POV-Ray : Newsgroups : povray.binaries.images : Viking Ship (WIP) : Re: Viking Ship (WIP) Server Time
2 Aug 2024 22:19:15 EDT (-0400)
  Re: Viking Ship (WIP)  
From: Dave Blandston
Date: 12 Feb 2007 19:25:01
Message: <web.45d10476231482728bf1dde90@news.povray.org>
Thanks for the compliments and encouragement! This is a difficult object for
me so it's great to hear your kind opinions!

Oops, I should have mentioned - the ship is CSG. I tried using Wings3D but
wasn't able to get good results (due to my own inexperience). The hull is
made of 800 segments that are individually scaled then rotated and
translated into position. More segments will give a smoother shape, but
longer rendering time. I'll wait for the final to increase the number of
segments. One benefit of using CSG is that each plank can be individually
textured.

Anyway, the odd bump seems to occur at the point where the hull begins to
curve upward. I think the problem is that the vertical scale of the hull
doesn't decrease fast enough at that point to make up for the vertical
rise, creating the hump. I don't think it has anything to do with the
narrowing of the width of the hull because that's determined by a
mathematical formula which is applied along the entire length of the ship.
It's tricky because no matter how gradually I introduce the vertical
curvature, the bump appears. Maybe some experimentation and a different
technique will solve the problem...


That's very exciting that you are able to go see some real ships! I have
found enough pictures to show most of the details of the ships, though.
Also, there is a ship called the Gaia which is a modern replica of the
Gokstad ship. There are lots of pictures of that ship, which are very
usefull because the rigging is in place.


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