From 626281977eb2d0bc5c3549ce0409b0b5e4ed1cca Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Thu, 12 Nov 2015 19:40:31 +0100
Subject: [PATCH] Read NiLODNode (Bug #3008)

---
 components/nif/niffile.cpp |  2 ++
 components/nif/node.hpp    | 36 ++++++++++++++++++++++++++++++++++++
 components/nif/record.hpp  |  2 ++
 3 files changed, 40 insertions(+)

diff --git a/components/nif/niffile.cpp b/components/nif/niffile.cpp
index 1db9c8ccf..1387a97b0 100644
--- a/components/nif/niffile.cpp
+++ b/components/nif/niffile.cpp
@@ -48,6 +48,8 @@ static std::map<std::string,RecordFactoryEntry> makeFactory()
 {
     std::map<std::string,RecordFactoryEntry> newFactory;
     newFactory.insert(makeEntry("NiNode",                     &construct <NiNode>                      , RC_NiNode                        ));
+    newFactory.insert(makeEntry("NiSwitchNode",               &construct <NiSwitchNode>                , RC_NiSwitchNode                  ));
+    newFactory.insert(makeEntry("NiLODNode",                  &construct <NiLODNode>                   , RC_NiLODNode                     ));
     newFactory.insert(makeEntry("AvoidNode",                  &construct <NiNode>                      , RC_AvoidNode                     ));
     newFactory.insert(makeEntry("NiBSParticleNode",           &construct <NiNode>                      , RC_NiBSParticleNode              ));
     newFactory.insert(makeEntry("NiBSAnimationNode",          &construct <NiNode>                      , RC_NiBSAnimationNode             ));
diff --git a/components/nif/node.hpp b/components/nif/node.hpp
index 943ddcc66..326e9802f 100644
--- a/components/nif/node.hpp
+++ b/components/nif/node.hpp
@@ -250,5 +250,41 @@ struct NiRotatingParticles : Node
     }
 };
 
+// A node used as the base to switch between child nodes, such as for LOD levels.
+struct NiSwitchNode : public NiNode
+{
+    void read(NIFStream *nif)
+    {
+        NiNode::read(nif);
+        nif->getInt(); // unknown
+    }
+};
+
+struct NiLODNode : public NiSwitchNode
+{
+    osg::Vec3f lodCenter;
+
+    struct LODRange
+    {
+        float minRange;
+        float maxRange;
+    };
+    std::vector<LODRange> lodLevels;
+
+    void read(NIFStream *nif)
+    {
+        NiSwitchNode::read(nif);
+        lodCenter = nif->getVector3();
+        unsigned int numLodLevels = nif->getUInt();
+        for (unsigned int i=0; i<numLodLevels; ++i)
+        {
+            LODRange r;
+            r.minRange = nif->getFloat();
+            r.maxRange = nif->getFloat();
+            lodLevels.push_back(r);
+        }
+    }
+};
+
 } // Namespace
 #endif
diff --git a/components/nif/record.hpp b/components/nif/record.hpp
index 1022802cc..bcbdba115 100644
--- a/components/nif/record.hpp
+++ b/components/nif/record.hpp
@@ -36,6 +36,8 @@ enum RecordType
 {
   RC_MISSING = 0,
   RC_NiNode,
+  RC_NiSwitchNode,
+  RC_NiLODNode,
   RC_NiBillboardNode,
   RC_AvoidNode,
   RC_NiTriShape,