General

- Added format auto-detection to most loaders
  - Simplified BaseImporter::CanRead() with some utility methods
  - improved fast_atof -> no overruns anymore. Fuck you, irrlicht.
  - added assimp_cmd tool to allow command line model processing. Mainly adebugging tool for internal purposes, but others might find it useful, too.
  - vc8/vc9: revision number is now written to DLL version header
  - mkutil: some batch scripts to simplify tagging & building of release versions
  - some API cleanup
  - fixing some doxygen markup (+now explicit use of @file <filename>)
  - Icon for assimp_view and assimp_cmd

3DS
  - Normal vectors are not anymore inverted in some cases
  - Improved pivot handling
  - Improved handling of x-flipped meshes

Collada
  - fixed a minor bug (visual_scene element)

LWS 
  - WIP implementation. No animations yet, some bugs and crashes.
  - Animation system remains disabled, WIP code
  - many test files for LWS, but most of them test the anim support, which is, read above, currently disabled.

STL
  - fixing a log warning which appears for every model
  - added binary&ascii test spider, exported from truespace

MD3 
  - Cleaning up output tags for automatically joined player models.


IRR
  - Fixing coordinate system issues. 
  - Instance handling improved.
  - Some of the reported crashes not yet fixed.

PretransformVertices
  - Numerous performance improvements.
  - Added config option to preserve the hierarchy during the step.

RemoveRedundantMaterials
  - Added config option to specify a list of materials which are kept in every case.

UNREAL
  - Added support for the old unreal data format (*.a,*.d,*.uc)
  - tested only with exports from Milkshape
  - more Unreal stuff to come soon



git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@356 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/NFFLoader.cpp

@@ -65,22 +65,16 @@ NFFImporter::~NFFImporter()
 
 // ------------------------------------------------------------------------------------------------
 // Returns whether the class can handle the format of the given file. 
-bool NFFImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler) const
+bool NFFImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
 {
-	// simple check of file extension is enough for the moment
-	std::string::size_type pos = pFile.find_last_of('.');
-	// no file extension - can't read
-	if( pos == std::string::npos)return false;
-	std::string extension = pFile.substr( pos);
+	return SimpleExtensionCheck(pFile,"nff","enff");
+}
 
-	// extensions: enff and nff
-	for( std::string::iterator it = extension.begin(); it != extension.end(); ++it)
-		*it = tolower( *it);
-
-	if( extension == ".nff" || extension == ".enff")
-		return true;
-
-	return false;
+// ------------------------------------------------------------------------------------------------
+// Get the list of all supported file extensions
+void NFFImporter::GetExtensionList(std::string& append)
+{
+	append.append("*.nff;*.enff");
 }
 
 // ------------------------------------------------------------------------------------------------
@@ -96,7 +90,7 @@ bool NFFImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler) const
 
 // ------------------------------------------------------------------------------------------------
 #define AI_NFF_PARSE_SHAPE_INFORMATION() \
-	aiVector3D center, radius(1.0f,std::numeric_limits<float>::quiet_NaN(),std::numeric_limits<float>::quiet_NaN()); \
+	aiVector3D center, radius(1.0f,get_qnan(),get_qnan()); \
 	AI_NFF_PARSE_TRIPLE(center); \
 	AI_NFF_PARSE_TRIPLE(radius); \
 	if (is_qnan(radius.z))radius.z = radius.x; \
@@ -282,7 +276,7 @@ void NFFImporter::InternReadFile( const std::string& pFile,
 	// check whether this is the NFF2 file format
 	if (TokenMatch(buffer,"nff",3))
 	{
-		const float qnan = std::numeric_limits<float>::quiet_NaN();
+		const float qnan = get_qnan();
 		const aiColor4D  cQNAN = aiColor4D (qnan,0.f,0.f,1.f);
 		const aiVector3D vQNAN = aiVector3D(qnan,0.f,0.f);