"Hi Scott
This is great - suits my need perfectly!
Thanks a lot.
Jacob"
generative modeling for Rhino
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Jacob Drachmann
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Jacob Drachmann's Discussions
Clothoids in GH/Rhino
12 Replies
I am desperately trying to find a way to connect two lines with a curve with the following properties:1. The curve is tangent to the endpoints of the two lines2. The curve has zero curvature where it…Continue
Started this discussion. Last reply by Jacob Drachmann Apr 1.
Sweep2rails GH
Hi! I want to use the swee2rails component using two closed curves as rails. The sweep component doesnt give an output,Does anyone know how to make this work?Thanks!JacobContinue
Started Jan 12
Retrieving specific index in branches of a datatree
1 Reply
Hello allI´m trying to retrieve a specific item i all the branches of a tree. I want i.e. item 1 in all the branches. Any ideas?thank you very muchRegards, JacobContinue
Started this discussion. Last reply by Jacob Drachmann Dec 9, 2011.
Baking text in Rhino
6 Replies
Hello, I am having problems baking texttags in the latest build - does anyone have an idea? The polylines i want to put a tag on are to be nested with Rhinonest, so i need the numbers baked, so they…Continue
Started this discussion. Last reply by Jacob Drachmann Nov 9, 2010.
Jacob Drachmann's Page
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Hannes Löschke replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"My understanding of BSplines is: For a degree3 BSpline, Cuvature is 0 within the range of 3 control points in a linear row. If the controlpoints form an end, the 0 crossing will be at the Splines end.
So if you have the tangent vector of the line…"
Scott Davidson replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"In Rhino 5 is the adjustable blend curve command. It makes the curve you are looking for:
Unfortunately this function is not in the SDK yet. You could make a G2 or G3 blend curve by projecting lines, dividing…"
Ola Jaensson replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"Microstation has clothoids as curve primitives. If no polyline/spline approximations are exact enough for your purpose, maybe you have to use Generative Components in Microstation."
Jacob Drachmann replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"They are really nice yes, i want to use them as railcurves for a sweep, which will hopefully result in a very nice surface too:)
Haven´t been taught about it in scool no, but road and railroad engineers definetely do. They can also be created…"
Jacob Drachmann replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"Hi Ola
Thank you for the reply. I need symmetric u-curves as the one the figure i have now posted. Thank you for the article.
Best, Jacob"
Jacob Drachmann replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"Thank you for replies, here is an update:
In an article by Walton and Meek from St. Pauls College "A controlled clothoid spline" (see figure) , i have found a method to create exactly the curve i need using Fresnel integrals. But i do not…"
Ola Jaensson replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"Are the lines allowed to be shortened or elongated?
Do you want the curves to be symmetric around the bisector?
Do you only need U-curves or S-curves as well?
Try searching for Euler spirals and Cornu spirals too, but you probably knew…"
Mateusz Zwierzycki replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"As I flied over some text about clothoid, this is one of most elegant curve Ive seen.
"
taz replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"And railroad tracks!
http://en.wikipedia.org/wiki/Track_transition_curve"
Mateusz Zwierzycki replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"just following this discussion..."
David replied to Jacob Drachmann's discussion Clothoids in GH/Rhino"Hi Jacob, did you know how to do it? I am also very interested. I have found a lot of information (about equations) but it's too difficult to me understand it.
I can only recommed this…"
Jacob Drachmann posted a discussionClothoids in GH/Rhino
I am desperately trying to find a way to connect two lines with a curve with the following properties:1. The curve is tangent to the endpoints of the two lines2. The curve has zero curvature where it connects to the lines and varying curvature between the ends.A clothoid has these properties, but i do not know how to create it.The image attached shows an arc connecting the two lines in the desired way - but the curvature must be zero at endpoints.I hope somebody can help me with this!Best,…See More
Jacob Drachmann commented on Daniel Piker's video
Kangaroo bending validation
"Hi Daniel
The file "bendingexample.ghx" is not downloaded when i use the link? Can you share it again?
Thank you!
Jacob"
Jacob Drachmann posted a discussionSweep2rails GH
Hi! I want to use the swee2rails component using two closed curves as rails. The sweep component doesnt give an output,Does anyone know how to make this work?Thanks!JacobSee More
Jacob Drachmann joined Jon Mirtschin's group
Geometry Gym
BIM (Building Information Modeling) enhancements for Rhino and Grasshopper, import/export to Revit, Digital Project and Archicad amongst others. Also Structure modeling (including analytical) and Computational Geometry Tools such as mesh relaxation/inflation and tessellation tools.See More
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