FIX: Change quaternion orientation for B3D loader (this format was forgotten with r502).

FIX: MS3D loader assigns group names to mesh nodes, possibly leading to two nodes with the same name if a group name is the name of a bone as well. This prevents animations from working properly.

These changes are merged with the 1.1 branch as well. 

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@705 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/B3DImporter.cpp

@@ -170,7 +170,8 @@ aiVector3D B3DImporter::ReadVec3(){
 
 // ------------------------------------------------------------------------------------------------
 aiQuaternion B3DImporter::ReadQuat(){
-	float w=ReadFloat();
+	// (aramis_acg) Fix to adapt the loader to changed quat orientation
+	float w=-ReadFloat();
 	float x=ReadFloat();
 	float y=ReadFloat();
 	float z=ReadFloat();

code/MS3DLoader.cpp

@@ -552,7 +552,12 @@ void MS3DImporter::InternReadFile( const std::string& pFile,
 		aiNode* nd = rt->mChildren[i] = new aiNode();
 
 		const TempGroup& g = groups[i];
-		nd->mName = aiString(g.name);
+
+		// we need to generate an unique name for all mesh nodes.
+		// since we want to keep the group name, a prefix is
+		// prepended.
+		nd->mName = aiString("<MS3DMesh>_");
+		nd->mName.Append(g.name);
 		nd->mParent = rt;
 
 		nd->mMeshes = new unsigned int[nd->mNumMeshes = 1];