From 69eedb92ad744a921e62ab54d48e6942733c03b3 Mon Sep 17 00:00:00 2001
From: namdre <jakob.erdmann@dlr.de>
Date: Thu, 22 Mar 2018 18:29:19 +0100
Subject: [PATCH] better scaling for long vehicles. refs #3907

---
 src/guisim/GUIBaseVehicle.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/guisim/GUIBaseVehicle.cpp b/src/guisim/GUIBaseVehicle.cpp
index a34c881415d0..57c8fb90cd03 100644
--- a/src/guisim/GUIBaseVehicle.cpp
+++ b/src/guisim/GUIBaseVehicle.cpp
@@ -898,6 +898,10 @@ GUIBaseVehicle::drawOnPos(const GUIVisualizationSettings& s, const Position& pos
     // scale
     const double upscale = s.vehicleSize.getExaggeration(s);
     double upscaleLength = upscale;
+    if (upscale > 1 && length > 5) {
+        // reduce the length/width ratio because this is not usefull at high zoom
+        upscaleLength *= (5 + sqrt(length - 5)) / length;
+    }
     glScaled(upscale, upscaleLength, 1);
     /*
         MSLCM_DK2004 &m2 = static_cast<MSLCM_DK2004&>(veh->getLaneChangeModel());