Esempio n. 1
0
// Plot draws the Line, implementing the plot.Plotter interface.
func (rp *ResponsePlotter) Plot(da plot.DrawArea, plt *plot.Plot) {
	trX, trY := plt.Transforms(&da)

	start := float64(rp.Response.GetStartTime())
	step := float64(rp.Response.GetStepTime())
	absent := rp.Response.IsAbsent

	lines := make([][]plot.Point, 1)
	lines[0] = make([]plot.Point, 0, len(rp.Response.Values))

	/* ikruglov
	 * swithing between lineMode and looping inside
	 * is more branch-prediction friendly i.e. potentially faster */
	switch rp.lineMode {
	case "slope":
		currentLine := 0
		lastAbsent := false
		for i, v := range rp.Response.Values {
			if absent[i] {
				lastAbsent = true
			} else if lastAbsent {
				currentLine++
				lines = append(lines, make([]plot.Point, 1))
				lines[currentLine][0] = plot.Point{X: trX(start + float64(i)*step), Y: trY(v)}
				lastAbsent = false
			} else {
				lines[currentLine] = append(lines[currentLine], plot.Point{X: trX(start + float64(i)*step), Y: trY(v)})
			}
		}

	case "connected":
		for i, v := range rp.Response.Values {
			if absent[i] {
				continue
			}

			lines[0] = append(lines[0], plot.Point{X: trX(start + float64(i)*step), Y: trY(v)})
		}

	case "drawAsInfinite":
		for i, v := range rp.Response.Values {
			if !absent[i] && v > 0 {
				infiniteLine := []plot.Point{
					plot.Point{X: trX(start + float64(i)*step), Y: da.Y(1)},
					plot.Point{X: trX(start + float64(i)*step), Y: da.Y(0)},
				}
				lines = append(lines, infiniteLine)
			}
		}

	//case "staircase": // TODO
	default:
		panic("Unimplemented " + rp.lineMode)
	}

	da.StrokeLines(rp.LineStyle, lines...)
}
Esempio n. 2
0
func (g GlyphBoxes) Plot(da plot.DrawArea, plt *plot.Plot) {
	for _, b := range plt.GlyphBoxes(plt) {
		x := da.X(b.X) + b.Rect.Min.X
		y := da.Y(b.Y) + b.Rect.Min.Y
		da.StrokeLines(g.LineStyle, []plot.Point{
			{x, y},
			{x + b.Rect.Size.X, y},
			{x + b.Rect.Size.X, y + b.Rect.Size.Y},
			{x, y + b.Rect.Size.Y},
			{x, y},
		})
	}
}