How to draw a hyperbola?

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How to draw a hyperbola?

fbee
Hi,
what would be an easy way to draw a hyperbola in LibreCAD.
Can it be done by modifying an ellipse?
Thanks
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Re: How to draw a hyperbola?

dxli
Unfortunately, hyperbola is not fully implemented. We have most components ready, by missing the GUI support for creation and the actual rendering (drawing the curves), clearly the most important parts are missing from the user perspective. Any help is welcome.

For parabola support, you can actually get it by the spline Points (degree=2).

Using elliptical arcs to approximate a hyperbola is not easy.

For approximation, you can try the plot equation plugin, then you have the freedom to draw a hyperbola


fbee wrote
Hi,
what would be an easy way to draw a hyperbola in LibreCAD.
Can it be done by modifying an ellipse?
Thanks
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Re: How to draw a hyperbola?

cadtec
Hello. I would also be interested in this.
How should I enter this in the plot equation plugin?
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Re: How to draw a hyperbola?

dxli
Like y = 1/x, no problem. We are using muparser, which can evaluate functions like a calculator.

What we want is a quick way to implement hperbola and parabola.

cadtec wrote
Hello. I would also be interested in this.
How should I enter this in the plot equation plugin?