Camera Class Reference

The Camera class represents a perspective camera.

#include <camera.h>

List of all members.

Public Member Functions
void	init (const Box &b)
QMatrix4x4	modelviewMatrix () const
QMatrix4x4	projectionMatrix () const
Point	getObs () const
float	znear () const
float	zfar () const
void	setAspectRatio (float ar)
void	updateClippingPlanes (const Box &)
void	incrementDistance (float inc)
void	setDistance (float value)
void	incrementAngleX (float inc)
void	setAngleX (float value)
void	incrementAngleY (float inc)
void	setAngleY (float value)
void	setAngleZ (float value)
Vector	eulerAngles () const
void	pan (const Vector &offset)

---

Member Function Documentation

Vector Camera::eulerAngles

(

)

const

Returns v=(x,y,z) with the Euler angles of the camera. Rotation part of the viewing matrix is Rotz(-v.z)*Rotx(v.x)*Roty(-v.y)

Point Camera::getObs

(

)

const

Returns the camera (eye) position.

void Camera::incrementAngleX

(

float

inc

)

Rotates the camera by increasing the rotation angle around X axis (pitch).

void Camera::incrementAngleY

(

float

inc

)

Rotates the camera by increasing the rotation angle around Y axis (yaw).

void Camera::incrementDistance

(

float

inc

)

Moves the camera away (inc>0) or towards (inc<0) the current VRP.

void Camera::init

(

const Box &

b

)

Initializes the camera parameters from a bounding box of the scene. The camera is placed outside the box, ensuring that the whole box fits within the viewing frustum. Then sets the GL_MODELVIEW and GL_PROJECTION matrices.

QMatrix4x4 Camera::modelviewMatrix

(

)

const

Returns a 4x4 matrix representing the viewing transform of the camera.

void Camera::pan

(

const Vector &

offset

)

Offsets the camera position and VRP.

QMatrix4x4 Camera::projectionMatrix

(

)

const

Returns a 4x4 matrix representing the projection transform of the camera.

void Camera::setAngleX

(

float

value

)

Rotates the camera by setting the rotation angle around X axis (pitch).

void Camera::setAngleY

(

float

value

)

Rotates the camera by setting the rotation angle around Y axis (yaw).

void Camera::setAngleZ

(

float

value

)

Rotates the camera by setting the rotation angle around Z axis (roll).

void Camera::setAspectRatio

(

float

ar

)

Sets the camera aspect ratio.

void Camera::setDistance

(

float

value

)

Sets the distance to the current VRP.

void Camera::updateClippingPlanes

(

const Box &

box

)

Recomputes the near, far clipping planes according to the given bounding box.

float Camera::zfar

(

)

const

Returns zfar ( distance to the far clipping plane)

float Camera::znear

(

)

const

Returns znear ( distance to the near clipping plane)