CameraObject Class Reference

Extends the functionality of a MovingObject to the ones of a camera, usable in games. More...

#include <CameraObject.h>

Inheritance diagram for CameraObject:

Public Member Functions
	CameraObject (void)
	Initializes the camera residing in the center of the scene.
	CameraObject (Vector3 position)
	Initializes the eye with a given position but standard view direction.
	CameraObject (float x, float y, float z)
	Initializes the eye with a given position but standard view direction.
	~CameraObject (void)
	Destructor.
bool	isRearView (void)
	Checks, if rear view is enabled.
void	look (void)
	Moves the camera to the position defined by eye and adjusts it to view to the correct position.
void	toggleRearView (void)
	Switches to rear view and back to normal view.
void	moveDown (float t)
	Moves the camera position downwards.
void	moveLeft (float t)
	Moves the camera position to the left.
void	moveRight (float t)
	Moves the camera position to the right.
void	moveUp (float t)
	Moves the camera position upwards.
void	setMoveSpeed (float t)
	Sets the speed for camera movement. speed the speed.
Public Member Functions inherited from MovingObject
	MovingObject ()
	Constructor, initializes to the origin. The line of vision is aligned to the z axis, the up vector is aligned to the y-axis.
	MovingObject (Vector3 position)
	Constructor initializing to a given position as Vector3.
	MovingObject (float x, float y, float z)
	Constructor, the startposition is (x,y,z).
	~MovingObject (void)
	Destructor.
void	pitch (float angle)
	Pitches the line of vision.
void	roll (float angle)
	Rolls the eye.
Vector3	getRight (void)
	Returns the vector indiciating what is 'right' of the eye.
Vector3	getUp (void)
	Returns the vector indication what is 'up'.
Vector3	getView (void)
	Returns the current viewing vector.
void	setView (Vector3 v)
	Sets the current viewing vector.
void	accelerate (float step)
	Sets the speed.
void	advance (float t)
	Move the camera depending on the current speed and line of vision.
float	getMaxSpeed (void)
	Returns the maximal speed.
float	getMinSpeed (void)
	Returns the minimal speed.
float	getSpeed (void)
	Returns the vector indicating the direction 'right'.
void	setMaxSpeed (float speed)
	Sets the maximal speed.
void	setMinSpeed (float speed)
	Sets the minimal speed.
void	setSpeed (float speed)
	Sets the current speed.
void	setStep (float step)
	Sets the value that is advanced in one step.
Public Member Functions inherited from GameObject
	GameObject (void)
	The constructor creates the object. The position is set to zero by default.
	GameObject (Vector3 position)
	The constructor creates the object and gives it a position in the scene.
	GameObject (float x, float y, float z)
	The constructor creates the object and gives it a position in the scene.
	~GameObject (void)
	Destructor. Does nothing.
virtual Vector3	getPos (void)
	Returns the current position as Vector3 triple.
void	setPos (float x, float y, float z)
	Sets the current position.
void	setPos (Vector3 position)
	Sets the current position.

Detailed Description

Extends the functionality of a MovingObject to the ones of a camera, usable in games.

It therefore adds a new type of moving: strafing. The camera allows to set up an projection using GLU functions, it also has the ability to change the direction of view dynamically, such as to look backwards. But it does not change anything in the actual displaying of the program, so if view frustum culling or something equivalent is used, the displayed items have to changed outside this class.

Definition at line 19 of file CameraObject.h.

Constructor & Destructor Documentation

CameraObject::CameraObject

(

void

)

Initializes the camera residing in the center of the scene.

Start coordinates are (0,0,0) for the eye with view vector (0,0,1) and direction (0,1,0) for up. This equals a position in the center viewing along z-axis with y-axis pointing upwards.

Definition at line 15 of file CameraObject.cpp.

CameraObject::CameraObject

(

Vector3

position

)

Initializes the eye with a given position but standard view direction.

Start coordinate for the eye is given by position. The view vector is set to (0,0,1) and direction (0,1,0) is set for up. This equals a position in the center viewing along z-axis with y-axis pointing upwards.

Parameters

position

the initial position of the eye

Definition at line 27 of file CameraObject.cpp.

CameraObject::CameraObject	(	float	x,
		float	y,
		float	z
	)

Initializes the eye with a given position but standard view direction.

Start coordinate for the eye is given by coordinates in 3d space. The view vector is set to (0,0,1) and direction (0,1,0) is set for up. This equals a position in the center viewing along z-axis with y-axis pointing upwards.

Parameters

x	x-coordinate for the eye
y	y-coordinate for the eye
z	z-coordinate for the eye

Definition at line 41 of file CameraObject.cpp.

CameraObject::~CameraObject

(

void

)

Destructor.

Definition at line 49 of file CameraObject.cpp.

Member Function Documentation

bool CameraObject::isRearView

(

void

)

Checks, if rear view is enabled.

Definition at line 56 of file CameraObject.cpp.

void CameraObject::look

(

void

)

Moves the camera to the position defined by eye and adjusts it to view to the correct position.

Definition at line 65 of file CameraObject.cpp.

void CameraObject::moveDown

(

float

t

)

Moves the camera position downwards.

The factor specifies how much the camera is moved and is multiplicted with the current movement speed. In a dynamic situation it can be used to reflect passed time since the last update occured.

Parameters

t	a factor for the distance

Definition at line 85 of file CameraObject.cpp.

void CameraObject::moveLeft

(

float

t

)

Moves the camera position to the left.

The factor specifies how much the camera is moved and is multiplicted with the current movement speed. In a dynamic situation it can be used to reflect passed time since the last update occured.

Parameters

t	a factor for the distance

Definition at line 95 of file CameraObject.cpp.

void CameraObject::moveRight

(

float

t

)

Moves the camera position to the right.

The factor specifies how much the camera is moved and is multiplicted with the current movement speed. In a dynamic situation it can be used to reflect passed time since the last update occured.

Parameters

t	a factor for the distance

Definition at line 105 of file CameraObject.cpp.

void CameraObject::moveUp

(

float

t

)

Moves the camera position upwards.

The factor specifies how much the camera is moved and is multiplicted with the current movement speed. In a dynamic situation it can be used to reflect passed time since the last update occured.

Parameters

t	a factor for the distance

Definition at line 115 of file CameraObject.cpp.

void CameraObject::setMoveSpeed

(

float

t

)

Sets the speed for camera movement. speed the speed.

Definition at line 123 of file CameraObject.cpp.

void CameraObject::toggleRearView

(

void

)

Switches to rear view and back to normal view.

Definition at line 75 of file CameraObject.cpp.

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

• mElite/CameraObject.h
• mElite/CameraObject.cpp