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Make parabola (by Geert Hospers)
1 or 2 years ago I wished that we can easyly make parabola.
I felt then that I was not well understood.
In Solvespace it is a hassle because Solvespace immediately starts with 4 points, a cubic spline.
I noticed that Freecad now has ""B-spline by knots" feature.
https://wiki.freecad.org/File:..._by_knots_v2_relnotes_0.21.gif
That is exactly what I want!
I felt then that I was not well understood.
In Solvespace it is a hassle because Solvespace immediately starts with 4 points, a cubic spline.
I noticed that Freecad now has ""B-spline by knots" feature.
https://wiki.freecad.org/File:..._by_knots_v2_relnotes_0.21.gif
That is exactly what I want!
(no subject) (by Geert Hospers)
Viewing this very interesting Freya Holmér video: https://www.youtube.com/watch?v=jvPPXbo87ds there is a LOT of spline types.
It appears that one (Freya Holmér) may want beautifull curves, but I as a mechanical engineer want an easy way to define them.
Therefore I prefer a discription by many parabola over a mutipoint spline...
It appears that one (Freya Holmér) may want beautifull curves, but I as a mechanical engineer want an easy way to define them.
Therefore I prefer a discription by many parabola over a mutipoint spline...
(no subject) (by Geert Hospers)
By "many parabola" I actually mean a few parabola.
An aerodynamic profile may need only 3 to 5 parabola to describe.
The benefit of the parabola is that the math remains VERY simple; that is very important if you want to make it with a CNC machine.
Also rounding edges that usually are done by specifying radius can in pratice sufficiently accurate be done as parabola.
All in all: I want the parabola as a basic construction element.
An aerodynamic profile may need only 3 to 5 parabola to describe.
The benefit of the parabola is that the math remains VERY simple; that is very important if you want to make it with a CNC machine.
Also rounding edges that usually are done by specifying radius can in pratice sufficiently accurate be done as parabola.
All in all: I want the parabola as a basic construction element.
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