private void ClearAll()
{
//delete currently drawing polygon
CurrentlyDrawingPolygon?.DeleteDrawing();
if (CurrentlyDrawingPolygon != null)
{
CurrentLine?.DeleteDrawing();
}
CurrentLine = null;
CurrentlyDrawingPolygon = null;
PolygonDrawing = false;
//delete polygons
foreach (var pol in Polygons)
{
pol.Value.DeleteDrawing();
}
//clear RelationIcon
RelationIcon.RelationCounter.Clear();
//clear variables
ClearVariables();
//set pointerbutton
PointerButton.IsChecked = true;
}
private bool ClearUnfinishedPolygon()
{
if (CurrentlyDrawingPolygon != null)
{
MessageBoxResult ans = MessageBox.Show("If you change mode during drawing,\n" +
"currently drawn polygon will be deleted!\n" +
"Do you want to continue drawing?", Globals.WindowName, MessageBoxButton.YesNo, MessageBoxImage.Question);
if (ans == MessageBoxResult.Yes)
{
return(false);
}
else
{
CurrentlyDrawingPolygon.DeleteDrawing();
CurrentLine?.DeleteDrawing();
CurrentLine = null;
CurrentlyDrawingPolygon = null;
PolygonDrawing = false;
}
}
return(true);
}