[Therion] New symbols

[Ben Cooper]

Hi Stacho,
I would also be thankful for steps!  
I was looking for a symbol for an emergency supplies dump, but couldn't find
one in thbook.  Perhaps the international green-cross or similar would do
it?
Regards,
- Ben 

> -----Original Message-----
> From: therion-bounces at speleo.sk 
> [mailto:therion-bounces at speleo.sk] On Behalf Of Andrew Atkinson
> Sent: 11 November 2011 20:55
> To: List for Therion users
> Subject: Re: [Therion] New symbols
> 
> I have already done a hand rail in plan, due to being 
> involved in surveying a show cave, been meaning to put it on 
> the kiwi for a while now. This is one of my first attempts at 
> symbol definition, (cannot remember what I adapted it from), 
> probably very poor, but in case it can help.
> 
> Steps would be wonderful, I have spent far too long trying to 
> use a border to draw steps.
> 
> The other one that vaguely crossed my mind was a point symbol 
> for light, but I put it to the back of the list after very little time
> 
> thanks
> 
> Andrew
> 
> def l_u_rail (expr P) =
>    T:=identity;
>    cas := 0;
>    dlzka := arclength P;
>    mojkrok:=adjust_step(dlzka, 0.8u);
>    pickup PenC;
>    forever:
>      t0 := arctime (cas) of P;
>      t1 := arctime (cas + mojkrok*2/5) of P;
>      t  := arctime (cas + mojkrok/2) of P;
>      t4 := arctime (cas + mojkrok*3/5) of P;
>      t5 := arctime (cas + mojkrok) of P;
>      thdraw (subpath (t0,t1) of P);
>      thdraw (subpath (t4,t5) of P);
>      drawdot
>         (point t of P);
>      #mark_ (P,t,0.02u);
>      #mark_ (P,t,-0.02u);
>       #f := (P,t,0.2u);
>       #draw f;
>      cas := cas + mojkrok;
>      exitif cas > dlzka - (2*mojkrok/3); % for rounding errors
>    endfor;
> enddef;
> 
> 
> initsymbol("l_u_rail")
> #text en line u:rail "Railing"
> 
> On 11/11/11 19:48, Stacho Mudrak wrote:
> > Hello everybody,
> >
> > after drawing a complex map of one show cave, I would like 
> to add new 
> > standard symbols to therion. These should include:
> >
> > line edge - should be used to draw other then rock edges, e.g. wall 
> > structures in elevation. There is already rock-border -- rock-edge 
> > pair, there is general border symbol but no general edge symbol.
> >
> > line rope - already discussed here, just line point option anchor 
> > on|off should work also
> >
> > line handrail - this symbol already exists in some cave 
> symbol sets. A 
> > line with dots in plan, in elevation some standard 1m tall handrail 
> > would be drawn.
> >
> > point handrail - used to draw handrail in cross-sections
> >
> > line steps - should be used in both, plan / elevation 
> projections. In 
> > plan, this line would surround steps area and steps would be drawn 
> > parallel to the first line segment. In elevation, 20cm 
> steps would be drawn.
> >
> > line path - used to draw concrete or other path in caves, 
> where it was 
> > built. If it will be closed curve, it will be filled with 
> "area path". 
> > See below.
> >
> > area path - fill for path areas. It would be automatically 
> applied for 
> > closed line steps/path in plan projection.
> >
> > Also should be added:
> > line rope-ladder
> > line fixed-ladder
> > line via-ferrata
> > point via-ferrata
> >
> > Do these symbols make sense? Any comments? Any other symbols, that 
> > should exist in the standard therion library?
> >
> > Thanks a lot for the feedback, S.
> >
> >
> >
> >
> > _______________________________________________
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> > Therion at speleo.sk
> > http://mailman.speleo.sk/mailman/listinfo/therion
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