[Therion] Converting Inkscape Drawings of very large caves intoTherion

Footleg drfootleg at gmail.com
Thu Feb 24 21:49:47 CET 2011


Thanks Bruce, I'll try that. In my case I had 3 scraps, each with 2 points.
But the scrap I emailed the data from was in a separate .th2 file to the
other two. The two scraps in the other .th2 file displayed fine. I am trying
to import passage details drawn in another drawing package (via Inkscape) so
I started with a few really simple scraps to test out my idea of how to do
so. I assumed that I only needed two survey points in order to orientate and
scale each scrap correctly. I'll try adding some more points (tomorrow, as I
left the data on a computer at work) and see if that fixes the model.

Footleg

On 24 February 2011 18:47, Bruce <dangle at tomo.co.nz> wrote:

>  >Simple scrap, but why does my lox model appear to only show the walls
> when seen from the wrong side?
>
> >I have checked that the wall lines all have the yellow tick pointing
> inside the passage. But half my passage appears in the Loch viewer to only
> show the wall from the inside face, not from outside the model.
>
> >Very simple data file contents are as follows. The survey stations are
> being imported from a survex 3D file. But I am only using 2 survey points to
> scale the scrap, so you should be able to create any two points to
> substitute the survey data.
>
>  I have done this with scanned paper files a number of times.
>
> Always if I use two points the lox files come out as you describe, or with
> vertical extensions from the actual cave position to the surface.
>
> A solution that has worked once, but not tested yet on the others is two
> break the drawing into more than one scrap, and have at least two points per
> scrap.  This way the therion drawings and lox come out the same as with a
> conventional survey.
>
> It seems that two points, one scrap is too minimalist for the current
> implementation.
>
> Bruce
>
>
>
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