/// <summary>
/// Overridden. Performs picking in canvas coordinates if <see cref="PickMode">PickMode</see>
/// is false.
/// </summary>
/// <remarks>
/// Due to the implementation of the GraphicsPath object, picking in canvas coordinates
/// is more accurate, but will introduce a significant performance hit.
/// </remarks>
protected override bool PickAfterChildren(PPickPath pickPath)
{
if (pickMode == PPath.PathPickMode.Fast)
{
return(base.PickAfterChildren(pickPath));
}
else
{
return(Intersects(pickPath.PickBounds, pickPath.GetPathTransformTo(this)));
}
}
/// <summary>
/// Animates the camera's view to keep the control node on the screen and at 100
/// percent scale with minimal view movement.
/// </summary>
/// <param name="aCamera">The camera whose view will be animated.</param>
/// <param name="aControlNode">The control node to animate to.</param>
/// <param name="path">The pick path through which the control node was picked.</param>
/// <param name="duration">The length of the animation.</param>
/// <returns>
/// The activity that animates the camera's view to the control node.
/// </returns>
public virtual PActivity DirectCameraViewToControl(PCamera aCamera, PControl aControlNode, PPickPath path, int duration)
{
Matrix originalViewMatrix = aCamera.ViewMatrix;
// Scale the canvas to include
SizeFx s = new SizeFx(1, 0);
s = aControlNode.GlobalToLocal(s);
float scaleFactor = s.Width / aCamera.ViewScale;
PointFx scalePoint = PUtil.CenterOfRectangle(aControlNode.GlobalFullBounds);
if (scaleFactor != 1)
{
aCamera.ScaleViewBy(scaleFactor, scalePoint.X, scalePoint.Y);
}
// Pan the canvas to include the view bounds with minimal canvas
// movement.
aCamera.AnimateViewToPanToBounds(aControlNode.GlobalFullBounds, 0);
// Get rid of any white space. The canvas may be panned and
// zoomed in to do this. But make sure not stay constrained by max
// magnification.
//FillViewWhiteSpace(aCamera);
Matrix resultingMatrix = aCamera.ViewMatrix;
aCamera.ViewMatrix = originalViewMatrix;
PControl controlNode = (PControl)aControlNode;
// Animate the canvas so that it ends up with the given
// view transform.
PActivity animateCameraViewActivity = AnimateCameraViewMatrixTo(aCamera, resultingMatrix, duration);
aCamera.Root.WaitForActivities();
Matrix pathTransform = path.GetPathTransformTo(controlNode);
PointFx point = new PointFx(controlNode.X, controlNode.Y);
PointFx pf = MatrixExtensions.Transform(pathTransform, point);
controlNode.ControlLocation = new System.Drawing.Point((int)pf.X, (int)pf.Y);
controlNode.CurrentCanvas = path.TopCamera.Canvas;
controlNode.Editing = true;
return(animateCameraViewActivity);
}