Feature/thesis work merge (#566)

Web GUI from Klas Eskilson (three new modules: webgui, webbrowser and cefwebgui)
Parallel connection refactorization
Wormhole server added to the main repository
Transfer function editor work from Cristoffer Särevall
Update ghoul

modules/volume/transferfunctionproperty.cpp

@@ -0,0 +1,64 @@
+/*****************************************************************************************
+*                                                                                       *
+* OpenSpace                                                                             *
+*                                                                                       *
+* Copyright (c) 2014-2017                                                               *
+*                                                                                       *
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
+* software and associated documentation files (the "Software"), to deal in the Software *
+* without restriction, including without limitation the rights to use, copy, modify,    *
+* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
+* permit persons to whom the Software is furnished to do so, subject to the following   *
+* conditions:                                                                           *
+*                                                                                       *
+* The above copyright notice and this permission notice shall be included in all copies *
+* or substantial portions of the Software.                                              *
+*                                                                                       *
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
+* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
+* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
+* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
+* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
+****************************************************************************************/
+
+#include <modules/volume/transferfunctionproperty.h>
+
+#include <ghoul/lua/ghoul_lua.h>
+
+namespace openspace::properties {
+
+#define DEFAULT_FROM_LUA_LAMBDA(TYPE, DEFAULT_VALUE)                                     \
+    [](lua_State* state, bool& success) -> TYPE {                                        \
+        TYPE TF;                                                                         \
+        success = true;                                                                  \
+        TF.setEnvelopesFromLua(state);                                                   \
+        return TF;                                                                       \
+    }
+
+#define DEFAULT_TO_LUA_LAMBDA(TYPE)                                                      \
+    [](lua_State* state, TYPE value) -> bool {                                           \
+        bool success = value.getEnvelopesToLua(state);                                   \
+        return success;                                                                  \
+    }
+
+#define DEFAULT_FROM_STRING_LAMBDA(TYPE, DEFAULT_VALUE)                                  \
+    [](std::string val, bool& success) -> TYPE {                                         \
+        TYPE TF;                                                                         \
+        success = TF.setEnvelopesFromString(val);                                        \
+        return TF;                                                                       \
+    }
+
+#define DEFAULT_TO_STRING_LAMBDA(TYPE)                                                   \
+    [](std::string& outValue, TYPE inValue) -> bool {                                    \
+        outValue = inValue.getSerializedToString();                                      \
+        return true;                                                                     \
+    }
+
+    REGISTER_TEMPLATEPROPERTY_SOURCE(TransferFunctionProperty, volume::TransferFunction, 0,
+        DEFAULT_FROM_LUA_LAMBDA(volume::TransferFunction, volume::TransferFunction(0)),
+        DEFAULT_TO_LUA_LAMBDA(volume::TransferFunction),
+        DEFAULT_FROM_STRING_LAMBDA(volume::TransferFunction, volume::TransferFunction(0)),
+        DEFAULT_TO_STRING_LAMBDA(volume::TransferFunction),
+        LUA_TTABLE);
+} // namespace openspace::properties