org.openbp.cockpit.modeler.figures.generic
Class CircleConstants

java.lang.Object
  org.openbp.cockpit.modeler.figures.generic.CircleConstants

public class CircleConstants
extends java.lang.Object

Constants describing circle sections. There are three types of constants: The orthogonal constants (RIGHT/BOTTOM/LEFT/TOP) are the simplest ones. The quarter constants (QUARTER_*) are aliases of the orthogonal constants above and are used to desribe the circle quarters that are oriented in these directions. The EIGTH_* constants divide the circle in eight directions.

Author:

Heiko Erhardt

Field Summary

static int	EIGHTH_E E (right)
static int	EIGHTH_N N (top)
static int	EIGHTH_NE NE (top left)
static int	EIGHTH_NW NW (top left)
static int	EIGHTH_S S (bottom)
static int	EIGHTH_SE SE (bottom right)
static int	EIGHTH_SW SW (bottom left)
static int	EIGHTH_W W (left)

Method Summary

static int	determineEighth(double angle, java.awt.Rectangle rect) Determines the eighth from a given angle.
static Orientation	determineOrientation(double angle, java.awt.Rectangle rect) Determines the orientation from a given angle.
static Quarter	determineQuarter(double angle, java.awt.Rectangle rect) Determines the quarter from a given angle.
static double	normalizeAngle(double angle) Normalizes an angle.

Methods inherited from class java.lang.Object

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

Field Detail

EIGHTH_E

public static final int EIGHTH_E

E (right)

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Constant Field Values

EIGHTH_SE

public static final int EIGHTH_SE

SE (bottom right)

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Constant Field Values

EIGHTH_S

public static final int EIGHTH_S

S (bottom)

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Constant Field Values

EIGHTH_SW

public static final int EIGHTH_SW

SW (bottom left)

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Constant Field Values

EIGHTH_W

public static final int EIGHTH_W

W (left)

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Constant Field Values

EIGHTH_NW

public static final int EIGHTH_NW

NW (top left)

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Constant Field Values

EIGHTH_N

public static final int EIGHTH_N

N (top)

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Constant Field Values

EIGHTH_NE

public static final int EIGHTH_NE

NE (top left)

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Constant Field Values

Method Detail

normalizeAngle

public static double normalizeAngle(double angle)

Normalizes an angle.

Parameters:

angle - Angle to normalize

Returns:

The angle in the range [0;2 * PI]

determineEighth

public static int determineEighth(double angle,
                                  java.awt.Rectangle rect)

Determines the eighth from a given angle.

Parameters:

angle - Angle to check

rect - Display box of the object in the center

Returns:

CircleConstants.EIGHT_*

determineQuarter

public static Quarter determineQuarter(double angle,
                                       java.awt.Rectangle rect)

Determines the quarter from a given angle.

Parameters:

angle - Angle to check

rect - Display box of the object in the center

Returns:

Quarter.SE/Quarter.SW/Quarter.NW/Quarter.NE

determineOrientation

public static Orientation determineOrientation(double angle,
                                               java.awt.Rectangle rect)

Determines the orientation from a given angle.

Parameters:

angle - Angle to check

rect - Display box of the object in the center

Returns:

Orientation.RIGHT/Orientation.BOTTOM/Orientation.LEFT/Orientation.TOP