Remapping Joystick values

Hi,

I'm trying to make a cylinder bend in (in Rhino) in different directions and with different magnitudes using a joystick. The setup of the bending cylinder has already been done thanks to the Jackalope plugin.

I'm able to read the joystick values (x and y) within Grasshopper. My goal now is to convert these values into to the direction (0 degrees to 360 degrees) where the cylinder has to be bent aswel as the magnitude of the bending.

I just have no idea how I would convert the x and y values in order to control two different parameters. Has anyone done this before?

Simon

Replies to This Discussion

Permalink Reply by Pieter Segeren on December 25, 2016 at 6:46am

Hi SimonVP, you're probably looking for the Atan2(x,y) function. For vector amplitude use pythagoras.

Permalink Reply by SimonVP on December 25, 2016 at 6:57am

Thanks Pieter. The direction now works.

For the amplitude, Should I write an expression like √((x²) + (y²))?

Permalink Reply by Pieter Segeren on December 25, 2016 at 7:01am

that's an option yes, I would use hypot(x,y).

Permalink Reply by SimonVP on December 25, 2016 at 7:36am

It works partly (kind of). The base value resulting from the Pythagoras expression is now 735. The min and max values I got are 0 and 1446. Is there a way to use these values to control my vector amplitude (which ranges from 0 to 18?)

Thanks

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