private void Select(WindowsRect selectionRect, bool isSingleSelection)
{
var editableCurve = SelectedCurve as IEditableCurveViewModel;
if (editableCurve == null)
{
return;
}
// TODO: move this to the curve (especially hit testing)
IList <ControlPointViewModelBase> selectedPoints = editableCurve.ControlPoints.Where(c => selectionRect.Contains(c.ActualPoint)).ToList();
if (selectedPoints.Count > 1 && isSingleSelection)
{
var rectCenter = new WindowsPoint(selectionRect.Left + selectionRect.Width * 0.5, selectionRect.Top + selectionRect.Height * 0.5);
var closest = CurveHelper.GetClosestPoint(selectedPoints, rectCenter);
selectedPoints = new[] { closest };
}
switch (Keyboard.Modifiers)
{
case ModifierKeys.None:
ClearPointSelection();
goto case ModifierKeys.Shift;
case ModifierKeys.Shift:
// FIXME: do this atomically in the curve
foreach (var p in selectedPoints.Where(p => !p.IsSelected))
{
SelectedControlPoints.Add(p);
p.IsSelected = true;
}
break;
case ModifierKeys.Control:
// FIXME: do this atomically in the curve
foreach (var p in selectedPoints.Where(p => p.IsSelected))
{
SelectedControlPoints.Remove(p);
p.IsSelected = false;
}
break;
}
}
public ControlPointViewModelBase GetClosestPoint(WindowsPoint position, double maximumDistance)
{
return(CurveHelper.GetClosestPoint(ControlPoints, position, maximumDistance));
}