git: 9front

ref: 82f1937de009f27cb4a2cd78f3501d77cce93bfa
dir: /sys/src/cmd/plot/libplot/rvec.c/

View raw version 
#include "mplot.h"
void rvec(double xx, double yy){
	e1->copyx += xx;
	e1->copyy += yy;
	vec(e1->copyx, e1->copyy);
}