private void Canvas_MouseDown(object sender, MouseButtonEventArgs e)
{
_currentState |= State.LEFTMOUSE_DOWN;
if (_currentState.HasFlag(State.DRAWING))
{
_lastDownedPoint = GetDot(e.GetPosition(shapeCanvas).ToVector());
_movingPoint = GDot.FromCoord(e.GetPosition(shapeCanvas).ToVector());
if (_drawingShape == null)
{
if (_currentState.HasFlag(State.CIRCLE))
{
_drawingShape = GCircle.FromTwoDots(_lastDownedPoint, _movingPoint);
}
else if (_currentState.HasFlag(State.LINE))
{
_drawingShape = GLine.FromTwoDots(_lastDownedPoint, _movingPoint);
}
else if (_currentState.HasFlag(State.DOT))
{
_drawingShape = _lastDownedPoint;
}
_drawingShape.Control.Stroke = Brushes.Blue;
shapeCanvas.Children.Add(_drawingShape.Control);
}
}
}