue the best solution in technique / process to form this surface. I have always used a program called Maxsurf (which I have) to design small hulls, but I wanted to do this totally in Rhino, but got stumped tring to make this where I was happy with it…
So here I am… just so everyone understands
Anyone look at it ???
Hi Tom - yes, I have your file - I’ll try to say something useful shortly…
For those transitions, what I see is that the surface directions on the fore and aft ends of that area are not working together very well - the transition can be smoother than what you have - a BlendSrf for example works OK - but the input surfaces dictate that the transition will reverse in curvature.
Moving the trim on the forward surface forward an inch or so helps keep that transition all convex, without the return, which I am assuming you do not want…
-Pascal
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I DID NOT create that file… It is TOTALLY unfair surface- It is a file that I imported in from a scan. I was asked to re-draw it from scratch to make it clean, modifiable and fair in Rhino- Think of the file and problem like "Reverse Engineering"
That may clarify
Ah, well, that is an entire project… As a start, I would draw the long lines that are at the breaks between the ‘steps’ in the hull. That is hard because the lines are softened and ideally you’d get the hard line where those surfaces would intersect. In this case you can get a start by un-trimming the surfaces (Untrim) and then running Intersect on adjacent surfaces - you’ll cet a curve that can be used as a good guide for drawing a new clean curve to surface from. As is the curves are messy, you will need to make new ones but this will give you a good start as to where and how they should go.
-Pascal