com.ericsson.tic.vi
Class Camera

java.lang.Object
  com.ericsson.tic.vi.Camera

public class Camera
extends Object

Keeps track of all common camera related variables.

Version:

1.0 (2008-12-04)

Author:

Sami Matilainen

Field Summary

float	camX Camera coordinate.
float	camY Camera coordinate.
float	camZ Camera coordinate.
boolean	dragging A flag used to determine wheter the mouse is dragging or not.
private int	id The view id for this camera.
float	lookX Camera look at coordinate.
float	lookY Camera look at coordinate.
float	lookZ Camera look at coordinate.
int	mouseX Mouse coordinate given by mouse events.
int	mouseY Mouse coordinate given by mouse events.
int	moveCounter A counter which is used to keep track of inertia.
private ViewPanel	pv The parent panel of this camera.
float	rotAngle Angle which determines how much the world/globe should be rotated relative to the camera
float	speedX The motion vector calculated by mouse events.
float	speedY The motion vector calculated by mouse events.
private float	tilt This is the tilt of the lookAt vector.
float	tiltAngle Angle which determines the tilt angle (around relative camera x axis).
boolean	tilting Specifies if we are currently in tilting mode.
float	upX The Camera "up" vector coordinate.
float	upY The Camera "up" vector coordinate.
float	upZ The Camera "up" vector coordinate.
float	zoom The zoom distance of the camera.

Constructor Summary

Camera(int id, ViewPanel parentView)
A constructor which sets up the camera.

Method Summary

void	mDragged(int x, int y) To be called when the mouse is dragged.
void	mPressed(int x, int y) To be called when the mouse is pressed.
void	mReleased() To be called when the mouse is pressed.
void	mWheelMoved(int w) To be called when the mousewheel is scrolled.
void	tilt(float t) Updates the tilt of the tilt of the lookAt vector.
void	update() Updates the camera.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

id

private int id

The view id for this camera.

tilting

public boolean tilting

Specifies if we are currently in tilting mode.

dragging

public boolean dragging

A flag used to determine wheter the mouse is dragging or not.

camX

public float camX

Camera coordinate.

camY

public float camY

Camera coordinate.

camZ

public float camZ

Camera coordinate.

lookX

public float lookX

Camera look at coordinate.

lookY

public float lookY

Camera look at coordinate.

lookZ

public float lookZ

Camera look at coordinate.

upX

public float upX

The Camera "up" vector coordinate.

upY

public float upY

The Camera "up" vector coordinate.

upZ

public float upZ

The Camera "up" vector coordinate.

zoom

public float zoom

The zoom distance of the camera.

mouseX

public int mouseX

Mouse coordinate given by mouse events.

mouseY

public int mouseY

Mouse coordinate given by mouse events.

speedX

public float speedX

The motion vector calculated by mouse events.

speedY

public float speedY

The motion vector calculated by mouse events.

rotAngle

public float rotAngle

Angle which determines how much the world/globe should be rotated relative to the camera

tiltAngle

public float tiltAngle

Angle which determines the tilt angle (around relative camera x axis).

moveCounter

public int moveCounter

A counter which is used to keep track of inertia.

pv

private ViewPanel pv

The parent panel of this camera. pv stands for Parent View.

tilt

private float tilt

This is the tilt of the lookAt vector. This is not the same as tiltAngle which specifies tilt of the camera.

Constructor Detail

Camera

public Camera(int id,
              ViewPanel parentView)

A constructor which sets up the camera.

Parameters:

id - The view id for this camera.

parentView - The ViewPanel which this camera belongs to.

Method Detail

mPressed

public void mPressed(int x,
                     int y)

To be called when the mouse is pressed. Sets dragging mode on.

Parameters:

x - Mouse coordinate.

y - Mouse coordinate.

tilt

public void tilt(float t)

Updates the tilt of the tilt of the lookAt vector.

Parameters:

t - Specifies the magnitude and direction of the tilt.

mReleased

public void mReleased()

To be called when the mouse is pressed. Cancels dragging mode.

mWheelMoved

public void mWheelMoved(int w)

To be called when the mousewheel is scrolled. Updates the zoom.

Parameters:

w - The amount the wheel was scrolled.

mDragged

public void mDragged(int x,
                     int y)

To be called when the mouse is dragged. Updates the speed/motion vector.

Parameters:

x - Mouse coordinate.

y - Mouse coordinate.

update

public void update()

Updates the camera. Should be called with even intervalls. Tuned for 20-30ups (updates per second). Keeps track of cool stuff like the up-vector and inertia.