From 3e281f625debed685f97b789f7ea1035173b2468 Mon Sep 17 00:00:00 2001
From: Andrei Kortunov <andrei.kortunov@yandex.ru>
Date: Mon, 10 May 2021 20:10:27 +0400
Subject: [PATCH] Return check for distance when we try to reuse data (bug
 #6026)

---
 components/terrain/viewdata.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/components/terrain/viewdata.cpp b/components/terrain/viewdata.cpp
index e4d043ffc4..48e882ea7b 100644
--- a/components/terrain/viewdata.cpp
+++ b/components/terrain/viewdata.cpp
@@ -141,9 +141,9 @@ ViewData *ViewDataMap::getViewData(osg::Object *viewer, const osg::Vec3f& viewPo
         vd = found->second;
     needsUpdate = false;
 
-    if (!(vd->suitableToUse(activeGrid) && (vd->getViewPoint()-viewPoint).length2() < mReuseDistance*mReuseDistance && vd->getWorldUpdateRevision() >= mWorldUpdateRevision))
+    if (!vd->suitableToUse(activeGrid) || (vd->getViewPoint()-viewPoint).length2() >= mReuseDistance*mReuseDistance || vd->getWorldUpdateRevision() < mWorldUpdateRevision)
     {
-        float shortestDist = std::numeric_limits<float>::max();
+        float shortestDist = mReuseDistance*mReuseDistance;
         const ViewData* mostSuitableView = nullptr;
         for (const ViewData* other : mUsedViews)
         {
@@ -157,11 +157,16 @@ ViewData *ViewDataMap::getViewData(osg::Object *viewer, const osg::Vec3f& viewPo
                 }
             }
         }
-        if (mostSuitableView && mostSuitableView != vd)
+        if (mostSuitableView)
         {
             vd->copyFrom(*mostSuitableView);
             return vd;
         }
+        else
+        {
+            vd->setViewPoint(viewPoint);
+            needsUpdate = true;
+        }
     }
     if (!vd->suitableToUse(activeGrid))
     {