Python script that reads 3d file and writes a javascript file

[Michael Lake]

Hi Olly and Survexers

New version put up with brackets removed and now refers to dump3d and not 3ddump. 

Quoting Olly Betts <olly at survex.com>:
> On Fri, May 23, 2014 at 07:30:35PM +1000, Michael Lake wrote:
> > My modified version of David Molnar's and Wookies python script that
> > turns the 3d into json is at:
> > http://www.speleonics.com.au/mikes/software/3dtojson.py
> > This prints lablels fine but still has the E-W swapped. It might be a
> > simple matter of changing sign of some of the variables in that python
> > script. 
> 
> It looks to me like it is the viewer that's wrong - e.g. if I look at
> this, then I can't simultaneously have North up the screen, East to the
> left, and the Z axis such that 0 is nearest to me:
> 
> http://dm516.user.srcf.net/loser/squiggle_76.html
> 
> And if I rotate it so I'm looking from underneath, then I see what looks
> to be a correct plan for that cave.
> 
> The problem looks to be that the axes have the wrong handedness, so in
> fact flipping any axis will fix this, as would swapping any pair of
> axes.  The cause may be that the coordinates are written out in the
> js as (east, height, north) (aka (x,z,y)) rather than (east, north,
> height) (aka (x,y,z)).
> 
> I notice it keeps the '[' and ']' delimiters around the labels, which
> are just in the dump3d output to help distinguish the station name
> visually from the other data, and aren't part of the station name.  It
> also talks about "3ddump" in the comments, which may confuse people
> trying to run it, as the tool is actually called "dump3d".
> 
> Wookey (or David if he's subscribed) - what's the licence for the
> convertor and the viewer?  I can't see one anywhere for either,
> which isn't very helpful.  And is there a repo for it somewhere?
> 
> Cheers,
> Olly


Mike Lake