Grasshopper

algorithmic modeling for Rhino

"Spiral Explorer"

Hey,

I'm a spiral-addict and during my time with the Rhino/Grasshopper Demo I created this little setup that I thought may be interesting for other beginners as well.

It basically allows you to create spirals around straight or curved center splines with a second spline defining the radius of the spiral.

You can also control the density of the spiral and the subdivisions.

Feel free to improve and expand on this! :-)

Here an example with low density:

And here one with high density:

Cheers,

Tom

Thomas Helzle | ScreenDream

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Permalink Reply by PIERRE HUGGINS on August 2, 2015 at 11:04am

Very nice. I have been trying to make a spiral path on a sphere. I took your model and was trying to make a spiral surface but have yet to solve that (noobie). I never would have come up with your method for creating this curve. What do you suggest? 

Permalink Reply by Thomas Helzle on August 2, 2015 at 11:32am

Well, create a line from bottom to top of your sphere as the centre line of the spiral.

Then create a half-circle arc  between the two end-points to define the radius with the second input.

That gives you a spherical spiral.

Then project that on the surface of your sphere to do with it whatever you like/need?

Cheers,

Tom

Permalink Reply by PIERRE HUGGINS on August 2, 2015 at 11:06am

Here are the files I have used. 

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