protected override void Update(TimeSpan gameTime)
{
this.timeAcumulator += gameTime.TotalSeconds;
double phase = this.timeAcumulator % Period;
if (phase < StartPeriod)
{
this.Camera.Transform.LookAt(this.startLookAt);
}
else if (phase < EaseInPeriod)
{
float lerp = (float)((phase - StartPeriod) / StartPeriod);
this.Camera.Transform.LookAt(Vector3.Lerp(this.startLookAt, this.endLookAt, lerp));
}
else if (phase < EndPeriod)
{
this.Camera.Transform.LookAt(this.endLookAt);
}
else if (phase < EaseOutPeriod)
{
float lerp = (float)((phase - EndPeriod) / StartPeriod);
lerp = (float)easing.Ease(lerp);
this.Camera.Transform.LookAt(Vector3.Lerp(this.endLookAt, this.startLookAt, lerp));
}
}
private static void OnTimerTick(RadCartesianChart chart)
{
CameraInfo cameraInfo = GetOrCreateCameraInfo(chart);
double durationInSeconds = 1.5;
Point targetOffset = new Point(100, -75);
TimeSpan timeSpan = DateTime.Now - cameraInfo.initialAnimationDateTime;
if (durationInSeconds < timeSpan.TotalSeconds)
{
cameraInfo.initialAnimationTimer.Stop();
cameraInfo.initialAnimationTimer = null;
return;
}
double progress = timeSpan.TotalSeconds / durationInSeconds;
EasingFunctionBase ease = new BackEase {
EasingMode = EasingMode.EaseIn
};
double easedProgress = ease.Ease(progress);
double hOffset = easedProgress * targetOffset.X;
ease = new CubicEase {
EasingMode = EasingMode.EaseInOut
};
easedProgress = ease.Ease(progress);
double vOffset = easedProgress * targetOffset.Y;
MoveCamera(chart, new Point(hOffset, vOffset));
}
