fixes #2200

* tabs and spaces can be used to seperate objects
* emptylines dont cause warnigns anymore

src/ACGL/OpenGL/Data/GeometryDataLoadStoreOBJ.cc

@@ -65,20 +65,35 @@ namespace
         return r;
     }
 
+    void trim(const char*& _position)
+    {
+        while(*_position == ' ' || *_position == '\t')
+            _position ++;
+    }
+
+    const char * nextObject(const char* _position, const char* _end)
+    {
+        return std::find_if(_position,
+                            _end,
+                            [](char _value)
+        {
+            return (_value == ' ' || _value == '\t');
+        }
+        );
+
+    }
+
     // Parses a string of space-separated numbers into a packed floating-point vector (_data) with a maximum number of _maxDimension elements
     void parseVector(const char* _start , const char* _end, int _maxDimension, int& _dimension, float* _data)
     {
         const char* it = _start;
-        if (*it == ' ')
-        {
-            it++;
-        }
         const char* end = _end;
         const char* found;
         _dimension = 0;
         while (_dimension < _maxDimension && it < end)
         {
-            found = std::find(it, end, ' ');
+            trim(it);
+            found = nextObject(it,end);
             _data[_dimension++] = fastAtof(it,found-1);
             it = found == end ? end : found + 1;
         }
@@ -92,8 +107,7 @@ namespace
         indices.reserve(5);
 
         const char* it = _start;
-        if (*it == ' ') //skip starting whitespace
-            it++;
+        trim(it);
         const char* vsit;
         const char* vsend;
         const char* foundSlash;
@@ -102,12 +116,13 @@ namespace
         while (it < _end)
         {
             vsit = it;
-            vsend = std::find(it, _end, ' ');
+            vsend = nextObject(it, _end);
             componentIndex = 0;
             IndexTuple indexTuple;
             //process the string now meaning we split by /
             while (vsit < vsend)
             {
+                trim(vsit);
                 foundSlash = std::find(vsit, vsend, '/');
                 index = std::atoi(vsit);
                 if (componentIndex == 0) indexTuple.position = index - 1;
@@ -117,7 +132,8 @@ namespace
                 vsit = foundSlash == vsend ? vsend : foundSlash + 1;
             }
             indices.push_back(indexTuple);
-            it = vsend == _end ? _end : vsend + 1;
+            trim(vsend);
+            it = vsend;
         }
         return indices;
     }
@@ -160,21 +176,23 @@ SharedGeometryData loadGeometryDataFromOBJ(const std::string& _filename, bool _c
     const char* parameters[2];
     while (pchBuf < pchEnd)
     {
+        trim(pchBuf);
         // Parse the current line
         const char* pchEOL = std::find(pchBuf, pchEnd, '\n');
 
-        // If the line starts with a #, it is a comment
-        if (*pchBuf == '#')
+        // skip empty lines or lines starting with #
+        if (*pchBuf == '#' || pchBuf == pchEOL)
         {
             pchBuf = pchEOL + 1;
             continue;
         }
 
         // Otherwise, extract the first word and the remainder
-        const char* pchKey = std::find(pchBuf, pchEnd, ' ');
+        const char* pchKey = nextObject(pchBuf, pchEnd);
         keyword = pchBuf;
-        keywordLength = pchKey - pchBuf;//std::string(pchBuf, pchKey);
-        parameters[0] = pchKey + 1;
+        keywordLength = pchKey - pchBuf;
+        trim(pchKey);
+        parameters[0] = pchKey;
         parameters[1] = pchEOL;
 
         if(strncmp(keyword,"v",keywordLength) == 0) // vertex position