plan9port

fork of plan9port with libvec, libstr and libsdb
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range.c (309B)

      1 #include "mplot.h"
      2 void range(double x0, double y0, double x1, double y1){
      3 	e1->xmin = x0;
      4 	e1->ymin = y0;
      5 	e1->scalex = e1->sidex / (x1 - x0 );
      6 	e1->scaley = e1->sidey / (y1 - y0 );
      7 	e1->quantum=e0->quantum/sqrt(e1->scalex*e1->scalex +
      8 		e1->scaley*e1->scaley);
      9 	if(e1->quantum < .01)
     10 		e1->quantum = .01;
     11 }