Here's a simple tiled roof

#macro Make_Tiles(NTiles,Height,Rad,Rot,Peak)
  #local dTheta = 360/NTiles;
  #local Pt1 = vrotate(<0,Height,Rad>,dTheta/2*y);
  #local Pt2 = <-1,1,1>*Pt1;
     union{
       #local T=0;
       #while(T<360)
           triangle{Pt1,Peak,Pt2 rotate T*y}
           cylinder{Pt1,Peak,0.05 rotate y*T}
       #declare T = T + dTheta;
     #end
    rotate y * Rot
  }
#end

#declare Roof = union{
Make_Tiles(16, -1, 1.325, 0, 0)
Make_Tiles(16, -2, 2.325, 360/16/2, y*-0.15)
Make_Tiles(16, -3, 3.250, 0, y*-0.35)
Make_Tiles(16, -4, 4.250, 360/16/2, y*-0.95)
Make_Tiles(16, -5, 5.30, 0, y*-1.65)
pigment{color rgb<.37,.62,.62>}
file://normal {wrinkles scale 0.25}
normal{facets  coords .75}
finish{crand 0.2 specular 0.5 }
}

With thanks to Dan Connelly

Hope this is of some use.

Mick


Philip Bartol <phi### [at] REMOVEMEconcentricnet> wrote in message
news:37b125ba@news.povray.org...
> I've got two projects (just for starters) that would use stone or brick on
> non-flat surfaces...
>
> I was thinking a bitmap wrapped around a cylinder should work (with a
little
> bump mapping) but both projects I have in mind are conical rather than
> cylindrical.
>
> On the slanted surface of a cone the image should get stretched or
squished
> right?
>
> The current project would be painted brick (if I don't just go with a
stucco
> surface), but the other project would be stone. I've seen a tutorial on
the
> web for creating good looking stone textures, but I'm not sure how they
would
> work for a slanted surface.
>
> Along the same lines I also have a cone shaped roof that I would like to
tile,
> but I may be changing the cone roof to a dome of glass, so that might not
be
> an issue (but the other project it will be, so I still would like to know
how
> to do that also).
>
> Any help in pointing me in the right direction would be great....
>
> Thanks in advance.
>
> PHIL
>
> -----[ to reply, the domain name is "concentric.net" ]-----
> Spelling mistakes brought to you courtesy of the
> Allentown Public School System.

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