Function animateVisualize

termdashdemo/termdashdemo.go:2798–2875

───────────────────────────────────────────────────────────────────────────── Animation goroutines ───────────────────────────────────────────────────────────────────────────── animateVisualize feeds Tab 3 with rolling data.

(ctx context.Context, w *vizWidgets)

// animateVisualize feeds Tab 3 with rolling data.
func animateVisualize(ctx context.Context, w *vizWidgets) {
	ticker := time.NewTicker(200 * time.Millisecond)
	defer ticker.Stop()

	var lineVals []float64
	radarAngle := 0.0
	loadPct := 62.0
	lineStep := 0

	for {
		select {
		case <-ctx.Done():
			return
		case <-ticker.C:
			w.mu.Lock()
			w.phase += 0.3
			phase := w.phase
			w.mu.Unlock()

			// Radar contacts – rotate slowly around the sweep
			radarAngle = math.Mod(radarAngle+3.0, 360.0)
			contacts := []*radar.Contact{
				{Angle: math.Mod(radarAngle+42, 360), Distance: 0.35 + 0.08*math.Sin(phase*0.7), Label: "A1"},
				{Angle: math.Mod(radarAngle+158, 360), Distance: 0.62 + 0.06*math.Cos(phase*0.5), Label: "B2"},
				{Angle: math.Mod(radarAngle+270, 360), Distance: 0.80, Label: "C3"},
			}
			if err := w.radarW.SetContacts(contacts); err != nil {
				log.Printf("radar: %v", err)
			}

			// Donut – system load
			loadPct = 45 + 30*math.Sin(phase*0.18)
			if loadPct < 10 {
				loadPct = 10
			}
			if err := w.donut2.Percent(int(loadPct), donut.Label(fmt.Sprintf("%.0f%%", loadPct))); err != nil {
				log.Printf("donut2: %v", err)
			}

			// LineChart with threshold at 0.75
			lineStep = (lineStep + 1) % 360
			v := 0.5 + 0.55*math.Sin(float64(lineStep)*math.Pi/60) + 0.2*math.Cos(float64(lineStep)*math.Pi/24)
			lineVals = appendRollingFloat(lineVals, v, 96)
			if err := w.lineW.Series("signal", append([]float64(nil), lineVals...),
				linechart.SeriesCellOpts(cell.FgColor(cell.ColorNumber(75))),
			); err != nil {
				log.Printf("linechart: %v", err)
			}

			// Heatmaps
			xl, yl, hv := vizHeatmapFrame(phase)
			if err := w.heatW.Values(xl, yl, hv); err != nil {
				log.Printf("heatmap: %v", err)
			}
			xl2, yl2, hv2 := vizHeatmap2Frame(phase)
			if err := w.heatW2.Values(xl2, yl2, hv2); err != nil {
				log.Printf("heatmap2: %v", err)
			}