// Plot implements the Plotter interface, drawing labels.
func (l *Labels) Plot(da plot.DrawArea, p *plot.Plot) {
trX, trY := p.Transforms(&da)
for i, label := range l.Labels {
x := trX(l.XYs[i].X)
y := trY(l.XYs[i].Y)
if !da.Contains(plot.Pt(x, y)) {
continue
}
x += l.XOffset
y += l.YOffset
da.FillText(l.TextStyle, x, y, l.XAlign, l.YAlign, label)
}
}