lejos.nxt.addon
Class NXTCam

java.lang.Object
  lejos.nxt.I2CSensor
      lejos.nxt.addon.NXTCam

All Implemented Interfaces:

SensorConstants

public class NXTCam
extends I2CSensor

Mindsensors NXTCam. www.mindsensors.com Author Lawrie Griffiths

WARNING: THIS CLASS IS SHARED BETWEEN THE classes AND pccomms PROJECTS. DO NOT EDIT THE VERSION IN pccomms AS IT WILL BE OVERWRITTEN WHEN THE PROJECT IS BUILT.

Field Summary

static char	COLOR Used by sortBy() to choose sorting criteria based on color id (ordered 0 to 7).
static char	LINE_TRACKING Used by setTrackingMode() to choose line tracking.
static char	NO_SORTING Used by sortBy() to choose no sorting of detected objects.
static char	OBJECT_TRACKING Used by setTrackingMode() to choose object tracking.
static char	SIZE Used by sortBy() to choose sorting criteria based on size (ordered largest to smallest).

Fields inherited from interface lejos.nxt.SensorConstants

MODE_ANGLESTEP, MODE_BOOLEAN, MODE_CELSIUS, MODE_FARENHEIT, MODE_PCTFULLSCALE, MODE_PERIODCOUNTER, MODE_RAW, MODE_TRANSITIONCNT, TYPE_ANGLE, TYPE_CUSTOM, TYPE_LIGHT_ACTIVE, TYPE_LIGHT_INACTIVE, TYPE_LOWSPEED, TYPE_LOWSPEED_9V, TYPE_NO_SENSOR, TYPE_REFLECTION, TYPE_SOUND_DB, TYPE_SOUND_DBA, TYPE_SWITCH, TYPE_TEMPERATURE

Constructor Summary

NXTCam(I2CPort port)

Method Summary

void	enableTracking(boolean enable)
int	getNumberOfObjects() Get the number of objects being tracked
int	getObjectColor(int id) Get the color number for a tracked object
Rectangle	getRectangle(int id) Get the rectangle containing a tracked object
void	sendCommand(char cmd) Send a single byte command represented by a letter
void	setTrackingMode(char mode) Choose either object or line tracking mode.
void	sortBy(char sortType) Camera sorts objects it detects according to criteria, either color, size, or no sorting at all.

Methods inherited from class lejos.nxt.I2CSensor

fetchString, getData, getPort, getProductID, getSensorType, getVersion, sendData, sendData, setAddress

Methods inherited from class java.lang.Object

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

Field Detail

SIZE

public static final char SIZE

Used by sortBy() to choose sorting criteria based on size (ordered largest to smallest).

See Also:

Constant Field Values

COLOR

public static final char COLOR

Used by sortBy() to choose sorting criteria based on color id (ordered 0 to 7).

See Also:

Constant Field Values

NO_SORTING

public static final char NO_SORTING

Used by sortBy() to choose no sorting of detected objects.

See Also:

Constant Field Values

OBJECT_TRACKING

public static final char OBJECT_TRACKING

Used by setTrackingMode() to choose object tracking.

See Also:

Constant Field Values

LINE_TRACKING

public static final char LINE_TRACKING

Used by setTrackingMode() to choose line tracking.

See Also:

Constant Field Values

Constructor Detail

NXTCam

public NXTCam(I2CPort port)

Method Detail

getNumberOfObjects

public int getNumberOfObjects()

Get the number of objects being tracked

Returns:

number of objects (0 - 8)

sortBy

public void sortBy(char sortType)

Camera sorts objects it detects according to criteria, either color, size, or no sorting at all.

Parameters:

sortType - Use the class constants SIZE, COLOR, or NO_SORTING.

enableTracking

public void enableTracking(boolean enable)

Parameters:

enable - true to enable, false to disable

setTrackingMode

public void setTrackingMode(char mode)

Choose either object or line tracking mode.

Parameters:

mode - Use either OBJECT_TRACKING or LINE_TRACKING

getObjectColor

public int getObjectColor(int id)

Get the color number for a tracked object

Parameters:

id - the object number (starting at zero)

Returns:

the color of the object (starting at zero)

getRectangle

public Rectangle getRectangle(int id)

Get the rectangle containing a tracked object

Parameters:

id - the object number (starting at zero)

Returns:

the rectangle

sendCommand

public void sendCommand(char cmd)

Send a single byte command represented by a letter

Parameters:

cmd - the letter that identifies the command