public Camera()
{
position = Vector2.Zero;
zoom = 1.0f;
transformMatrixDirty = true;
motionState = CameraMotionState.Fixed;
}
public Camera()
{
position = Vector2.Zero;
zoom = 1.0f;
transformMatrixDirty = true;
motionState = CameraMotionState.Fixed;
}
/// <summary>
/// Pans the camera to a specified point in the world with a given duration.
/// </summary>
/// <param name="target">The target point in world space.</param>
/// <param name="duration">How long the pan should take.</param>
public void PanTo(Vector2 target, TimeSpan duration)
{
panOrigin = Position;
panTarget = target;
panDuration = duration;
panTimeLeft = duration;
motionState = CameraMotionState.Panning;
}
/// <summary>
/// Moves the camera immediately to the end of the current pan.
/// </summary>
public void CancelPan()
{
if (motionState == CameraMotionState.Panning)
{
Position = panTarget;
motionState = CameraMotionState.Fixed;
if (PanCompleted != null)
{
PanCompleted();
}
}
}
public void Update(GameTime gameTime)
{
// Update panning motion
if (motionState == CameraMotionState.Panning)
{
panTimeLeft -= gameTime.ElapsedGameTime;
if (panTimeLeft < TimeSpan.Zero)
{
panTimeLeft = TimeSpan.Zero;
motionState = CameraMotionState.Fixed;
Position = panTarget;
if (PanCompleted != null)
{
PanCompleted();
}
}
else
{
double panPercentage = (panDuration.TotalMilliseconds - panTimeLeft.TotalMilliseconds) / panDuration.TotalMilliseconds;
Position = Vector2.SmoothStep(panOrigin, panTarget, (float)panPercentage);
}
}
}
/// <summary>
/// Moves the camera immediately to the end of the current pan.
/// </summary>
public void CancelPan()
{
if (motionState == CameraMotionState.Panning)
{
Position = panTarget;
motionState = CameraMotionState.Fixed;
if (PanCompleted != null)
{
PanCompleted();
}
}
}
public void Update(GameTime gameTime)
{
// Update panning motion
if (motionState == CameraMotionState.Panning)
{
panTimeLeft -= gameTime.ElapsedGameTime;
if (panTimeLeft < TimeSpan.Zero)
{
panTimeLeft = TimeSpan.Zero;
motionState = CameraMotionState.Fixed;
Position = panTarget;
if (PanCompleted != null)
{
PanCompleted();
}
}
else
{
double panPercentage = (panDuration.TotalMilliseconds - panTimeLeft.TotalMilliseconds) / panDuration.TotalMilliseconds;
Position = Vector2.SmoothStep(panOrigin, panTarget, (float)panPercentage);
}
}
}
/// <summary>
/// Pans the camera to a specified point in the world with a given duration.
/// </summary>
/// <param name="target">The target point in world space.</param>
/// <param name="duration">How long the pan should take.</param>
public void PanTo(Vector2 target, TimeSpan duration)
{
panOrigin = Position;
panTarget = target;
panDuration = duration;
panTimeLeft = duration;
motionState = CameraMotionState.Panning;
}
