feat: polish & windviz & deploy

internal/engine/profile.go

@@ -30,39 +30,30 @@ func (p *Profile) Run(t0 float64, launch State, events *EventSink) []Result {
 	results := make([]Result, 0, len(p.Stages))
 	t, s := t0, launch
 
-	for i := 0; i < len(p.Stages); i++ {
-		stage := p.Stages[i]
-		ctx := StageContext{
-			ProfileStart:    t0,
-			PropagatorStart: t,
-			Launch:          launch,
-			PropagatorState: s,
-			Direction:       p.Direction,
-		}
-		res := stage.run(ctx, t, s, p.Globals, events)
+	for _, stage := range p.Stages {
+		res := stage.run(p.context(t0, t, launch, s), t, s, p.Globals, events)
 		results = append(results, res)
-
-		last := res.Points[len(res.Points)-1]
-		t = last.Time
-		s = State{Lat: last.Lat, Lng: last.Lng, Altitude: last.Altitude}
+		t, s = res.Path.Last()
 
 		// Follow Fallback chains until none remains.
 		for res.Outcome == OutcomeFallback && stage.Fallback != nil {
 			stage = stage.Fallback
-			ctx = StageContext{
-				ProfileStart:    t0,
-				PropagatorStart: t,
-				Launch:          launch,
-				PropagatorState: s,
-				Direction:       p.Direction,
-			}
-			res = stage.run(ctx, t, s, p.Globals, events)
+			res = stage.run(p.context(t0, t, launch, s), t, s, p.Globals, events)
 			results = append(results, res)
-			last = res.Points[len(res.Points)-1]
-			t = last.Time
-			s = State{Lat: last.Lat, Lng: last.Lng, Altitude: last.Altitude}
+			t, s = res.Path.Last()
 		}
 	}
 
 	return results
 }
+
+// context builds the StageContext for a stage starting at (tStart, sStart).
+func (p *Profile) context(t0, tStart float64, launch, sStart State) StageContext {
+	return StageContext{
+		ProfileStart:    t0,
+		PropagatorStart: tStart,
+		Launch:          launch,
+		PropagatorState: sStart,
+		Direction:       p.Direction,
+	}
+}