From b98db4a8d8f94db77b7cc890f11ff1d905584501 Mon Sep 17 00:00:00 2001
From: Josh Yelon <jyelon@gmail.com>
Date: Thu, 28 Aug 2008 06:46:12 +0000
Subject: [PATCH] Added tangent computation and removed dead vertices

---
 pandatool/src/maxegg/maxToEggConverter.cxx | 9 ++++++++-
 pandatool/src/maxegg/maxToEggConverter.h   | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/pandatool/src/maxegg/maxToEggConverter.cxx b/pandatool/src/maxegg/maxToEggConverter.cxx
index b9219b8e56..2a4a2e52de 100755
--- a/pandatool/src/maxegg/maxToEggConverter.cxx
+++ b/pandatool/src/maxegg/maxToEggConverter.cxx
@@ -131,7 +131,12 @@ bool MaxToEggConverter::convert(MaxEggOptions *options) {
         
         reparent_decals(_egg_data);
     }
-    
+
+    if (all_ok) {
+        _egg_data->recompute_tangent_binormal_auto();
+        _egg_data->remove_unused_vertices(true);
+    }
+
     if (all_ok) {
         Filename fn = Filename::from_os_specific(_options->_file_name);
         return _egg_data->write_egg(fn);
@@ -869,6 +874,7 @@ get_panda_material(Mtl *mtl, MtlID matID) {
     pandaMat._any_diffuse = false;
     pandaMat._any_opacity = false;
     pandaMat._any_gloss = false;
+    pandaMat._any_normal = false;
 
     // If it's a multi-material, dig down.
         
@@ -1120,6 +1126,7 @@ void MaxToEggConverter::analyze_normal_maps(PandaMaterial &pandaMat, Texmap *mat
     if (mat == 0) return;
     
     if (mat->ClassID() == Class_ID(BMTEX_CLASS_ID, 0)) {
+        pandaMat._any_normal = true;
         BitmapTex *ntex = (BitmapTex *)mat;
 
         Filename fullpath, outpath;
diff --git a/pandatool/src/maxegg/maxToEggConverter.h b/pandatool/src/maxegg/maxToEggConverter.h
index e1f586ef7e..e24f7ec89f 100755
--- a/pandatool/src/maxegg/maxToEggConverter.h
+++ b/pandatool/src/maxegg/maxToEggConverter.h
@@ -52,6 +52,7 @@ class MaxToEggConverter {
         bool _any_diffuse;
         bool _any_opacity;
         bool _any_gloss;
+        bool _any_normal;
     };
     typedef std::map<Mtl*,PandaMaterial> MaterialMap;
     MaxEggOptions    *_options;