/// <inheritdoc/>
public override void StartInteraction(DiagramInteractionEventArguments interaction)
{
var diagram = interaction.Diagram;
var mousePosition = interaction.MousePosition;
RiftStartDiagramPoint = diagram.GetDiagramPointFromViewPoint(mousePosition);
Mode = RiftMode.None;
X = mousePosition.X;
Y = mousePosition.Y;
RiftWidth = 0;
RiftHeight = 0;
_undoRiftCommand = new MoveNodesToCurrentPositionCommand(_nodesBeingRifted);
}
private void CheckIfRiftShouldStart(double riftDeltaX, double riftDeltaY)
{
if (Math.Abs(riftDeltaX) > MinimimDistanceToStartRift)
{
Mode = riftDeltaX > 0
? RiftMode.Right
: RiftMode.Left;
}
else if (Math.Abs(riftDeltaY) > MinimimDistanceToStartRift)
{
Mode = riftDeltaY > 0
? RiftMode.Down
: RiftMode.Up;
}
}
/// <inheritdoc/>
public override void StopInteraction(DiagramInteractionEventArguments interaction)
{
Mode = RiftMode.None;
_lastRiftDeltaX = 0;
_lastRiftDeltaY = 0;
if (_nodesBeingRifted == null)
{
return;
}
if (!interaction.IsCtrlKeyPressed)
{
foreach (var node in _nodesBeingRifted)
{
node.X = interaction.Diagram.SnapToGrid(node.X);
node.Y = interaction.Diagram.SnapToGrid(node.Y);
}
}
var doRiftCommand = new MoveNodesToCurrentPositionCommand(_nodesBeingRifted);
_transactor.Transact(doRiftCommand, _undoRiftCommand, null);
_nodesBeingRifted = null;
}
