From 65a49bb6e4bc6cbd14feb065f55b798b4c1db362 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Fri, 16 Jan 2004 17:37:05 +0000
Subject: [PATCH] Oops, I originally had ramped the vasi/papi color transition
 the wrong way. So as you passed through the target glide slope from low to
 high it would be colored: red -> white -> small range of transition to red ->
 white. Now it goes the right way so you get: red -> smooth transition to ->
 white. You can tell you are getting high if you see the bottom vasi start to
 turn pink ... etc. etc. hopefully just like in real life.

---
 simgear/scene/tgdb/vasi.hxx | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/simgear/scene/tgdb/vasi.hxx b/simgear/scene/tgdb/vasi.hxx
index f36271a9..d86162d8 100644
--- a/simgear/scene/tgdb/vasi.hxx
+++ b/simgear/scene/tgdb/vasi.hxx
@@ -82,7 +82,7 @@ public:
             if ( angle_deg < ref - trans ) {
                 color = 0.0;
             } else if ( angle_deg < ref + trans ) {
-                color = (ref + trans - angle_deg) * (1 / (2 * trans) );
+                color = 1.0 - (ref + trans - angle_deg) * (1 / (2 * trans) );
             } else {
                 color = 1.0;
             }
@@ -97,7 +97,7 @@ public:
             if ( angle_deg < ref - trans ) {
                 color = 0.0;
             } else if ( angle_deg < ref + trans ) {
-                color = (ref + trans - angle_deg) * (1 / (2 * trans) );
+                color = 1.0 - (ref + trans - angle_deg) * (1 / (2 * trans) );
             } else {
                 color = 1.0;
             }
@@ -112,7 +112,7 @@ public:
             if ( angle_deg < ref - trans ) {
                 color = 0.0;
             } else if ( angle_deg < ref + trans ) {
-                color = (ref + trans - angle_deg) * (1 / (2 * trans) );
+                color = 1.0 - (ref + trans - angle_deg) * (1 / (2 * trans) );
             } else {
                 color = 1.0;
             }
@@ -127,7 +127,7 @@ public:
             if ( angle_deg < ref - trans ) {
                 color = 0.0;
             } else if ( angle_deg < ref + trans ) {
-                color = (ref + trans - angle_deg) * (1 / (2 * trans) );
+                color = 1.0 - (ref + trans - angle_deg) * (1 / (2 * trans) );
             } else {
                 color = 1.0;
             }
@@ -142,7 +142,7 @@ public:
             if ( angle_deg < ref - trans ) {
                 color = 0.0;
             } else if ( angle_deg < ref + trans ) {
-                color = (ref + trans - angle_deg) * (1 / (2 * trans) );
+                color = 1.0 - (ref + trans - angle_deg) * (1 / (2 * trans) );
             } else {
                 color = 1.0;
             }
@@ -157,7 +157,7 @@ public:
             if ( angle_deg < ref - trans ) {
                 color = 0.0;
             } else if ( angle_deg < ref + trans ) {
-                color = (ref + trans - angle_deg) * (1 / (2 * trans) );
+                color = 1.0 - (ref + trans - angle_deg) * (1 / (2 * trans) );
             } else {
                 color = 1.0;
             }
-- 
2.39.5