Further work on the IRR, AC, LWS loaders. Further work on the - still unfinished - OptimizeGraph step. SceneCombiner works now properly in all cases I tested yet.

Added missing 'typename' in Colladaparser.h
First implementation of spherical and cylindrical mapping, already in use for IRR and LWO models. For the latter the coordinate system is not yet correct.
Moved vec2d to a separate header and added operators similar to vec3.
Added plane and ray helper classes. Just the data is wrapped, no operators required for the moment.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@249 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/DefaultIOSystem.cpp

@@ -48,6 +48,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 using namespace Assimp;
 
+
 // ------------------------------------------------------------------------------------------------
 // Constructor. 
 DefaultIOSystem::DefaultIOSystem()
@@ -103,3 +104,42 @@ std::string DefaultIOSystem::getOsSeparator() const
 #endif
 	return sep;
 }
+
+// ------------------------------------------------------------------------------------------------
+// IOSystem default implementation (ComparePaths isn't a pure virtual function)
+bool IOSystem::ComparePaths (const std::string& one, 
+	const std::string& second)
+{
+	return !ASSIMP_stricmp(one,second);
+}
+
+// this should be sufficient for all platforms :D
+#define PATHLIMIT 1024
+
+// ------------------------------------------------------------------------------------------------
+// Convert a relative path into an absolute path
+inline void MakeAbsolutePath (const std::string& in, char* _out)
+{
+	::_fullpath(_out, in.c_str(),PATHLIMIT);
+}
+
+// ------------------------------------------------------------------------------------------------
+// DefaultIOSystem's more specialized implementation
+bool DefaultIOSystem::ComparePaths (const std::string& one, 
+	const std::string& second)
+{
+	// chances are quite good both paths are formatted identically,
+	// so we can hopefully return here already
+	if( !ASSIMP_stricmp(one,second) )
+		return true;
+
+	char temp1[PATHLIMIT];
+	char temp2[PATHLIMIT];
+	
+	MakeAbsolutePath (one, temp1);
+	MakeAbsolutePath (second, temp2);
+
+	return !ASSIMP_stricmp(temp1,temp2);
+}
+
+#undef PATHLIMIT