private void CellCanvas_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!_isDrawing)
{
CellCanvas.CaptureMouse();
CellCanvas.MouseMove += CellCanvas_PreviewMouseMove;
CellCanvas.PreviewMouseRightButtonDown += CellCanvas_PreviewMouseRightButtonDown;
TestPolyline.Points.Clear();
TestPolygon.Points.Clear();
CellCanvas.Children.Clear();
_isDrawing = true;
if (LineRadioButton.IsChecked == true)
{
TestPolyline.Points.Add(e.GetPosition(CellCanvas));
}
else
{
TestPolygon.Points.Add(e.GetPosition(CellCanvas));
}
}
if (LineRadioButton.IsChecked == true)
{
TestPolyline.Points.Add(e.GetPosition(CellCanvas));
}
else
{
TestPolygon.Points.Add(e.GetPosition(CellCanvas));
}
}
private void CellCanvas_PreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
_isDrawing = false;
CellCanvas.MouseMove -= CellCanvas_PreviewMouseMove;
CellCanvas.PreviewMouseRightButtonDown -= CellCanvas_PreviewMouseRightButtonDown;
CellCanvas.ReleaseMouseCapture();
var cells = LineRadioButton.IsChecked == true?GetPolyLineRegion(TestPolyline.Points) : GetPolygonRegion(TestPolygon.Points);
foreach (var cell in cells)
{
var grid = new Rectangle();
grid.Fill = Brushes.Green;
Canvas.SetLeft(grid, cell.X * GRID_SIZE);
Canvas.SetTop(grid, cell.Y * GRID_SIZE);
grid.Width = grid.Height = GRID_SIZE;
CellCanvas.Children.Add(grid);
}
}
