diff --git a/openVulkanoCpp/Base/Observable.hpp b/openVulkanoCpp/Base/Observable.hpp
index d364afc..7688066 100644
--- a/openVulkanoCpp/Base/Observable.hpp
+++ b/openVulkanoCpp/Base/Observable.hpp
@@ -4,6 +4,8 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
+#pragma once
+
 #include "Event.hpp"
 
 namespace OpenVulkano
diff --git a/openVulkanoCpp/Base/PauseCV.hpp b/openVulkanoCpp/Base/PauseCV.hpp
new file mode 100644
index 0000000..1d23247
--- /dev/null
+++ b/openVulkanoCpp/Base/PauseCV.hpp
@@ -0,0 +1,41 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <condition_variable>
+#include <mutex>
+
+namespace OpenVulkano
+{
+	class PauseCV final
+	{
+		std::mutex m_mutex;
+		std::condition_variable m_condVar;
+		bool m_paused = false;
+
+	public:
+		void Pause() { m_paused = true; }
+
+		void Resume()
+		{
+			{
+				std::unique_lock lock(m_mutex);
+				m_paused = false;
+			}
+			m_condVar.notify_all();
+		}
+
+		void Check()
+		{
+			while (m_paused)
+			{
+				std::unique_lock l(m_mutex);
+				m_condVar.wait(l, [this]{ return !m_paused; });
+			}
+		}
+	};
+}
diff --git a/openVulkanoCpp/Controller/MapCameraController.cpp b/openVulkanoCpp/Controller/MapCameraController.cpp
index 30e8211..37f9403 100644
--- a/openVulkanoCpp/Controller/MapCameraController.cpp
+++ b/openVulkanoCpp/Controller/MapCameraController.cpp
@@ -44,6 +44,13 @@ namespace OpenVulkano
 			CURRENT_FRAME.needsRedraw = true;
 		}
 	}
+	
+	void MapCameraController::SetSliceHeight(float height)
+	{
+		float diff = height - GetCamera()->GetPosition().y;
+		GetCamera()->SetMatrix(Math::Utils::translate(Math::Vector3f_SIMD{0,diff,0}) * GetCamera()->GetMatrix());
+		CURRENT_FRAME.needsRedraw = true;
+	}
 
 	void MapCameraController::SetDefaultKeybindings()
 	{
diff --git a/openVulkanoCpp/Controller/MapCameraController.hpp b/openVulkanoCpp/Controller/MapCameraController.hpp
index 24ff238..1e27f30 100644
--- a/openVulkanoCpp/Controller/MapCameraController.hpp
+++ b/openVulkanoCpp/Controller/MapCameraController.hpp
@@ -35,9 +35,11 @@ namespace OpenVulkano
 			m_dirUp = up;
 			m_dirSide = side;
 		}
+		
+		void SetSliceHeight(float height);
 
 		void Tick() override;
 
 		void SetDefaultKeybindings();
 	};
-}
\ No newline at end of file
+}
diff --git a/openVulkanoCpp/Data/Concurent/Containers/ThreadSafeMap.hpp b/openVulkanoCpp/Data/Concurent/Containers/ThreadSafeMap.hpp
index 27d9339..b32cf1d 100644
--- a/openVulkanoCpp/Data/Concurent/Containers/ThreadSafeMap.hpp
+++ b/openVulkanoCpp/Data/Concurent/Containers/ThreadSafeMap.hpp
@@ -10,6 +10,8 @@
 #include <optional>
 #include "Data/Concurent/MutexProtectedObject.hpp"
 
+#undef MAP_TYPE
+
 namespace OpenVulkano
 {
 	template<typename KEY, typename VALUE>
diff --git a/openVulkanoCpp/IO/FsUtils.cpp b/openVulkanoCpp/IO/FsUtils.cpp
index c2e84b2..3a3595a 100644
--- a/openVulkanoCpp/IO/FsUtils.cpp
+++ b/openVulkanoCpp/IO/FsUtils.cpp
@@ -69,4 +69,23 @@ namespace OpenVulkano
 		}
 		return true;
 	}
-}
\ No newline at end of file
+	
+	ByteSize FsUtils::GetDirSize(const std::filesystem::path& dir)
+	{
+		ByteSize size = 0;
+		
+		for (auto& p: fs::directory_iterator(dir))
+		{
+			if (fs::is_directory(p))
+			{
+				size += GetDirSize(p);
+			}
+			else
+			{
+				size += p.file_size();
+			}
+		}
+		
+		return size;
+	}
+}
diff --git a/openVulkanoCpp/IO/FsUtils.hpp b/openVulkanoCpp/IO/FsUtils.hpp
index 7b74b66..4dc397c 100644
--- a/openVulkanoCpp/IO/FsUtils.hpp
+++ b/openVulkanoCpp/IO/FsUtils.hpp
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include "Math/ByteSize.hpp"
 #include <filesystem>
 
 namespace OpenVulkano
@@ -17,5 +18,7 @@ namespace OpenVulkano
 		static bool DeleteEmptySubTrees(const std::filesystem::path& dir);
 
 		static bool IsTreeEmpty(const std::filesystem::path& dir);
+		
+		static ByteSize GetDirSize(const std::filesystem::path& dir);
 	};
-}
\ No newline at end of file
+}
diff --git a/openVulkanoCpp/Math/ByteSize.hpp b/openVulkanoCpp/Math/ByteSize.hpp
index 6cda7cc..9ba1e59 100644
--- a/openVulkanoCpp/Math/ByteSize.hpp
+++ b/openVulkanoCpp/Math/ByteSize.hpp
@@ -132,6 +132,17 @@ namespace OpenVulkano
 		constexpr operator uint64_t() const { return bytes; }
 
 		operator std::string() const { return Format(); }
+		
+		ByteSize operator +(const ByteSize other) const { return bytes + other.bytes; }
+		ByteSize operator -(const ByteSize other) const { return bytes + other.bytes; }
+		ByteSize operator +(const size_t other) const { return bytes + other; }
+		ByteSize operator -(const size_t other) const { return bytes + other; }
+		ByteSize& operator =(const size_t other) { bytes = other; return *this; }
+		ByteSize& operator =(const ByteSize other) { bytes = other.bytes; return *this; }
+		ByteSize& operator +=(const size_t other) { bytes += other; return *this; }
+		ByteSize& operator +=(const ByteSize other) { bytes += other.bytes; return *this; }
+		ByteSize& operator -=(const size_t other) { bytes -= other; return *this; }
+		ByteSize& operator -=(const ByteSize other) { bytes -= other.bytes; return *this; }
 	};
 
 	inline constexpr ByteSize operator"" _kiB(long double num) { return { num, ByteSizeUnit::kiB }; }
@@ -174,4 +185,4 @@ template<> struct fmt::formatter<OpenVulkano::ByteSize>
 		return fmt::format_to(ctx.out(), "{}", bs.Format());
 	}
 };
-#endif
\ No newline at end of file
+#endif
diff --git a/openVulkanoCpp/Math/CameraIntrinsic.hpp b/openVulkanoCpp/Math/CameraIntrinsic.hpp
index 2d62c20..ef914ee 100644
--- a/openVulkanoCpp/Math/CameraIntrinsic.hpp
+++ b/openVulkanoCpp/Math/CameraIntrinsic.hpp
@@ -80,12 +80,12 @@ namespace OpenVulkano::Math
 
 		[[nodiscard]] float GetFovX(float imageWidth) const
 		{
-			return 2 * atanf((Fx() / imageWidth) * 0.5f);
+			return 2 * atanf((imageWidth / Fx()) * 0.5f);
 		}
 
 		[[nodiscard]] float GetFovY(float imageHeight) const
 		{
-			return 2 * atanf((Fy() / imageHeight) * 0.5f);
+			return 2 * atanf((imageHeight / Fy()) * 0.5f);
 		}
 
 		[[nodiscard]] Math::Vector3f ProjectTo3D(Math::Vector2i pixelCoordinates, float depth) const
diff --git a/openVulkanoCpp/Shader/background.vert b/openVulkanoCpp/Shader/background.vert
index 5ccb9c3..b1cf56a 100644
--- a/openVulkanoCpp/Shader/background.vert
+++ b/openVulkanoCpp/Shader/background.vert
@@ -40,7 +40,7 @@ void main() {
 
     // Calculate the scaling factors for width and height
     float height = realCam.height;
-    float realScale = realCam.intrinsic[1][1] / height;
+    float realScale = height / realCam.intrinsic[1][1];
     float realAspect = height / realCam.width;
     float scaleY = realScale / cam.scaleFactor;
     float scaleX = scaleY / (cam.aspect * realAspect);