[Therion] xtherion trace line, convert to curve
Bruce
bruce at tomo.co.nz
Thu Jun 7 22:50:24 CEST 2012
Thanks Stacho
All these years I've been tracing cave outlines by hand!
However on trying it out it seems to be quite fussy, or a least there is a
knack I don't yet have.
PocketTopo sketches don't work, in fact any scan with thin lines seems not
to work.
I had partial success with fat lines scanned at a low resolution (line width
about 1.5 pixels) only when zoomed in to 400%.
Generally it does between 0 and 5 extra points then stops, sometimes with
the last point at an acute angle to the general trend of the line.
So am I right in guessing that this will work best for reasonably fat well
lined drawings? (your example line looks about 4-5 pixels wide)
Bruce
_____
From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Stacho Mudrak
Sent: Thursday, 7 June 2012 10:55 p.m.
To: List for Therion users
Subject: Re: [Therion] xtherion trace line, convert to curve
I am afraid, there are no instructions :(
I needed it to convert raster surface contours to vector data, to be able to
generate 3D model.
You need to load a background image. Then - on a raster line - add first two
points of line, their distance defines tracing step. Like this:
Inline images 2
Then click continue tracing and this is the result.
Inline images 3
You can then convert this line to bezier curve.
Inline images 4
HTH, S.
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