surface normals hull structure extrude curve problem

Salut,

I have a problem with my little boat project. I draw the isocurves on the hull and now I want to extrude them to the surface normals, the 90° to the surface at a specific point, in this case the iso curves. At position 14 it is doing it 3 times and I am not sure if this are overall the 90° to the surface, or am i wrong? Does someone have a more elegant or a better way doing this?

Thanks for any help and hints!!

Replies to This Discussion

Permalink Reply by Danny Boyes on May 14, 2012 at 6:04am

You are supplying more vectors than curves. Hence the extra 2 at the end. But also your curves are shifted 1 place to your vectors: Curves 1 to 14 vectors 0 to 15.

This is because you are taking the Normals from the original UV locations and the Curves are being selected in a List Item component.

Permalink Reply by Danny Boyes on May 14, 2012 at 6:08am

Your second Image shows the result of only sampling the Surface at the Stern where the normal is different. If you want to change the angle along the length of the Long. then you would have to sample it at each frame and create an SDL line to create Sections for a Sweep1Rail component. ISO Curve = RAIL and SDLs = SECTIONS

Permalink Reply by Sebastian L. on May 14, 2012 at 7:02am

Hey, thanks for your reply, I am not sure if I get it correctly, it is very complicate for me, ... I allowed me to attach my files. I tried it with the SDL line. I used the contour component instead. Well at the moment it doesn't work for me. Maybe you can give it a shot? That would be really helpfull cause my teacher uses a really strange way for doing this manually, ... :)

Permalink Reply by Danny Boyes on May 14, 2012 at 7:08am

Hi Sebastian,

The Ning Social Network website doesn't let you access RAR files, would re-post them as ZIP.

Permalink Reply by Sebastian L. on May 14, 2012 at 7:12am

oh, ok! thanks for the hint!

Attachments:

SL_boat_1.zip, 1.1 MB

Permalink Reply by Danny Boyes on May 14, 2012 at 7:26am

Something like this

Attachments:

SL_Sparren_Boat_SDL.gh, 22 KB

Permalink Reply by Sebastian L. on May 14, 2012 at 8:24am

Aah cool, this looks and works great and is more comprehensible to me! Now I have to figure out how to extend them until STERN and BOW. I noticed, if I change the shift list integer I come closer to the edge but not completely, is there a way handling this? Or is it to much effort? see attached pic, same in the stern area. Thanks for your help! :)

Permalink Reply by Danny Boyes on May 14, 2012 at 8:57am

The Best method would be to prefix the Transom Curve and append a Bow Profile Curve to the list of Sections. The Bow profile would need to start in front of your last section (i.e. X+ not same X)

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