// 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)
}
}
// Plot implements the Plot method of the plot.Plotter interface.
func (bs *Bubbles) Plot(da plot.DrawArea, plt *plot.Plot) {
trX, trY := plt.Transforms(&da)
da.SetColor(bs.Color)
for _, d := range bs.XYZs {
x := trX(d.X)
y := trY(d.Y)
if !da.Contains(plot.Point{x, y}) {
continue
}
rad := bs.radius(d.Z)
// draw a circle centered at x, y
var p vg.Path
p.Move(x+rad, y)
p.Arc(x, y, rad, 0, 2*math.Pi)
p.Close()
da.Fill(p)
}
}
// drawCap draws the cap if it is not clipped.
func (e *YErrorBars) drawCap(da *plot.DrawArea, x, y vg.Length) {
if !da.Contains(plot.Pt(x, y)) {
return
}
da.StrokeLine2(e.LineStyle, x-e.CapWidth/2, y, x+e.CapWidth/2, y)
}
// drawCap draws the cap if it is not clipped.
func (e *XErrorBars) drawCap(da *plot.DrawArea, x, y vg.Length) {
if !da.Contains(plot.Point{x, y}) {
return
}
da.StrokeLine2(e.LineStyle, x, y-e.CapWidth/2, x, y+e.CapWidth/2)
}