Merge pull request #978 from overte-org/fix/gltf_locale

Fixed locale problems with cgltf.h

libraries/model-serializers/src/GLTFSerializer.h

@@ -14,13 +14,29 @@
 #ifndef hifi_GLTFSerializer_h
 #define hifi_GLTFSerializer_h
 
-#include "cgltf.h"
+#include <sstream>
 
 #include <memory.h>
 #include <QtNetwork/QNetworkReply>
 #include <hfm/ModelFormatLogging.h>
 #include <hfm/HFMSerializer.h>
 
+static float atof_locale_independent(char *str) {
+    //TODO: Once we have C++17 we can use std::from_chars
+    std::istringstream streamToParse(str);
+    streamToParse.imbue(std::locale("C"));
+    float value;
+    if(!(streamToParse >> value)) {
+        qDebug(modelformat) << "cgltf: Cannot parse float from string: " << str;
+        return 0.0f;
+    }
+    return value;
+}
+
+#define CGLTF_ATOF(str) atof_locale_independent(str)
+
+#include "cgltf.h"
+
 
 class GLTFSerializer : public QObject, public HFMSerializer {
     Q_OBJECT