[EDIT] comments on each function

src/entities/Camera.h

@@ -12,6 +12,7 @@ namespace entities
 	class Camera
 	{
 	private:
+		// The movement speed of the camera
 		const float SPEED = 0.52f;
 		
 		glm::vec3 position;
@@ -20,6 +21,11 @@ namespace entities
 	public:
 		Camera(const ::glm::vec3& position, const ::glm::vec3& rotation);
 
+		/*
+		 * @brief: This funtion moves the camera's position from the inputs of the keyboard
+		 *
+		 * @param window: The OpenGL window
+		 */
 		void Move(GLFWwindow* window);
 		
 		inline glm::vec3 GetPosition() const{ return position; }

src/entities/Entity.h

@@ -20,7 +20,18 @@ namespace entities
 	public:
 		Entity(const models::TexturedModel& model, const glm::vec3& position, const glm::vec3& rotation, float scale);
 
+		/*
+		 * @brief: This function increases the position of the entity
+		 *
+		 * @param distance: The amount of distance in each axis the entity needs to move
+		 */
 		void IncreasePosition(const glm::vec3& distance);
+
+		/*
+		 * @brief: This function increases the rotation of the entity
+		 *
+		 * @param rotation: The angle of each axis the entity needs to rotate
+		 */
 		void IncreaseRotation(const glm::vec3& rotation);
 		
 		inline models::TexturedModel GetModel() const{return model;}

src/models/Model.h

@@ -5,11 +5,11 @@
 namespace models
 {
 	/*
-		Structure for storing a vboID and vertex_count.
+		Structure for storing a vboID and vertex_count (this representa a mesh without a model).
 
-		This structure represents a Bare bones Model (A mesh without a texture).
-		The vao_id, points to an ID stored by openGL and the
-		vertex_count is how many triangles in the mesh there are.
+		vao_id = The openGL id of the model
+		vertex_count = The amount of vertices in the model
+		model_size = The size on each axis of the model
 	*/
 	struct RawModel
 	{
@@ -21,6 +21,7 @@ namespace models
 	/*
 		Structure for storing a texture (texture_id) to apply to a RawModel.
 
+		texture_id = The openGL id of the textures
 		shine_damper = A damper for the angle the model needs to be look at to see reflections
 		reflectivity = The amount of light the model reflects
 	*/

src/renderEngine/Loader.h

@@ -9,17 +9,24 @@ namespace render_engine
 	namespace loader
 	{
 		/*
-			This function generates a model from model data.
+			@brief: This function generates a model from model data.
+
+			@param position: The positions of each vertex (in order: x, y, z) in the model
+			@param texture_coords: The texture coordinates of the model
+			@param normals: The normals of each face of the model
+			@param indices: A list with a sort of lookup table to the positions parameter
 		*/
 		models::RawModel LoadToVAO(std::vector<float>& positions, std::vector<float>& texture_coords, std::vector<float>& normals, std::vector<unsigned int>& indices);
 
 		/*
-			Loads a texture from a file into openGL using stb_image.h
+			@brief: Loads a texture from a file into openGL using stb_image.h
+
+			@param file_name: The filepath to the texture
 		 */
 		GLuint LoadTexture(std::string file_name);
 		
 		/*
-			Call this function when cleaning up all the meshes (when exiting the program).
+			@brief: Call this function when cleaning up all the meshes (when exiting the program).
 		*/
 		void CleanUp();
 	}

src/renderEngine/Renderer.h

@@ -10,17 +10,23 @@ namespace render_engine
 		const glm::vec3 SKY_COLOR = { 0.3f, 0.4f, 0.6f };
 		
 		/*
-			Call this function when starting the program
+			@brief: Call this function when starting the program
+
+			@param shader: The shader to render the entities with
 		 */
 		void Init(shaders::EntityShader& shader);
 		
 		/*
-			Call this function before rendering. 
+			@brief: Call this function before rendering.
+					This function will enable culling and load the projectionMatrix into the shader.
 		*/
 		void Prepare();
 
 		/*
-			Call this function when wanting to Render a mesh to the screen.
+			@brief: Call this function when wanting to Render a mesh to the screen.
+
+			@param entity: The entity which needs to be rendered
+			@param shader: The shader the entity needs to be rendered with
 		*/
 		void Render(entities::Entity& entity, shaders::EntityShader& shader);
 	}

src/renderEngine/obj_loader.h

@@ -6,7 +6,9 @@
 namespace render_engine
 {
 	/*
-	 * This function retrieves an .obj file, loads it into the VBO and returns a RawModel
+	 * @brief: This function retrieves an .obj file, loads it into the VBO and returns a RawModel
+	 *
+	 * @param file_name: The path to the .obj file
 	 */
 	models::RawModel LoadObjModel(std::string file_name);
 }

src/shaders/entity_shader.h

@@ -26,13 +26,47 @@ namespace shaders
 	public:
 		EntityShader();
 
+		/*
+		 * @brief: A method to load the model matrix into the shader
+		 *
+		 * @param matrix: The model matrix
+		 */
 		void LoadModelMatrix(const glm::mat4& matrix) const;
+
+		/*
+		 * @brief: A method to load the projection matrix into the shader
+		 *
+		 * @param projection: The projection matrix
+		 */
 		void LoadProjectionMatrix(const glm::mat4& projection) const;
+
+		/*
+		 * @brief: A method to load the view matrix (camera) into the shader
+		 *
+		 * @param camera: The camera which the scene needs to be rendered from
+		 */
 		void LoadViewMatrix(entities::Camera& camera) const;
 
+		/*
+		 * @brief: A method to load a light into the shader
+		 *
+		 * @param light: The light
+		 */
 		void LoadLight(entities::Light& light) const;
+
+		/*
+		 * @brief: A method to load the the shine variables from a model into the shader
+		 *
+		 * @param shine_damper: The dampening of the angle from when to render reflectivity on the vertex
+		 * @param reflectivity: The amount the model reflects
+		 */
 		void LoadShineVariables(float shine_damper, float reflectivity) const;
 
+		/*
+		 * @brief: A method to load the sky color into the shader. This color will be used for the fog
+		 *
+		 * @param sky_color: The color of the sky
+		 */
 		void LoadSkyColor(glm::vec3 sky_color) const;
 			
 	protected:

src/shaders/shader_program.h

@@ -21,29 +21,87 @@ namespace shaders
 		ShaderProgram(std::string& vertex_shader, std::string& fragment_shader);
 		virtual ~ShaderProgram() = default;
 
-		// Call this function after making the shaderprogram (sets all the attributes of the shader)
+		/*
+		 * @brief: Call this function after making the shaderprogram (sets all the attributes of the shader)
+		 */
 		void Init();
-		// Call this function before rendering
+
+		/*
+		 * @brief: Call this function before rendering
+		 */
 		void Start() const;
-		// Call this function after rendering
+
+		/*
+		 * @brief: Call this function after rendering
+		 */
 		void Stop() const;
-		// Call this function when closing the application
+		
+		/*
+		 * @brief: Call this function when closing the application
+		 */
 		void CleanUp() const;
 
 	protected:
-		// Set the inputs of the vertex shader
+		/*
+		 * @brief: Set the inputs of the vertex shader
+		 */
 		virtual void SetAttributes() const = 0;
+
+		/*
+		 * @brief: Sets/binds a input variable (in) to a VBO from the model
+		 *
+		 * @param attribute: The id of the VBO
+		 * @param variable_name: The name of the "in" variable in the shader
+		 */
 		void SetAttribute(const GLuint attribute, const char* variable_name) const;
 
-		// Loads value's (uniform variables) into the shader
+		/*
+		 * @brief: This function loads a float value into a uniform variable into the shader
+		 *
+		 * @param location: The location of the variable in openGL
+		 * @param value: The value which will be loaded into the variable
+		 */
 		void LoadFloat(GLuint location, GLfloat value) const;
+
+		/*
+		 * @brief: This function loads a vector value into a uniform variable into the shader
+		 *
+		 * @param location: The location of the variable in openGL
+		 * @param vector: The value which will be loaded into the variable
+		 */
 		void LoadVector(GLuint location, glm::vec3 vector) const;
+
+		/*
+		 * @brief: This function loads a 4x4 matrix value into a uniform variable into the shader
+		 *
+		 * @param location: The location of the variable in openGL
+		 * @param matrix: The value which will be loaded into the variable
+		 */
 		void LoadMatrix(GLuint location, glm::mat4 matrix) const;
-		
+
+		/*
+		 * @brief: This function will get all the locations of each uniform variable
+		 */
 		virtual void GetAllUniformLocations() = 0;
+
+		/*
+		 * @brief: This function will retrieve the location of a uniform variable
+		 *
+		 * @param uniform_name: The name of the uniform variable
+		 *
+		 * @return: The location of the uniform variable
+		 */
 		GLuint GetUniformLocation(const GLchar* uniform_name) const;
 	
 	private:
+		/*
+		 * @brief: This function will load a shader into openGL
+		 *
+		 * @param shader_string: The shader as a string (the whole code)
+		 * @param type: The type of the shader (Vertex/Fragment)
+		 *
+		 * @return: The id of the shader given by openGL
+		 */
 		GLuint LoadShader(const std::string& shader_string, GLuint type) const;
 	};
 }

src/toolbox/toolbox.h

@@ -7,8 +7,24 @@ namespace toolbox
 {
 	#define WINDOW_WIDTH 1400.0f
 	#define WINDOW_HEIGT 800.0f
-	
+
+	/*
+	 * @brief: This function will create a model matrix
+	 *
+	 * @param translation: The position of the model
+	 * @param rotation: The rotation of the model
+	 * @param scale: The scale of the model
+	 *
+	 * @return: The model matrix of the model
+	 */
 	glm::mat4 CreateModelMatrix(glm::vec3 translation, glm::vec3 rotation, float scale);
 
+	/*
+	 * @brief: This function will create a view matrix from the camera's position
+	 *
+	 * @param camera: The camera the view matrix needs to be made from
+	 *
+	 * @return: The view matrix
+	 */
 	glm::mat4 CreateViewMatrix(entities::Camera& camera);
 }