private void plot_x_vs_y(MouseLog mlog, double delay, GraphComponents main_comp, GraphComponents sec_comp)
{
double x = 0.0;
double y = 0.0;
for (int i = last_start; i <= last_end; i++)
{
if (events[i].hDevice != mlog.hDevice)
continue;
x += events[i].lastx;
y += events[i].lasty;
update_minmax(x, x);
update_minmax(y, y);
main_comp.Add(x, y, false);
}
}