Spiraling Rhombus

I am trying to recreate the above image in 2D. I am new to GH and tried the following:

I divided the circumference into 50 and then thought of doing the same with the innner circle. I realized this is not an efficient way of doing it as well as I could not figure out how to connect points multiple times. Would appreciate any help

Thx

Replies to This Discussion

Permalink Reply by Laurent DELRIEU on January 5, 2017 at 2:57pm

Hello here is a sort of solution, in order to change the scale depending on the radius I used Graph Mapper. It is also not spiraling so I don't quite undertand the title. Is it an illusion or is it realy spiralin, a better picture could be useful. And also the real purpose, illustration, making it ...

If you want a pseudo spiraling use the second graph mapper

Attachments:

morph_from_rectangle_to_disc.gh, 23 KB

Permalink Reply by Tal on January 5, 2017 at 5:59pm

Unbelievable! Looks like you got it!

I am making a custom headboard for a bed. All of the pieces will be cut out of various veneers. what I am looking for is a 2D cutting diagram. How can I manipulate the colors?

Here is what I created in Rhino. It is very linear, I was aiming for more of a logarithmic spiral.

Permalink Reply by Laurent DELRIEU on January 5, 2017 at 10:31pm

For the color I will try to change the strategy by using just closed curves for the pattern.so at the end it will more simple to put the right color. If possible I will try to apply a real spiral

Permalink Reply by Laurent DELRIEU on January 6, 2017 at 2:11pm

I manage to make to morph curve from rectangle to spiral, but I still have some problem to make it work for rhombus. Fot it the curves escape from the rectangle of control

For cubes, I had to modify the upper point of the curves, the one outside the rectangle, so it is possible that this will not work for all scale factor

Attachments:

morph_from_rectangle_log_spiral_cubes.gh, 26 KB
morph_from_rectangle_log_spiral.gh, 32 KB

Permalink Reply by Tal on January 6, 2017 at 3:43pm

Thanks for all the help! I have a silly question- once I open it in GH- how do I view the results in Rhino? :)

Permalink Reply by Laurent DELRIEU on January 7, 2017 at 1:49am

If you just want to see it in rhino it depends on the option you have in grasshopper, only selected components ... see on the upper right of UI the cylinder
After that you can bake the objects. It is sometime difficult to bake using the display component, right click on the input geometry not on the icon of the document ...
If you have problems on that read first documentation
http://www.grasshopper3d.com/page/tutorials-1
If still problem post some screen capture

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