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paterson.lst

Associated article: Circles and the Digital Differential Analyzer

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					_CIRCLES AND THE DIGITAL DIFFERENTIAL ANALYZER_
by Tim Paterson


[LISTING ONE]

#include <graph.h>
#include <math.h>

int xbase, ybase;
unsigned xAspect, yAspect;

void SetAspect(double aspect)
{
   xAspect = 0;
   yAspect = 0;
   aspect = fabs(aspect);
   if (aspect != 1.0)
      if (aspect &...
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