I have a customer that sends me DXFs to produce shapes on flat glass CNC.
Sometimes they will send a curved shape e.g. in this case, an oval / ellipse.
The shape will import as a spline but what I see in QCAD is not the expected result.
At least, and I'm not sure if it is a QCAD problem at all, what I am seeing is not what the customer thinks he has sent...
In the attached file, the shape is not a true ellipse but what looks like a bloated version of one.
Can anybody explain what is happening here?
I believe they are using Rhino CAD to produce the file.
Thanks.
Win 10 Pro
QCAD V3.26.4
Importing Splines
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Importing Splines
- Attachments
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- tapel top Curve - not the square n.dxf
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Re: Importing Splines
Hi,
Should this be an ellipse of 805 by 560?
The representation by a second order spline is odd.
It could be that this is a spline type that is not supported ...
e.g. I can't reproduce the shape by the 9 control points whatever I use as spline degree.
Regards,
CVH
Should this be an ellipse of 805 by 560?
The representation by a second order spline is odd.
It could be that this is a spline type that is not supported ...
e.g. I can't reproduce the shape by the 9 control points whatever I use as spline degree.
Regards,
CVH
Re: Importing Splines
Yes, they tell me it is supposed to be an ellipse.
No, I played with those settings also to no avail.
No worries, I will just be more careful to check when they send this type of drawing.
Unfortunately a few times we have produced incorrect glass because of this.
Maybe they can explode the splines before sending.
Many thanks.
No, I played with those settings also to no avail.
No worries, I will just be more careful to check when they send this type of drawing.
Unfortunately a few times we have produced incorrect glass because of this.
Maybe they can explode the splines before sending.
Many thanks.
Re: Importing Splines
The spline uses control points with different weights. I can confirm that this is not currently supported by QCAD.