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Hello everybody!
I'm trying to create something like a 'gift wrapping band' (Not sure what
this is called in English....) tied with a knot. I have looked at some
spline macro, but I can't make it work the way I want....
Anybody have any ideas?
Thanks in advance
Mikkel
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The English word is "ribbon" and you can make simple ones by making a spline,
then duplicating the spline and sliding it away from the first spline, then
connecting the two with triangles.
My bezier.inc file can do this in a very limited way:
http://www.spiritone.com/~english/cyclopedia/include/bezier.inc
And you would want to create a simple bezier spline by creating an array of
four points
#declare RibbonA = array [4] { 4 vectors }
#declare RibbonB = MoveSpline(RibbonA,some vector)
ConnectSmooth(RibbonA,RibbonB)
Please feel free to ask me questions, since my code is not yet commented
(I've been trying for a year or so to do that...)
Josh
Mikkel wrote:
> Hello everybody!
>
> I'm trying to create something like a 'gift wrapping band' (Not sure what
> this is called in English....) tied with a knot. I have looked at some
> spline macro, but I can't make it work the way I want....
>
> Anybody have any ideas?
>
> Thanks in advance
> Mikkel
--
Josh English -- Lexiphanic Lethomaniac
eng### [at] spiritone com
The POV-Ray Cyclopedia http://www.spiritone.com/~english/cyclopedia/
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in <3a51fc65$1@news.povray.org> Mikkel wrote:
>I'm trying to create something like a 'gift wrapping band' (Not sure what
>this is called in English....) tied with a knot.
Look for "Bow" at http://cgi-bin.spaceports.com/~pov/
in the catagory "Misc"
Ingo
--
Photography: http://members.home.nl/ingoogni/
Pov-Ray : http://members.home.nl/seed7/
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In article <3A51FFBF.89A0A30A@spiritone.com>, "Josh English"
<eng### [at] spiritone com> wrote:
>
> My bezier.inc file can do this in a very limited way:
>
> http://www.spiritone.com/~english/cyclopedia/include/bezier.inc
>
> And you would want to create a simple bezier spline by creating an
> array of four points
>
> #declare RibbonA = array [4] { 4 vectors }
> #declare RibbonB = MoveSpline(RibbonA,some vector)
>
> ConnectSmooth(RibbonA,RibbonB)
Thanks,
But what about twists?
Maybe one spline to define one side of the ribbon and one spline to
control rotation?
Mikkel
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That's a very good idea, but not one that I've been able to implement
easily.... I suppose a macro that takes the points of one spline and
spins them around... wait... I can do it. I have the code... I just need
the time.
Josh
Mikkel wrote:
> In article <3A51FFBF.89A0A30A@spiritone.com>, "Josh English"
> <eng### [at] spiritone com> wrote:
>
> >
> > My bezier.inc file can do this in a very limited way:
> >
> > http://www.spiritone.com/~english/cyclopedia/include/bezier.inc
> >
> > And you would want to create a simple bezier spline by creating an
> > array of four points
> >
> > #declare RibbonA = array [4] { 4 vectors }
> > #declare RibbonB = MoveSpline(RibbonA,some vector)
> >
> > ConnectSmooth(RibbonA,RibbonB)
>
> Thanks,
>
> But what about twists?
>
> Maybe one spline to define one side of the ribbon and one spline to
> control rotation?
>
> Mikkel
--
Josh English -- Lexiphanic Lethomaniac
eng### [at] spiritone com
The POV-Ray Cyclopedia http://www.spiritone.com/~english/cyclopedia/
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I got the big "404" error when I clicked this link. :-(
Cris
ingo wrote:
> in <3a51fc65$1@news.povray.org> Mikkel wrote:
>
> >I'm trying to create something like a 'gift wrapping band' (Not sure what
> >this is called in English....) tied with a knot.
>
> Look for "Bow" at http://cgi-bin.spaceports.com/~pov/
> in the catagory "Misc"
>
> Ingo
>
> --
> Photography: http://members.home.nl/ingoogni/
> Pov-Ray : http://members.home.nl/seed7/
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ingo wrote:
> Look for "Bow" at http://cgi-bin.spaceports.com/~pov/
> in the catagory "Misc"
Look for "Bow" at http://www.povworld.de/cgi-bin/objects/Misc/
Micha has a new site :)
--
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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