public void MouseMove(Point position)
{
if (_workspace == null || _workspace.InputService == null)
{
return;
}
lastPointerPosition = position;
var delta = lastPanPoint - position;
if (panning)
{
var vp = _workspace.ActiveViewPort;
var scale = vp.ViewHeight / Height;
var dx = vp.BottomLeft.X + delta.X * scale;
var dy = vp.BottomLeft.Y - delta.Y * scale;
_workspace.Update(activeViewPort: vp.Update(bottomLeft: new Point(dx, dy, vp.BottomLeft.Z)));
lastPanPoint = position;
firstSelectionPoint -= delta;
}
if (selecting)
{
var left = Math.Min(position.X, firstSelectionPoint.X);
var top = Math.Min(position.Y, firstSelectionPoint.Y);
var width = Math.Abs(position.X - firstSelectionPoint.X);
var height = Math.Abs(position.Y - firstSelectionPoint.Y);
var rect = new Rect(left, top, width, height);
var mode = position.X < firstSelectionPoint.X
? SelectionMode.PartialEntity
: SelectionMode.WholeEntity;
currentSelectionPoint = position;
UpdateSelectionRectangle(new SelectionState(rect, mode));
}
updateSnapPointsTask.ContinueWith(_ =>
{
var snapPoint = GetActiveModelPoint(position, updateSnapPointsCancellationTokenSource.Token);
CursorWorldLocationUpdated?.Invoke(this, snapPoint.WorldPoint);
CurrentSnapPointUpdated?.Invoke(this, snapPoint);
UpdateRubberBandLines(snapPoint.WorldPoint);
if ((_workspace.InputService.AllowedInputTypes & InputType.Point) == InputType.Point ||
selectingRectangle)
{
DrawSnapPoint(snapPoint, GetNextDrawSnapPointId());
}
}, updateSnapPointsCancellationTokenSource.Token).ConfigureAwait(false);
}
private void DrawSnapPoint(TransformedSnapPoint snapPoint, long drawId)
{
lock (lastDrawnSnapPointIdGate)
{
if (drawId > lastDrawnSnapPointId)
{
lastDrawnSnapPointId = drawId;
var snapDistance = _workspace.SettingsService.GetValue <double>(DisplaySettingsNames.SnapPointDistance);
snapDistance *= snapDistance;
var distSquared = (snapPoint.ControlPoint - lastPointerPosition).LengthSquared;
if (distSquared <= snapDistance && snapPoint.Kind != SnapPointKind.None)
{
CurrentSnapPointUpdated?.Invoke(this, snapPoint);
}
else
{
CurrentSnapPointUpdated?.Invoke(this, null);
}
}
}
}
