normal at forefoot

[rhiemstra]

Hello,

if I import a design wrawn in fastship or freeship to rhino, I have a bad normal
at the forefoot. this has consequenses when I offset my surface to form a solid.

anybody know how to counter this?

[Steve Baer]

Do you have a sample that I can look at to help?
Thanks,
-Steve

[rhiemstra]

Thanks for the reply steve! you are the only one.

I have added a rhino file.

You can see that the normal at the forefoot isn'nt what it is supposed to be. You will see the result if you offset the surface to make a solid.
Also after ofsetting the surface, I want to mirror the solid. so I have to split it at the x-z plane. but this does not work. I think this is because the discontinuity at the forefoot, although I have used corner wrap with fastship.

best regards,

René Hiemstra

[Steve Baer]

Hi Rene,
Yep it looks like something we need to fix in Rhino. I've added this to our bug list.

Sorry, but I don't have a good fix for this case at the moment.

Thanks,
-Steve

[rhiemstra]

Hello Steve,

Thanks for the reply. I'll hope to see it in Rhino 4. Do you have an idea when it is coming out?

Thanks for your help

Best regards René Hiemstra

[Steve Baer]

Hi Rene,
Rhino 4 should be out very soon. We are in the final stages of producing an initial release. This bug will not be fixed in the initial release, but it is on the list for developers to look at for service release 1.

Thanks,
-Steve

[Mikey]

Steve, good to see that we have a Rhino developer on the forum

You don't happen to know if RhinoMarine retrims between each angle of heel when doing stability calcs, do you?

There is quite a difference in rightening moment say at 65 degrees for these 2 cases;
1) Boat trims nose down by 3 degrees but Rhino uses the original state
2) Boat trims nose down by 3 degrees and Rhino retirms and use the current state for that degree of angle

Just want to confirm

Mikey

[Steve Baer]

Hi Mikey,
McNeel doesn't actually develop RhinoMarine. The guys at Proteus (same guys who write FastShip) write the RhinoMarine plug-in. We work close with them and they are very friendly. I'm sure if you send them this question, they could provide a helpful answer.
http://www.rhinomarine3d.com/support.htm
Thanks,
-Steve