Cleaning up window delegate

include/openspace/engine/windowdelegate.h

@@ -40,8 +40,6 @@ struct WindowDelegate {
 
     void (*setSynchronization)(bool enabled) = [](bool) {};
 
-    void (*clearAllWindows)(const glm::vec4& clearColor) = [](const glm::vec4&) {};
-
     bool (*windowHasResized)() = []() { return false; };
 
     double (*averageDeltaTime)() = []() { return 0.0; };
@@ -56,47 +54,29 @@ struct WindowDelegate {
 
     double (*applicationTime)() = []() { return 0.0; };
 
-    glm::vec2 (*mousePosition)() = []() { return glm::vec2(0.f); };
-
-    uint32_t (*mouseButtons)(int maxNumber) = [](int) { return uint32_t(0); };
-
     glm::ivec2 (*currentWindowSize)() = []() { return glm::ivec2(0); };
 
     glm::ivec2 (*currentSubwindowSize)() = []() { return glm::ivec2(0); };
 
-    glm::ivec2 (*currentWindowResolution)() = []() { return glm::ivec2(0); };
-
     glm::ivec2 (*currentDrawBufferResolution)() = []() { return glm::ivec2(0); };
 
     glm::ivec2 (*currentViewportSize)() = []() { return glm::ivec2(0); };
 
     glm::vec2 (*dpiScaling)() = []() { return glm::vec2(1.f); };
 
-    int (*currentNumberOfAaSamples)() = []() { return 1; };
-
     bool (*hasGuiWindow)() = []() { return false; };
 
     bool (*isGuiWindow)() = []() { return false; };
 
-    bool (*isMaster)() = []() { return false; };
-
-    int (*clusterId)() = []() { return 0; };
-
-    bool (*isUsingSwapGroups)() = []() { return false; };
-
-    bool (*isSwapGroupMaster)() = []() { return false; };
-
-    glm::mat4 (*viewProjectionMatrix)() = []() { return glm::mat4(1.f); };
+    bool (*isMaster)() = []() { return true; };
 
     glm::mat4 (*modelMatrix)() = []() { return glm::mat4(1.f); };
 
     void (*setNearFarClippingPlane)(float near, float far) = [](float, float) {};
 
-    void (*setEyeSeparationDistance)(float distance) = [](float) {};
-
     bool (*isFisheyeRendering)() = []() { return false; };
 
-    unsigned int(*takeScreenshot)(bool applyWarping) = [](bool) { return 0u; };
+    unsigned int (*takeScreenshot)(bool applyWarping) = [](bool) { return 0u; };
 
     void (*swapBuffer)() = []() {};