Force TTS/NDL calculation off if things take too long

This is kind of a random cut off, but if plotting the dive takes more than
a second and TTS/NDL is on, we force it off. Because the algorithm for
that is fundamentally quadratic in nature it can take a VERY long time -
getting users to think something is broken.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/qt-ui/mainwindow.cpp b/qt-ui/mainwindow.cpp
index f6dd1b37f..ee0e6f090 100644
--- a/qt-ui/mainwindow.cpp
+++ b/qt-ui/mainwindow.cpp
@@ -1226,6 +1226,12 @@ void MainWindow::on_profNdl_tts_clicked(bool triggered)
 	prefs.calcndltts = triggered;
 	TOOLBOX_PREF_PROFILE(calcndltts);
 }
+void MainWindow::turnOffNdlTts()
+{
+	const bool triggered = prefs.calcndltts = false;
+	TOOLBOX_PREF_PROFILE(calcndltts);
+}
+
 void MainWindow::on_profPhe_clicked(bool triggered)
 {
 	prefs.pp_graphs.phe = triggered;