[Therion] How to morph sketches

[Torsten Schnitter]

Thanks a lot for these examples and explanation.
Now I got it to work. :-)
(you never stop learning about Therion...)

This last article from Marco is realy worth a read.
Great stuff!

cheers,
Torsten

> Tarquin Wilton-Jones via Therion <therion at speleo.sk> hat am 28.06.2021 10:17 geschrieben:
> 
>  
> > You are right. It could be very useful in simple passages. But in your
> > case I’ll divide sketch to three pieces first and try to use “extra”
> > points when LRUD are available.
> 
> Ah yes, doing it as separate scraps is a lot less messy. Though in the
> end you then probably have to keep using multiple scraps, even if the
> idea was to warp it into a nice shape so you can draw it up as a single
> scrap.
> 
> I tested out the "sketch-warp" option (that goes directly in the
> .thconfig file, not inside the layout). "plaquette" gave a very good
> resulting shape for my demo case (and was really fast!), but made the
> lines jagged and hard to see. "linear" preserved the sketch best but
> caused more distortion. "point" took forever, but the result was
> absolutely excellent. It is interesting to me that the default "line"
> gave the worst result of all options.
> 
> The Therion book does not mention "linear" or "point", and could do with
> an update. I found more details on this very old tutorial:
> http://marcocorvi.altervista.org/caving/tbe/m_04/m_045.htm
> 
> Torsten, that article is a treasure trove for you!
> 
> > Note: You may change order of morphed sketches and xvi with splay shots,
> > centreline and xvi mesh, switch visibility on/off, move them to exact
> > coordinates in “Background sketches” part of Map editor.
> 
> Are these documented anywhere? Specifically how to use the options.
> 
> I can see the "point extra" options in the linked article above, but not
> how to use the coordinates or visibility.
> 
> Feeling like I must have missed something, since the Therion book
> doesn't mention "background sketches" at all, and only describes setting
> <x> and <y> coordinates for the scrap's -sketch option. I am guessing
> that x/y lets you offset the sketch to a more useful location relative
> to your stations (though I have no idea why you would need to).
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