Do a web search for Bresenham's algorithm. (I have only got one in C)
Bresenham was responsible for integer line algorithims for plotters. His
techniques were then used to produce integer algorithims for circles.

Theses algorithms are designed for x-y plotters and use no floating
point calculations.

Ravi Pailoor wrote:
>
> Hi PICkers,
>
> I have a PIC controlling 2 stepper motors connected to a light source.
>
> I need to move the light source in a circle and a spiral.
>
> Does anyone have PIC / 8031 based algorithm to draw circles ?
>
> Thanks
>
> Pailoor
>
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