control signals to draw a circle

[lakmalp]

Hi,

This is my first post! :)

I am planning to build a 'plotter' and wondering how the X and Y stepper motors should be controlled. If a line to be drawn, should the X and Y motors be stepped as illustrated in the drawing? If so, when a curve is drawn controlling will be same?



Red line is the line to be drawn
Pink line is the path of the pen

My intuition tells me that only one stepper is operated at a time. Your help would be greatly appreciated.

Thanks
Lakmal