A class for an arc-ball camera. More...

#include <Camera.h>

Public Member Functions
	Camera (float fov, float aspect, float near, float far)

glm::mat4	getInverseProjectionViewMatrix ()

glm::mat4	getProjectionViewMatrix ()

glm::mat4	getViewMatrix ()

glm::vec3	getPosition ()

glm::vec3	getDirection ()

void	update (int x, int y, float zoom, bool dragging, bool strafing)

Detailed Description

A class for an arc-ball camera.

This class defines a camera and calculates the needed transformations, projections and vectors derived from the camera. The camera is an arc ball camera.

Constructor & Destructor Documentation

◆ Camera()

Camera::Camera	(	float	fov,
		float	aspect,
		float	near,
		float	far
	)

Creates a camera with given parameter, which define the projection matrix.

Parameters

fov	Field of view of projection in degrees.
aspect	Aspect ratio of projection.
near	Near plane z.
far	Far plane z.

Member Function Documentation

◆ getDirection()

glm::vec3 Camera::getDirection ( )

Return the normalized view axis direction.

Returns: glm::vec3 Normalized view direction. Has length 1.

◆ getInverseProjectionViewMatrix()

glm::mat4 Camera::getInverseProjectionViewMatrix ( )

Gets the inverse of the projection view matrix. Transforms from screen space to world space.

Returns: glm::mat4 inverse of the projection view matrix

◆ getPosition()

glm::vec3 Camera::getPosition ( )

Gets the position of the camera.

Returns: glm::vec3 Pposition of camera.

◆ getProjectionViewMatrix()

mat4 Camera::getProjectionViewMatrix ( )

Gets the the projection view matrix. Transforms from world space to screen space.

Returns: glm::mat4 the projection view matrix

◆ getViewMatrix()

glm::mat4 Camera::getViewMatrix ( )

Gets the the view matrix. Transforms from world space to camera space.

Returns: glm::mat4 the view matrix

◆ update()

void Camera::update	(	int	x,
		int	y,
		float	zoom,
		bool	dragging,
		bool	strafing
	)

Updates the camera position and direction. Has to be updated often as relative movement is used, therefor if the camera wasn't updated for some time the position and direction can jump by a lot.