Hetrick XY to Polar help

zakforrest · December 18, 2021, 12:03am

i cant seem to find information on this module (XY to Polar)

would love an explanation of whats happening here. i’m messing around with it for some oscilloscope art, and its really cool, but would love to have a bit more info on what its doing and how to use it “properly”

Jens.Peter.Nielsen · December 18, 2021, 12:20am

It converts between X,Y(cartesian coordinates) and R,theta (polar coordinates).

the source code is available, if you want to know how it’s done in this particular module:

https://github.com/mhetrick/hetrickcv/blob/v2/src/Polar.cpp

Jens.Peter.Nielsen · December 18, 2021, 12:31am

You can use it for making spirals and other stuff

Input R is in the range 0 to 10 V - this is the radius.
input theta (the angle) is in the range 0 to 2 *

I convert an LFO to this range using “Volage Scaler”

Min = 0, Max = 10 ( range of the input signal from the LFO )
scaled to the output set by: LIMIT A = 0, LIMIT B = 2 * pi