From 4e3a369fcacd4a5e843cf6a4745c8ec9a5427fff Mon Sep 17 00:00:00 2001
From: Jakob Erdmann <jakob.erdmann@dlr.de>
Date: Thu, 8 May 2014 07:20:38 +0000
Subject: [PATCH] added lane coloring by angle refs #36 (to figure out
 directions without connection arrows)

git-svn-id: file:///home/behr_mi/git/sumo_synched/trunk/sumo@16315 afbd958f-9f77-42d5-a016-97a22340ccf4
---
 src/guisim/GUILane.cpp                        | 30 +++++++++++++++----
 src/guisim/GUILane.h                          |  3 ++
 .../gui/settings/GUIVisualizationSettings.cpp |  1 +
 3 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/src/guisim/GUILane.cpp b/src/guisim/GUILane.cpp
index 9a892e6a9cb4..89df93e1a414 100644
--- a/src/guisim/GUILane.cpp
+++ b/src/guisim/GUILane.cpp
@@ -715,12 +715,6 @@ GUILane::getEdgeLaneNumber() const {
 }
 
 
-void
-GUILane::setColor(const GUIVisualizationSettings& s) const {
-    GLHelper::setColor(s.laneColorer.getScheme().getColor(getColorValue(s.laneColorer.getActive())));
-}
-
-
 SUMOReal
 GUILane::getStoredEdgeTravelTime() const {
     MSEdgeWeightsStorage& ews = MSNet::getInstance()->getWeightsStorage();
@@ -733,6 +727,30 @@ GUILane::getStoredEdgeTravelTime() const {
     }
 }
 
+
+void
+GUILane::setColor(const GUIVisualizationSettings& s) const {
+    const GUIColorer& c = s.laneColorer;
+    if (!setFunctionalColor(c.getActive())) {
+        GLHelper::setColor(c.getScheme().getColor(getColorValue(c.getActive())));
+    }
+}
+
+
+bool
+GUILane::setFunctionalColor(size_t activeScheme) const {
+    switch (activeScheme) {
+        case 18: {
+            SUMOReal hue = RAD2DEG(myShape.beginEndAngle()) + 180; // [0-360]
+            GLHelper::setColor(RGBColor::fromHSV(hue, 1., 1.));
+            return true;
+        }
+        default:
+            return false;
+    }
+}
+
+
 SUMOReal
 GUILane::getColorValue(size_t activeScheme) const {
     switch (activeScheme) {
diff --git a/src/guisim/GUILane.h b/src/guisim/GUILane.h
index 5dbf43a18ab5..233d43b31fc8 100644
--- a/src/guisim/GUILane.h
+++ b/src/guisim/GUILane.h
@@ -253,6 +253,9 @@ class GUILane : public MSLane, public GUIGlObject {
     /// @brief gets the color value according to the current scheme index
     SUMOReal getColorValue(size_t activeScheme) const;
 
+    /// @brief sets the color according to the current scheme index and some lane function
+    bool setFunctionalColor(size_t activeScheme) const;
+
     /// @brief sets the color according to the currente settings
     void setColor(const GUIVisualizationSettings& s) const;
 
diff --git a/src/utils/gui/settings/GUIVisualizationSettings.cpp b/src/utils/gui/settings/GUIVisualizationSettings.cpp
index 7b63043750b7..6a86300ab536 100644
--- a/src/utils/gui/settings/GUIVisualizationSettings.cpp
+++ b/src/utils/gui/settings/GUIVisualizationSettings.cpp
@@ -150,6 +150,7 @@ GUIVisualizationSettings::GUIVisualizationSettings()
     scheme.addColor(RGBColor::GREEN, (SUMOReal)2.0);
     scheme.addColor(RGBColor::BLUE, (SUMOReal)4.0);
     laneColorer.addScheme(scheme);
+    laneColorer.addScheme(GUIColorScheme("by angle", RGBColor::YELLOW, "", true));
 
 
     /// add vehicle coloring schemes