Tim,
Great job. I like the wood texture too. According to a book I have at home
(Steele's Elements of Naval Architecture), most of the bolts holding the
planking to the frames would have been made of wood (oak was a favorite).
These "treenails" are typically 1.5" to 2" in diameter and may have been
rounded off where they poked through the interior of the hull. The reason
for the wood was that iron was expensive and it was also very dangerous
should a cannon ball knock the head off of the bolt and sent it flying into
the crew.
What a fantastic project. Keep up the good work.

Chris Holtorf


"Tim McMurdo" <jod### [at] wohrrcom> wrote:
> This post could be subtitled "Fun with trace"
>
> The hull of the ship is made of bezier patches created in Hamapatch when I
> first started to learn POV. I scaled two copies of the hull differently to
> create the inner and outer surfaces of the hull. At the time I had no clue
> how to fill the space between the two hull surfaces where the gun ports and
> sweep ports were cut through the bezier patches, so I just scaled 10 more
> copies of the hull and placed them between the outer and inner hulls. It
> worked from a distance, but was not a good solution when viewed close up.
>
> I recently noticed in my online research that ships of the period had bolts
> or rivets holding the planks to the ships frame timbers on the interior of
> theship. I decided to use the trace function to place them (scaled
> spheres). Epiphany! I could use the same process to locate points on the
> inner and outer hulls and use these points as vertexes for triangles. The
> triangles could then be used to cover the gap between the inner and outer
> hulls.
>
> I think it works rather nicely! I used enough triangles to smoothely conform
> to the curved hull.
>
> The second proud moment of the day was creating a texture that would give
> the smooth bezier patches the look and feel of 3 dimensional planks. Here
> is that texture for anybody that is interested.
>
> #declare ShipGreen = <0.17,0.29,0.17>*0.5;
> #declare ShipTan = <0.85,0.5,0.2>*0.8;
> #declare ShipBlack = <0.05,0.05,0.05>;
> #declare ShipGold =0.95*Gold;
> #declare ShipRed =0.7*Scarlet;
>
>
>
> #declare GreenPlanks2 =
>         texture{
>                 pigment{
>                         bozo
>                         color_map {
>                                 [0.00 color rgb 1.0*ShipGreen]
>                                 [0.47 color rgb 0.99*ShipGreen]
>                                 [0.475 color rgb ShipTan]
>
>                                 [0.48  color rgb 0.85*ShipGreen]
>                                 [0.5 color rgb 0.85*ShipGreen]
>                                 [0.52 color rgb 1.1*ShipGreen]
>                                 [1.00 color rgb 1.0*ShipGreen]
>
>                         }
>
>                         scale <1,0.01,1>
>                 }
>
>
>                 normal{
>                         pigment_pattern {
>                                 gradient y
>                                 color_map {
>                                         [0.00 color rgb
> 1.0*<0.184,0.309,0.184>]
>                                         [0.47 color rgb
> 1.0*<0.184,0.309,0.184>]
>                                         [0.5  color rgb
> 0.65*<0.184,0.309,0.184>]
>                                         [0.5 color rgb
> 0.65*<0.184,0.309,0.184>]
>                                         [0.52 color rgb
> 1.0*<0.184,0.309,0.184>]
>                                         [1.00 color rgb
> 1.0*<0.184,0.309,0.184>]
>                                 }
>                         }
>                         bump_size 5
>                         turbulence 0.01
>                 }
>
>                 finish{
>                         phong 0.85
>                         phong_size 50
>                         ambient 0
>                 }
>         }
>
>
> I think this has been a good day for me.
>
> :)
>
>
> Tim

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