From bde5d1d3c9e82bad50711b1319e5ba39f0a4c891 Mon Sep 17 00:00:00 2001
From: cybutek <admin@cybutek.net>
Date: Sun, 28 May 2017 18:45:05 +0100
Subject: [PATCH] Angle clamps check for parameter validity (not NaN or
 Infinity) before processing.

---
 Documents/CHANGES.txt                 |  1 +
 KerbalEngineer/Helpers/AngleHelper.cs | 96 +++++++++++++++------------
 2 files changed, 53 insertions(+), 44 deletions(-)

diff --git a/Documents/CHANGES.txt b/Documents/CHANGES.txt
index e03c092f..937253ec 100644
--- a/Documents/CHANGES.txt
+++ b/Documents/CHANGES.txt
@@ -1,4 +1,5 @@
 1.1.3.0, 2017-05-28, KSP 1.3.0 #1804
+    Fixed: Check for NaN and Infinities before clamping angles, resolving a hang state caused by the Intercept Angle readout.
     Added: Setting for enabling/disabling whether the toolbar icon in-flight activates on mouse hover.
     Added: Body category with the following readouts:
         Body Name
diff --git a/KerbalEngineer/Helpers/AngleHelper.cs b/KerbalEngineer/Helpers/AngleHelper.cs
index e6ea1fd5..e4eb548f 100644
--- a/KerbalEngineer/Helpers/AngleHelper.cs
+++ b/KerbalEngineer/Helpers/AngleHelper.cs
@@ -1,80 +1,88 @@
-// 
-//     Kerbal Engineer Redux
-// 
-//     Copyright (C) 2014 CYBUTEK
-// 
-//     This program is free software: you can redistribute it and/or modify
-//     it under the terms of the GNU General Public License as published by
-//     the Free Software Foundation, either version 3 of the License, or
-//     (at your option) any later version.
-// 
-//     This program is distributed in the hope that it will be useful,
-//     but WITHOUT ANY WARRANTY; without even the implied warranty of
-//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//     GNU General Public License for more details.
-// 
-//     You should have received a copy of the GNU General Public License
-//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-// 
+// Kerbal Engineer Redux
+//
+// Copyright (C) 2014 CYBUTEK
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of the GNU
+// General Public License as published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+// even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with this program. If not,
+// see <http://www.gnu.org/licenses/>.
 
 namespace KerbalEngineer.Helpers
 {
     using UnityEngine;
+    using Extensions;
 
     public static class AngleHelper
     {
         public static double Clamp180(double angle)
         {
-            if (angle < -180.0)
+            if (angle.IsValid())
             {
-                do
+                if (angle < -180.0)
                 {
-                    angle += 360.0;
+                    do
+                    {
+                        angle += 360.0;
+                    }
+                    while (angle < -180.0);
                 }
-                while (angle < -180.0);
-            }
-            else if (angle > 180.0)
-            {
-                do
+                else if (angle > 180.0)
                 {
-                    angle -= 360.0;
+                    do
+                    {
+                        angle -= 360.0;
+                    }
+                    while (angle > 180.0);
                 }
-                while (angle > 180.0);
             }
+
             return angle;
         }
 
         public static double Clamp360(double angle)
         {
-            if (angle < 0.0)
+            if (angle.IsValid())
             {
-                do
+                if (angle < 0.0)
                 {
-                    angle += 360.0;
+                    do
+                    {
+                        angle += 360.0;
+                    }
+                    while (angle < 0.0);
                 }
-                while (angle < 0.0);
-            }
-            else if (angle >= 360.0)
-            {
-                do
+                else if (angle >= 360.0)
                 {
-                    angle -= 360.0;
+                    do
+                    {
+                        angle -= 360.0;
+                    }
+                    while (angle >= 360.0);
                 }
-                while (angle >= 360.0);
             }
+
             return angle;
         }
 
         public static double ClampBetween(double value, double minimum, double maximum)
         {
-            while (value < minimum)
+            if (value.IsValid() && minimum.IsValid() && maximum.IsValid())
             {
-                value += maximum;
-            }
+                while (value < minimum)
+                {
+                    value += maximum;
+                }
 
-            while (value > maximum)
-            {
-                value -= maximum;
+                while (value > maximum)
+                {
+                    value -= maximum;
+                }
             }
 
             return value;