Graphics: Add Camera class

include/Nazara/Graphics/Camera.hpp

@@ -0,0 +1,76 @@
+// Copyright (C) 2021 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Graphics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_CAMERA_HPP
+#define NAZARA_CAMERA_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Graphics/AbstractViewer.hpp>
+#include <Nazara/Graphics/Enums.hpp>
+#include <Nazara/Graphics/ViewerInstance.hpp>
+#include <Nazara/Math/Rect.hpp>
+#include <Nazara/Math/Vector2.hpp>
+#include <Nazara/Renderer/RenderTarget.hpp>
+#include <memory>
+#include <vector>
+
+namespace Nz
+{
+	class NAZARA_GRAPHICS_API Camera : public AbstractViewer
+	{
+		public:
+			inline Camera(const RenderTarget* renderTarget, ProjectionType projectionType = ProjectionType::Perspective);
+			inline Camera(const Camera& camera);
+			inline Camera(Camera&& camera) noexcept;
+			~Camera() = default;
+
+			inline float GetAspectRatio() const;
+			inline DegreeAnglef GetFOV() const;
+			const RenderTarget& GetRenderTarget() override;
+			inline const Vector2f& GetSize() const;
+			inline const Rectf& GetTargetRegion() const;
+			ViewerInstance& GetViewerInstance() override;
+			const ViewerInstance& GetViewerInstance() const override;
+			const Recti& GetViewport() const override;
+			inline float GetZFar() const;
+			inline float GetZNear() const;
+
+			inline void UpdateFOV(DegreeAnglef fov);
+			inline void UpdateProjectionType(ProjectionType projectionType);
+			inline void UpdateSize(const Vector2f& size);
+			void UpdateTarget(const RenderTarget* framebuffer);
+			inline void UpdateTargetRegion(const Rectf& targetRegion);
+			inline void UpdateViewport(const Recti& viewport);
+			inline void UpdateZFar(float zFar);
+			inline void UpdateZNear(float zNear);
+
+			inline Camera& operator=(const Camera& camera);
+			inline Camera& operator=(Camera&& camera) noexcept;
+
+		private:
+			inline void UpdateProjectionMatrix();
+			inline void UpdateViewport();
+			inline void UpdateViewport(Vector2ui renderTargetSize);
+
+			NazaraSlot(RenderTarget, OnRenderTargetRelease, m_onRenderTargetRelease);
+			NazaraSlot(RenderTarget, OnRenderTargetSizeChange, m_onRenderTargetSizeChange);
+
+			const RenderTarget* m_renderTarget;
+			DegreeAnglef m_fov;
+			ProjectionType m_projectionType;
+			Rectf m_targetRegion;
+			Recti m_viewport;
+			Vector2f m_size;
+			ViewerInstance m_viewerInstance;
+			float m_aspectRatio;
+			float m_zFar;
+			float m_zNear;
+	};
+}
+
+#include <Nazara/Graphics/Camera.inl>
+
+#endif