private void canvas_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return;
}
if (_primitivePoints != null)
{
_primitivePoints.Add(e.Location);
_primitiveDrawer.Draw(_canvasGraphics, _drawingPen, _primitivePoints, _canvas);
}
var pointLocationFinder = PointLocationFinder.GetInstance();
var pointPositionMessage = _primitive switch
{
Polygon polygon when(button9.Focused || button10.Focused)
=> pointLocationFinder.GetPointPosition(polygon, e.Location).ToString(),
Edge edge when button11.Focused
=> pointLocationFinder.GetPointDirection(edge, e.Location).ToString(),
_ => null
};
if (!string.IsNullOrWhiteSpace(pointPositionMessage))
{
MessageBox.Show(pointPositionMessage);
}
}
