Re: [artworks] Graphics site update
- From: Tim Powys-Lybbe <tim@xxxxxxxxx>
- To: artworks@xxxxxxxxxxxxx
- Date: Mon, 29 Mar 2010 07:34:58 +0100
On Acorn.Announce Richard Astbury wrote on 27 Mar at 12:08:
> I've updated my website with new graphic material. All the new work is
> based on circular geometric designs many using ArtWorks blends.
>
> Martin Bazley has updated his excellent spirograph simulator - Cogs. I
> have used several of the rendered spirographs embellished in AW to
> demonstrate the capabilities of the program.
>
> AW can also be used for simple animation as the latest example
> illustrates.
>
> http://artworks.riscos.org.uk
This took me to the very elegant portrayal of a Knot Pattern,
Triangular_knot.htm at:
http://homepages.nildram.co.uk/~riscos/Album8/htxt/Triangular_knot.htm
Unfortunately it is in a bitmap so I can't see how it is done.
I have been trying to do something similar following an original design
which I have placed at:
http://www.tim.ukpub.net/images/LacyKnot_bw.tif
My first attempt at doing this in Artworks was by drawing very thick
lines for the outline rope and superimposing a thin line on top of that.
This fell at the fence of handling the sharp angles where the points
got blunted, as can be seen in this small, zipped artworks file:
http://www.tim.ukpub.net/images/Lacy_Points.zip
So I moved from lines to two dimensional objects. The hurdle at this
stage was that I could not get the threads or ropes to lie on top of one
another as in the original drawing. My only way round this to date is
to break the objects in two, arrange one half on top and the other below
and then group them together. Still at work on this and it needs both
completing and lots of refinement but you can see the method I'm using
in this zipped artworks file:
http://www.tim.ukpub.net/images/Lacy_Knot_scruffy.zip
(It's a rather large file as there is a version of the original bitmap
in the background layer.)
If I ever get this finished, the final step should be to add in some
shading as in Richard's excellent object above.
But any comments on the general approach to copying the original Lacy
Knot would be much appreciated.
--
Tim Powys-Lybbe tim@xxxxxxxxx
for a miscellany of bygones: http://powys.org/
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