added cameras

backend/include/backend/Camera.hpp

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <memory>
+#include "Transformable.hpp"
+#include "Drawable.hpp"
+
+// TODO: Find better name
+class CameraBase : public Transformable
+{
+public:
+	// "Scaling" doesn't really makes sense for a camera
+	void GetScale() = delete;
+	void SetScale(const glm::vec3&) = delete;
+	void Scale(const glm::vec3&) = delete;
+
+	inline const glm::mat4& GetView() const
+	{
+		return transformation;
+	}
+
+	inline const glm::mat4& GetProjection() const
+	{
+		return projection;
+	}
+
+	inline void Draw(const Drawable& drawable) const
+	{
+		drawable.Draw(*this);
+	}
+
+protected:
+	glm::mat4 projection;
+};
+
+
+class Camera : public CameraBase
+{
+public:
+	Camera(float fov = 90.0f, float aspect = 1.0f, float zNear = 0.01f, float zFar = 100.0f)
+	{
+		projection = glm::perspective(glm::radians(fov), aspect, zNear, zFar);
+	}
+};
+
+class OrthogonalCamera : public CameraBase
+{
+public:
+	OrthogonalCamera(float left = -1.0f, float right = 1.0f, float bottom = -1.0f, float top = 1.0f, float zNear = -100.0f, float zFar = 100.0f)
+	{
+		projection = glm::ortho(left, right, bottom, top, zNear, zFar);
+	}
+};

backend/include/backend/Drawable.hpp

@@ -4,6 +4,8 @@
 #include "VertexArrayObject.hpp"
 #include "Shader.hpp"
 
+class CameraBase;
+
 enum class PrimitiveType
 {
 	Lines = GL_LINES,
@@ -21,8 +23,8 @@ public:
 	Drawable(const Drawable& other) = delete;
 	void operator=(const Drawable& other) = delete;
 
-	virtual void InitializeShader() = 0;
-	void Render();
+	virtual void InitializeShader(const CameraBase& camera) const = 0;
+	void Draw(const CameraBase& camera) const;
 	void SetPrimitiveType(PrimitiveType type);
 
 protected: