Package com.jme3.input

Class FlyByCamera

java.lang.Object

com.jme3.input.FlyByCamera

All Implemented Interfaces:

ActionListener, AnalogListener, InputListener

public class FlyByCamera
extends Object
implements AnalogListener, ActionListener

A first-person camera controller. After creation, you (or FlyCamAppState) must register the controller using registerWithInput(com.jme3.input.InputManager). Controls: - Move (or, in drag-to-rotate mode, drag) the mouse to rotate the camera - Mouse wheel for zooming in or out - WASD keys for moving forward/backward and strafing - QZ keys raise or lower the camera

Field Summary

Fields

Modifier and Type	Field	Description
protected Camera	cam	camera controlled by this controller (not null)
protected boolean	canRotate
protected boolean	dragToRotate	drag-to-rotate mode flag
protected boolean	enabled	enable flag for controller (false→ignoring input)
protected Vector3f	initialUpVec	normalized "up" direction (a unit vector)
protected InputManager	inputManager
protected boolean	invertY
protected MotionAllowedListener	motionAllowed
protected float	moveSpeed	translation speed (in world units per second)
protected float	rotationSpeed	rotation-rate multiplier (1=default)
protected float	zoomSpeed	zoom-rate multiplier (1=default)

Constructor Summary

Constructors

Constructor	Description
FlyByCamera(Camera cam)	Creates a new FlyByCamera to control the specified camera.

Method Summary

Modifier and Type	Method	Description
float	getMoveSpeed()	Read the translation speed.
float	getRotationSpeed()	Read the rotation-rate multiplier.
float	getZoomSpeed()	Read the zoom-rate multiplier.
boolean	isDragToRotate()	Test whether drag-to-rotate mode is enabled.
boolean	isEnabled()	Test whether this controller is enabled.
protected void	mapJoystick(Joystick joystick)
protected void	moveCamera(float value, boolean sideways)	Translate the camera left or forward by the specified amount.
void	onAction(String name, boolean value, float tpf)	Callback to notify this controller of an action input event.
void	onAnalog(String name, float value, float tpf)	Callback to notify this controller of an analog input event.
void	registerWithInput(InputManager inputManager)	Register this controller to receive input events from the specified input manager.
protected void	riseCamera(float value)	Translate the camera upward by the specified amount.
protected void	rotateCamera(float value, Vector3f axis)	Rotate the camera by the specified amount around the specified axis.
void	setDragToRotate(boolean dragToRotate)	Enable or disable drag-to-rotate mode.
void	setEnabled(boolean enable)	Enable or disable this controller.
void	setMotionAllowedListener(MotionAllowedListener listener)
void	setMoveSpeed(float moveSpeed)	Set the translation speed.
void	setRotationSpeed(float rotationSpeed)	Set the rotation-rate multiplier.
void	setUpVector(Vector3f upVec)	Sets the up vector that should be used for the camera.
void	setZoomSpeed(float zoomSpeed)	Set the zoom-rate multiplier.
void	unregisterInput()	Unregister this controller from its input manager.
protected void	zoomCamera(float value)	Zoom the camera by the specified amount.

Methods inherited from class java.lang.Object

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

Field Details

cam

protected Camera cam

camera controlled by this controller (not null)

initialUpVec

protected Vector3f initialUpVec

normalized "up" direction (a unit vector)

rotationSpeed

protected float rotationSpeed

rotation-rate multiplier (1=default)

moveSpeed

protected float moveSpeed

translation speed (in world units per second)

zoomSpeed

protected float zoomSpeed

zoom-rate multiplier (1=default)

motionAllowed

protected MotionAllowedListener motionAllowed

enabled

protected boolean enabled

enable flag for controller (false→ignoring input)

dragToRotate

protected boolean dragToRotate

drag-to-rotate mode flag

canRotate

protected boolean canRotate

invertY

protected boolean invertY

inputManager

protected InputManager inputManager

Constructor Details

FlyByCamera

public FlyByCamera(Camera cam)

Creates a new FlyByCamera to control the specified camera.

Parameters:

cam - camera to be controlled (not null)

Method Details

setUpVector

public void setUpVector(Vector3f upVec)

Sets the up vector that should be used for the camera.

Parameters:

upVec - the desired direction (not null, unaffected)

setMotionAllowedListener

public void setMotionAllowedListener(MotionAllowedListener listener)

setMoveSpeed

public void setMoveSpeed(float moveSpeed)

Set the translation speed.

Parameters:

moveSpeed - new speed (in world units per second)

getMoveSpeed

public float getMoveSpeed()

Read the translation speed.

Returns:

current speed (in world units per second)

setRotationSpeed

public void setRotationSpeed(float rotationSpeed)

Set the rotation-rate multiplier. The bigger the multiplier, the more rotation for a given movement of the mouse.

Parameters:

rotationSpeed - new rate multiplier (1=default)

getRotationSpeed

public float getRotationSpeed()

Read the rotation-rate multiplier. The bigger the multiplier, the more rotation for a given movement of the mouse.

Returns:

current rate multiplier (1=default)

setZoomSpeed

public void setZoomSpeed(float zoomSpeed)

Set the zoom-rate multiplier. The bigger the multiplier, the more zoom for a given movement of the mouse wheel.

Parameters:

zoomSpeed - new rate multiplier (1=default)

getZoomSpeed

public float getZoomSpeed()

Read the zoom-rate multiplier. The bigger the multiplier, the more zoom for a given movement of the mouse wheel.

Returns:

current rate multiplier (1=default)

setEnabled

public void setEnabled(boolean enable)

Enable or disable this controller. When disabled, the controller ignored input.

Parameters:

enable - true to enable, false to disable

isEnabled

public boolean isEnabled()

Test whether this controller is enabled.

Returns:

true if enabled, otherwise false

See Also:

• setEnabled(boolean)

isDragToRotate

public boolean isDragToRotate()

Test whether drag-to-rotate mode is enabled.

Returns:

If drag to rotate feature is enabled.

See Also:

• setDragToRotate(boolean)

setDragToRotate

public void setDragToRotate(boolean dragToRotate)

Enable or disable drag-to-rotate mode. When drag-to-rotate mode is enabled, the user must hold the mouse button and drag over the screen to rotate the camera, and the cursor is visible until dragged. When drag-to-rotate mode is disabled, the cursor is invisible at all times and holding the mouse button is not needed to rotate the camera. This mode is disabled by default.

Parameters:

dragToRotate - true to enable, false to disable

registerWithInput

public void registerWithInput(InputManager inputManager)

Register this controller to receive input events from the specified input manager.

Parameters:

inputManager - (not null, alias created)

mapJoystick

protected void mapJoystick(Joystick joystick)

unregisterInput

public void unregisterInput()

Unregister this controller from its input manager.

rotateCamera

protected void rotateCamera(float value,
 Vector3f axis)

Rotate the camera by the specified amount around the specified axis.

Parameters:

value - rotation amount

axis - direction of rotation (a unit vector)

zoomCamera

protected void zoomCamera(float value)

Zoom the camera by the specified amount.

Parameters:

value - zoom amount

riseCamera

protected void riseCamera(float value)

Translate the camera upward by the specified amount.

Parameters:

value - translation amount

moveCamera

protected void moveCamera(float value,
 boolean sideways)

Translate the camera left or forward by the specified amount.

Parameters:

value - translation amount

sideways - true→left, false→forward

onAnalog

public void onAnalog(String name,
 float value,
 float tpf)

Callback to notify this controller of an analog input event.

Specified by:

onAnalog in interface AnalogListener

Parameters:

name - name of the input event

value - value of the axis (from 0 to 1)

tpf - time per frame (in seconds)

onAction

public void onAction(String name,
 boolean value,
 float tpf)

Callback to notify this controller of an action input event.

Specified by:

onAction in interface ActionListener

Parameters:

name - name of the input event

value - true if the action is "pressed", false otherwise

tpf - time per frame (in seconds)