From f47c3003a79f3c0a00ca82f12101ff62b28db2b6 Mon Sep 17 00:00:00 2001
From: ericchristoffersen
 <46055145+ericchristoffersen@users.noreply.github.com>
Date: Thu, 12 Nov 2020 16:49:32 -0800
Subject: [PATCH] Fix 3498 - truncate distances for display (#3663)

For distance display, better to truncate than to round up.
---
 src/Train/DialWindow.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Train/DialWindow.cpp b/src/Train/DialWindow.cpp
index a54a47b1e..3753e3eb0 100644
--- a/src/Train/DialWindow.cpp
+++ b/src/Train/DialWindow.cpp
@@ -253,7 +253,11 @@ DialWindow::telemetryUpdate(const RealtimeData &rtData)
 
     case RealtimeData::Distance:
     case RealtimeData::LapDistance:
+    case RealtimeData::RouteDistance:
         if (!GlobalContext::context()->useMetricUnits) value *= MILES_PER_KM;
+        // Default floating point rounds to nearest. For distance we'd like to not see the
+        // next biggest number until we're actually there... Truncate to meter.
+        value = ((double)((unsigned)(value * 1000.))) / 1000.;
         valueLabel->setText(QString("%1").arg(value, 0, 'f', 3));
         break;