git: 9front

ref: b1ea16bd76983e92d426cb6a1f0b1626dae0c1d7
dir: /sys/src/cmd/plot/libplot/disk.c/

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#include "mplot.h"
void plotdisc(double xc, double yc, double r){
	Point p;
	int rad;
	p.x=SCX(xc);
	p.y=SCY(yc);
	if (r < 0) 
		rad=SCR(-r);
	else
		rad=SCR(r);
	fillellipse(screen, p, rad, rad, getcolor(e1->foregr), ZP);
}