generative modeling for Rhino
-
Daniel Piker
- Male
- United Kingdom
- Share
- Blog Posts (2)
- Discussions (55)
- Events
- Photos
- Photo Albums
- Videos (6)
Daniel Piker's Discussions
line perpendicular to a curve
Replied 1 day ago
line perpendicular to a curve
Replied 1 day ago
Gradient Descent
Replied Nov 27
Daniel Piker's Page
Latest Activity
The line from a point to the closest point on the curve will be perpendicular to that curve whether it is a planar or a space curve.
Remember there are an infinite number of perpendicular lines to a curve at a particular point (all lying on the pla…
The line from a point to the closest point on the curve will be perpendicular to the curve. Are you getting lines which are not perpendicular? If so then something is going wrong. Perhaps you can post an image or definition.
Actually, now I think about it, I guess what I describe above is pretty much the same as David's second method. There's no need to take differences between neighbours, just use the surface normal at each point and ignore the z-component to get the v…
Here's my idea for a possible approach to scripting this:
Treat the surface as a 2D scalar field where the value at each point is the height.
For each point find the values of its 4 neighbours (above,below,left,right) some small distance away.
Def…
My own interest in complex numbers stems from their connection with a long running project of mine - rheotomic surfaces, as I described in this essay.
I'm sharing the grasshopper definition here for the first time. It is in the middle of some chang…
You can connect 2 wires to the same input if you hold down shift as you connect the second one. Then you will get 2 outputs.
or, to expand a little :
The 'D' input of the offset component accepts both positive and negative numbers. +ve offsets one way, -ve the other.
+/- ? :)
Thanks Vicente.
Yes, I've been following some of the recent developments with this 'Mandelbulb' and it is very interesting indeed. I might try and play around with it a bit over christmas if i get time.
I did start to look at plotting the Hubbard D…
ok, I'll have a go...
With the real numbers any number squared gives a positive answer. eg:
5 * 5 = 25 , -5 * -5 = 25
because a negative multiplied by a negative gives a positive.
The imaginary numbers behave differently from the reals, in that…
oh, and I forgot to say - undo is a truly wonderful thing!
Great !!
Many thanks David for all your hard work on this.
If anyone is interested, I'll now be able to share the Rheotomic surface definition I've been working on using the new complex number components
If you mean tangent to 3 lines then this is a special case of Apollonius' problem
In general there are 4 solutions - an incircle and 3 excircles. Here's a def I made a while back to solve this that you might find useful:
That's cool.
I've posted my original method too, in case anyone is interested.
First it extracts the 3 Tait-Bryan angles, then it composes them using Rodrigues' half-angle method.
Hi Again.
Attached you might find a definition that reconstructs the helical movement between two positions of the same Brep. It calculates the angle, the axis and the displacement vector.
Adapting this for any type of geometry must be easy. Just th…
I don't have much time, and I haven't thought of everything, but it may be helpful. Find the plane for each of the two orientations. Get the intersection line between the two planes. Retrieve the same point from each of the two orientations (referre…
Profile Information
- Web or Blog
- http://spacesymmetrystructure.wordpress.com
Daniel Piker's Videos
Daniel Piker's Blog
JellyFish (Magnetic Displacement 3D)
A generalisation of my old 'Magnetic Displacement' definition to 3D, with some improvements.
See my blog for further details and download:… Continue
Posted on October 22, 2009 at 10:00am — 2 Comments
Medial Axes
Posted on October 5, 2009 at 6:22am —
Comment Wall (4 comments)
- At 12:52pm on June 8, 2009,
Bartosz Wilk said… - Hi, Daniel i want to create a geodesic dome but i have no clue how to strat. i found a topic where you showed your dome but definition doesnt work on my grasshopper. can you send me a picture of this definition?
Thanks in advance
Koyot
- At 1:04pm on June 2, 2009,
Gilles Retsin said… - Hi Daniel, I think I've got a question which is really suitable for you: Do you know if it's possible to generate a Costa Minimal Surface in Grasshopper? I had a look at the function with a mathematician-friend, but he told me it was involving complex numbers (weierstrass function) and grashopper propably can't calculate this. Any ideas?
- At 5:22pm on May 29, 2009,
Bob McNeel said… - Hi Daniel,
It would be great if you posted a few gallery entries with some links to posts on your amazing blog. It would great if more people knew about it.
Thanks,
- Bob
- At 10:54pm on May 18, 2009,
Mårten Nettelbladt said… - I like your blog a lot!
About
© 2009 Created by Scott Davidson on Ning. Create a Ning Network!
