public override void Update(GameTime gameTime)
{
// momentanten Zeitpunkt aktualisieren
current += (float)gameTime.ElapsedGameTime.TotalSeconds;
// maximalen Zeitpunkt der Waypoints ermitteln
total = Waypoints.Last().Item3;
// wenn aktueller Zeitpunkt größer dem Maximum -> bei 0 beginnen
if (current > total)
{
current = current % total;
}
// aktuellen Waypoint ermitteln
int index = GetWaypointIndex(current);
Waypoint last = GetWaypoint(index - 1);
Waypoint begin = GetWaypoint(index);
Waypoint end = GetWaypoint(index + 1);
// Start- und End-Tangente ermitteln
Vector3 beginTangent = GetTangent(index, Tension, Bias, Continuity);
Vector3 endTangent = GetTangent(index + 1, Tension, Bias, -Continuity);
float t0 = last.Item3;
float t1 = begin.Item3;
// wenn vorangegangener Wegpunkt der letzte war, Zeitpunkt für Interpolation anpassen
if (t0 > t1)
{
t0 -= total;
}
// Verhältnis von aktuellem Zeitpunkt zu Zeitspanne zw. zwei Wegpunkten berechnen
float amount = (current - t0) / (t1 - t0);
// Position zwischen Wegpunkten mit Kochanek-Bartels interpolieren
Camera.Position = Vector3.Hermite(begin.Item1, beginTangent, end.Item1, endTangent, amount);
// Camera-LookAt Vektor mit Quaternion Slerp interpolieren
Camera.Look(Vector3.Transform(Vector3.Forward, Quaternion.Slerp(begin.Item2, end.Item2, amount)));
//Camera.LookAt(Vector3.Up);
base.Update(gameTime);
}
public override void Update(GameTime gameTime)
{
current += (float)gameTime.ElapsedGameTime.TotalSeconds;
total = Waypoints.Last().Item3;
if (current > total)
{
current = current % total;
}
int index = GetWaypointIndex(current);
Waypoint last = GetWaypoint(index - 1);
Waypoint begin = GetWaypoint(index);
Waypoint end = GetWaypoint(index + 1);
Vector3 beginTangent = GetTangent(index, Tension, Bias, Continuity);
Vector3 endTangent = GetTangent(index + 1, Tension, Bias, -Continuity);
float t0 = last.Item3;
float t1 = begin.Item3;
if (t0 > t1)
{
t0 -= total;
}
float amount = (current - t0) / (t1 - t0);
Camera.Position = Vector3.Hermite(begin.Item1, beginTangent, end.Item1, endTangent, amount);
Camera.Look(Vector3.Transform(Vector3.Forward, Quaternion.Slerp(begin.Item2, end.Item2, amount)));
//Camera.LookAt(Vector3.Up);
base.Update(gameTime);
}
