/// <summary>
/// Applies a previously set constraint to the camera's view matrix.
/// </summary>
public virtual void ApplyViewConstraints()
{
if (viewConstraint == CameraViewConstraint.None)
{
return;
}
RectangleF layerBounds = GlobalToLocal(UnionOfLayerFullBounds);
SizeF constraintDelta = new SizeF(0, 0);
switch (viewConstraint)
{
case CameraViewConstraint.All:
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
case CameraViewConstraint.Center:
layerBounds.Location = PUtil.CenterOfRectangle(layerBounds);
layerBounds.Width = 0;
layerBounds.Height = 0;
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
}
viewMatrix.TranslateBy(-constraintDelta.Width, -constraintDelta.Height);
}
/// <summary>
/// Applies a previously set constraint to the camera's view matrix.
/// </summary>
public virtual void ApplyViewConstraints()
{
if (viewConstraint == CameraViewConstraint.None)
{
return;
}
RectangleFx layerBounds = GlobalToLocal(UnionOfLayerFullBounds);
SizeFx constraintDelta = new SizeFx(0, 0);
switch (viewConstraint)
{
case CameraViewConstraint.All:
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
case CameraViewConstraint.Center:
PointFx layerLocation = PUtil.CenterOfRectangle(layerBounds);
//layerBounds.Width = 0;
//layerBounds.Height = 0;
layerBounds = new RectangleFx(layerLocation.X, layerLocation.Y, 0, 0);
constraintDelta = PUtil.DeltaRequiredToContain(ViewBounds, layerBounds);
break;
}
this.viewMatrix = MatrixExtensions.TranslateBy(viewMatrix, -constraintDelta.Width, -constraintDelta.Height);
}
/// <summary>
/// Pan the camera's view from its current matrix when the activity starts to a new
/// matrix so that the view bounds will contain (if possible, intersect if not
/// possible) the new bounds in the camera layers' coordinate system.
/// </summary>
/// <param name="panToBounds">The bounds to pan the view to.</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.
/// </remarks>
public virtual PTransformActivity AnimateViewToPanToBounds(RectangleF panToBounds, long duration)
{
SizeF delta = PUtil.DeltaRequiredToContain(ViewBounds, panToBounds);
if (delta.Width != 0 || delta.Height != 0)
{
if (duration == 0)
{
TranslateViewBy(-delta.Width, -delta.Height);
}
else
{
PMatrix m = ViewMatrix;
m.TranslateBy(-delta.Width, -delta.Height);
return(AnimateViewToMatrix(m, duration));
}
}
return(null);
}
