//****************************************************************
// Animation - Methods to animate the camera's view.
//****************************************************************
/// <summary>
/// Animate the camera's view from its current matrix when the activity starts
/// to a new matrix that centers the given bounds in the camera layers' coordinate
/// system into the camera's view bounds.
/// </summary>
/// <param name="centerBounds">The bounds to center the view on.</param>
/// <param name="shouldScaleToFit">
/// Indicates whether the camera should scale it's view when necessary to fully fit
/// the given bounds within the camera's view bounds.
/// </param>
/// <param name="duration">The amount of time that the animation should take.</param>
/// <returns>
/// The newly scheduled activity, if the duration is greater than 0; else null.
/// </returns>
/// <remarks>
/// If the duration is 0 then the view will be transformed immediately, and null will
/// be returned. Else a new PTransformActivity will get returned that is set to
/// animate the camera’s view matrix to the new bounds. If shouldScaleToFit is true,
/// then the camera will also scale its view so that the given bounds fit fully within
/// the camera's view bounds, else the camera will maintain its original scale.
/// </remarks>
public virtual PTransformActivity AnimateViewToCenterBounds(RectangleF centerBounds, bool shouldScaleToFit, long duration)
{
SizeF delta = PUtil.DeltaRequiredToCenter(ViewBounds, centerBounds);
PMatrix newMatrix = ViewMatrix;
newMatrix.TranslateBy(delta.Width, delta.Height);
if (shouldScaleToFit)
{
float s = Math.Min(ViewBounds.Width / centerBounds.Width, ViewBounds.Height / centerBounds.Height);
PointF c = PUtil.CenterOfRectangle(centerBounds);
newMatrix.ScaleBy(s, c.X, c.Y);
}
return(AnimateViewToMatrix(newMatrix, duration));
}
/// <summary>
/// Caches the information necessary to animate from the current view bounds to the
/// specified centerBounds
/// </summary>
/// <param name="centerBounds">The bounds to center the view on.</param>
/// <param name="scaleToFit">
/// Indicates whether the camera should scale it's view when necessary to fully fit
/// the given bounds within the camera's view bounds.
/// </param>
/// <returns>The new view matrix to center the specified bounds.</returns>
private Matrix CacheViewBounds(RectangleFx centerBounds, bool scaleToFit)
{
RectangleFx viewBounds = ViewBounds;
// Initialize the image to the union of the current and destination bounds
RectangleFx imageBounds = viewBounds;
imageBounds = RectangleFxtensions.Union(imageBounds, centerBounds);
AnimateViewToCenterBounds(imageBounds, scaleToFit, 0);
imageAnimateBounds = ViewBounds;
// Now create the actual cache image that we will use to animate fast
System.Drawing.Image buffer = PaintBuffer;
Color fBrush = Color.White;
if (Brush != Color.Transparent)
{
fBrush = Brush;
}
ToImage(buffer, fBrush);
// Do this after the painting above!
imageAnimate = true;
// Return the bounds to the previous viewbounds
AnimateViewToCenterBounds(viewBounds, scaleToFit, 0);
// The code below is just copied from animateViewToCenterBounds to create the
// correct transform to center the specified bounds
SizeFx delta = PUtil.DeltaRequiredToCenter(viewBounds, centerBounds);
Matrix newMatrix = ViewMatrix;
newMatrix = MatrixExtensions.TranslateBy(newMatrix, delta.Width, delta.Height);
if (scaleToFit)
{
float s = Math.Min(viewBounds.Width / centerBounds.Width, viewBounds.Height / centerBounds.Height);
PointFx center = PUtil.CenterOfRectangle(centerBounds);
newMatrix = MatrixExtensions.ScaleBy(newMatrix, s, center.X, center.Y);
}
return(newMatrix);
}
//****************************************************************
// Animation - Methods to animate the camera's view.
//****************************************************************
/// <summary>
/// Animate the camera's view from its current matrix when the activity starts
/// to a new matrix that centers the given bounds in the camera layers' coordinate
/// system into the camera's view bounds.
/// </summary>
/// <param name="centerBounds">The bounds to center the view on.</param>
/// <param name="shouldScaleToFit">
/// Indicates whether the camera should scale it's view when necessary to fully fit
/// the given bounds within the camera's view bounds.
/// </param>
/// <param name="duration">The amount of time that the animation should take.</param>
/// <returns>
/// The newly scheduled activity, if the duration is greater than 0; else null.
/// </returns>
/// <remarks>
/// If the duration is 0 then the view will be transformed immediately, and null will
/// be returned. Else a new PTransformActivity will get returned that is set to
/// animate the camera’s view matrix to the new bounds. If shouldScaleToFit is true,
/// then the camera will also scale its view so that the given bounds fit fully within
/// the camera's view bounds, else the camera will maintain its original scale.
/// </remarks>
public virtual PTransformActivity AnimateViewToCenterBounds(RectangleFx centerBounds, bool shouldScaleToFit, long duration)
{
SizeFx delta = PUtil.DeltaRequiredToCenter(ViewBounds, centerBounds);
Matrix newMatrix = ViewMatrix;
newMatrix = MatrixExtensions.TranslateBy(newMatrix, delta.Width, delta.Height);
if (shouldScaleToFit)
{
float s = Math.Min(ViewBounds.Width / centerBounds.Width, ViewBounds.Height / centerBounds.Height);
if (s != float.PositiveInfinity && s != 0)
{
PointFx c = PUtil.CenterOfRectangle(centerBounds);
MatrixExtensions.ScaleBy(newMatrix, s, c.X, c.Y);
}
}
return(AnimateViewToMatrix(newMatrix, duration));
}
