sgltk::O_Camera Class Reference

Manages orthographic cameras. More...

#include <camera.h>

Inheritance diagram for sgltk::O_Camera:

Collaboration diagram for sgltk::O_Camera:

Public Member Functions
	O_Camera (const O_Camera &camera)
	O_Camera (glm::vec3 position, glm::vec3 direction, glm::vec3 up)
	O_Camera (glm::vec3 position, glm::vec3 direction, glm::vec3 up, float width, float height, float near_plane, float far_plane)
void	update_projection_matrix ()
	Recalculates the projection matrix.
std::vector< glm::vec3 >	calculate_frustum_points ()
	Calculates the corner points of the camera's frustum.
std::vector< float >	calculate_frustum_distance (glm::vec3 point)
	Calculates the distances of a point to all planes of the camera's frustum. Positive values indicate that the point and the frustum are on the opposite sides of the plane.
void	calculate_bounding_frustum (O_Camera &camera, glm::vec3 direction, float offset)
	Sets the camera parameters in such a way as to make the frustum of this camera the bounding box of the frustum of the other camera aligned to the direction vector.
void	calculate_bounding_frustum (P_Camera &camera, glm::vec3 direction, float offset)
	Sets the camera parameters in such a way as to make the frustum of this camera the bounding box of the frustum of the other camera aligned to the direction vector.
Public Member Functions inherited from sgltk::Camera
	Camera (glm::vec3 position, glm::vec3 direction, glm::vec3 up)
void	update_view_matrix ()
	Recalculates the view matrix.
void	move_up (float delta)
	Move the camera along the up vector.
void	move_right (float delta)
	Move the camera along the right vector.
void	move_forward (float delta)
	Move the camera along the forward vector.
void	move_by (float x, float y, float z)
	Move the camera by the vector (x, y, z)
void	move_by (glm::vec3 vector)
	Move the camera by the vector.
void	yaw (float angle)
	Rotate the camera using the up vector as the axis.
void	roll (float angle)
	Rotate the camera using the forward vector as the axis.
void	pitch (float angle)
	Rotate the camera using the right vector as the axis.

Additional Inherited Members
Public Attributes inherited from sgltk::Camera
glm::mat4	view_matrix
	The view matrix.
glm::mat4	projection_matrix
	The perspective projection matrix.
float	width
	Viewport width.
float	height
	Viewport height.
float	fovy
	The vertical field of view angle of the camera.
float	far_plane
	The far plane of the camera frustum.
float	near_plane
	The near plane of the camera frustum.
glm::vec3	position
	The camera position.
glm::vec3	direction
	The direction the camera is pointing.
glm::vec3	up
	The up vector of the camera.
glm::vec3	right
	The right vector of the camera.

Detailed Description

Manages orthographic cameras.

class O_Camera

Definition at line 200 of file camera.h.

Constructor & Destructor Documentation

O_Camera() [1/4]

O_Camera::O_Camera

(

)

Definition at line 5 of file camera_o.cpp.

O_Camera() [2/4]

O_Camera::O_Camera

(

const O_Camera &

camera

)

Parameters

camera

The camera to copy

Definition at line 12 of file camera_o.cpp.

O_Camera() [3/4]

O_Camera::O_Camera	(	glm::vec3	position,
		glm::vec3	direction,
		glm::vec3	up )

Parameters

position	The camera position
direction	The view direction
up	The up vector

Definition at line 22 of file camera_o.cpp.

O_Camera() [4/4]

O_Camera::O_Camera	(	glm::vec3	position,
		glm::vec3	direction,
		glm::vec3	up,
		float	width,
		float	height,
		float	near_plane,
		float	far_plane )

Parameters

position	The camera position
direction	The view direction
up	The up vector
width	The width of the viewport
height	The height of the viewport
near_plane	The near plane
far_plane	The far plane

Definition at line 30 of file camera_o.cpp.

~O_Camera()

O_Camera::~O_Camera

(

)

Definition at line 46 of file camera_o.cpp.

Member Function Documentation

calculate_bounding_frustum() [1/2]

void O_Camera::calculate_bounding_frustum	(	O_Camera &	camera,
		glm::vec3	direction,
		float	offset )

Sets the camera parameters in such a way as to make the frustum of this camera the bounding box of the frustum of the other camera aligned to the direction vector.

Parameters

camera	The camera to calculate the bounding box for
direction	The vector to align the bounding box to
offset	The offset by which the planes of the frustum will be moved

Definition at line 103 of file camera_o.cpp.

calculate_bounding_frustum() [2/2]

void O_Camera::calculate_bounding_frustum	(	P_Camera &	camera,
		glm::vec3	direction,
		float	offset )

Sets the camera parameters in such a way as to make the frustum of this camera the bounding box of the frustum of the other camera aligned to the direction vector.

Parameters

camera	The camera to calculate the bounding box for
direction	The vector to align the bounding box to
offset	The offset by which the planes of the frustum will be moved

Definition at line 142 of file camera_o.cpp.

calculate_frustum_distance()

std::vector< float > O_Camera::calculate_frustum_distance

(

glm::vec3

point

)

Calculates the distances of a point to all planes of the camera's frustum. Positive values indicate that the point and the frustum are on the opposite sides of the plane.

Parameters

point

The point to calculate the distances to.

Returns

Returns a vector containing the distances of the point to the planes of the frustum. 0 - far 1 - near 2 - left 3 - right 4 - top 5 - bottom

Definition at line 78 of file camera_o.cpp.

calculate_frustum_points()

std::vector< glm::vec3 > O_Camera::calculate_frustum_points

(

)

Calculates the corner points of the camera's frustum.

Returns

Returns a vector containing the world coordinates of the frustum points. 0 - near-bottom-left 1 - near-bottom-right 2 - near-top-right 3 - near-top-left 4 - far-bottom-left 5 - far-bottom-right 6 - far-top-right 7 - far-top-left

Definition at line 56 of file camera_o.cpp.

update_projection_matrix()

void O_Camera::update_projection_matrix ( )

virtual

Recalculates the projection matrix.

Implements sgltk::Camera.

Definition at line 49 of file camera_o.cpp.

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The documentation for this class was generated from the following files:

• /home/fstdb/proj/sgltk_example/sgltk/src/camera.h
• /home/fstdb/proj/sgltk_example/sgltk/src/camera_o.cpp