[Therion] Correcting bad drawings

[Bruce Mutton]

>It would be good to have some advise on how people deal with mistakes in 
>  sketches. For example:

Having made a couple I now make as sure as I can that there are no gross
mistakes before I start drawing.

>I can export a .xvi to draw around but that doesn't contain the outline 
>of the rest of the scarp to join in to.  I can export a PDF or SVG but 
>that can't be imported as a background into xtherion.  How do people 
>deal with this situation?

You could save your pdf to jpg format with Adobe Acrobat.

>My current idea is to produce a PDF, render to PNG with ghostscript, 
>then import that into xtherion and overlay a .xvi (hoping they'll line 
>up) 

Almost certainly they won't.  If you scan to same resolution and orientation
you may get lucky, but I would not count on it.

>to get station LRUDs to draw round.  Does anyone have an easier way, 
>I have a number of such things to correct?

I would tend to print out a centre line and hand draw on that,
copying/tracing the good parts of the old one.  Then scan and start drawing
a replacement scrap.

Alternatively break your existing scrap into two at the point of the error,
then manually add corrections 'by eye'.  May be confusing, as probably the
scraps as drawn in Xtherion will overlap (although the finished product
should butt them together correctly). 


Cheers,
Hope this helps
Bruce