Hi All, I am making a simple exercise with curves and I want to retrieve the normal vector at each parameter t. [curve-frame] I don’t understand why two of the frames are not planar with the curve. If i rebuild the curve (with the same degree and points number), all the frames are then planar,…

Hi @giacomo_forcina , I can’t exactly tell you, why the planes are rotated. My guess would be that this has to do with curvature. However, you could construct them correctly yourself and get the normal vectors of the curve even before, or without the planes. Here’s how to do that: [27] curve-fr…

Thanks @diff-arch for the example. Your solution is good. Using the Normal to the plane of the surface ( which is the same for any point of the curve), you got the third vector using the Cross Product. I still don’t understand which is the scope of the Curve Frame Component, if it doesn’t output a…

[image] giacomo_forcina: Your solution is good. Using the Normal to the plane of the surface ( which is the same for any point of the curve), you got the third vector using the Cross Product. Thanks, in your example, if you don’t want to generate a surface, you could also just manually provid…

Curve Frame Orientation

Grasshopper

DavidRutten (David Rutten) January 3, 2019, 7:10am 3

That component uses the local plane of the curve, which only exists if there’s some curvature. The bits where your plane goes horizontal must be fully linear.

Topic		Replies	Views
Planes flip as they move around reparameterized curve Grasshopper Developer	9	1358	December 7, 2019
Orient all planes around a curve the same way Grasshopper windows , plane	4	2219	February 9, 2022
Unstable Curve Frames Grasshopper windows	5	414	October 25, 2022
What determine plane orientation in perpendicular frame Grasshopper windows	1	378	June 1, 2022
Vector Normal? From Orgin? Grasshopper	10	3432	February 14, 2020

Curve Frame Orientation

Related topics