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Problem loading DXF with control point splines [solved]

Posted: Tue Apr 02, 2013 9:58 am
by andrewb
Hi Folks,

I've had an issue loading certain DXF files with splines properly. It seems that QCAD is borking up the interpretation of the splines resulting in 'wave-y' lines. I have loaded the same DXF into other CAD apps (such as ViaCAD) and they load just fine. If it helps, it seems all of the splines in question are control point splines.

Here is the DXF loaded in QCAD:
QCAD Small.png
QCAD Small.png (57.78 KiB) Viewed 8608 times
Note the rounded gear teeth, the skewed boxes around the text and the squared 'O's and circle surrounding the keyway.

Here is the same DXF loaded (correctly) in ViaCAD:
ViaCAD Small.png
ViaCAD Small.png (70.78 KiB) Viewed 8608 times
The DXF itself is from the 'Graphics for rotarians' website under 'Logos for architechual (sic) and contour cutting'. Googling 'Rotary DXF' gives the page as the first result. If the forum will allow me, here is a link to the file (just remove the spaces):

http://www.graphics-for-rotarians.org/g ... _wheel.DXF

Cheers!

Andrew

Re: Problem loading DXF with control point splines

Posted: Tue Apr 02, 2013 3:40 pm
by andrew
Thanks for the report and file.

I can confirm that such splines (clamped at individual control points) are not supported in QCAD 3.0.

The current development version seems to display your file fine, so this will very likely be solved in the next update. A new development snapshot will likely be released before April 15.

Re: Problem loading DXF with control point splines

Posted: Mon Apr 08, 2013 7:57 pm
by andrew
A new snapshot release of QCAD (3.0.9) which fixes the above problem is now available from the customer area:
http://www.ribbonsoft.com/en/customer-area

Re: Problem loading DXF with control point splines

Posted: Mon Apr 08, 2013 9:16 pm
by Clive
andrew wrote:A new snapshot release of QCAD (3.0.9) which fixes the above problem is now available from the customer area:
http://www.ribbonsoft.com/en/customer-area
Yep - that's got it 8)

Re: Problem loading DXF with control point splines

Posted: Tue Apr 23, 2013 5:02 am
by andrewb
Fantastic! Works great. Thank you for such a quick response :)

Cheers,

Andrew