Andrew,
Still version 3.21.1.0 ; Win7 32bit.
In QCAD we can draw splines by fit-points and control-points.
An example of those are in the example included.
On investigation the spline in the post of benjamindahl is a different kind:
https://www.qcad.org/rsforum/viewtopic. ... 859#p21518
Stepping through the points:
-fit-points: steps from fit-point to fit-point. Start- and end-point and fitpoints are knots on the curve.
-control-points: steps from start-point over control-points (not necessarily on the curve) to end-point.
The knot points can be found on the curve as 'intersections'.
-benjamindahl: from the start-point every thirth control is a knot-point.
Knot-points are on the curve and also found as 'intersections'.
Two references in between two knots are vectors and not necessarily on the curve.
It seems this is more like a string of bezier segments.
What is the difference? How are they named?
Can the third kind (knot-vector-vector-knot-....) be constructed with QCAD?
Regards
CVH
Different kinds of splines.
Moderator: andrew
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Attach drawing files and screenshots.
Post one question per topic.
Different kinds of splines.
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- Text Explode Spline 2 linesegments.dxf
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Re: Different kinds of splines.
So the third kind is suported if originated from 3d party?
Re: Different kinds of splines.
Knot vectors are imported as they are stored in DXF but cannot be changed in QCAD.