de.gurkenlabs.litiengine.util.io

Class SerializationHelper

java.lang.Object

de.gurkenlabs.litiengine.util.io.SerializationHelper

public class SerializationHelper
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static float	decodeAngle(byte encodedAngle) Decodes a previously encoded angle.
static float	decodeAngleFromShort(short encodedAngle)
static float	decodeSmallFloatingPointNumber(short encodedNumber, int precision) Decodes a small floating point number, previously encoded with encodeSmallFloatingPointNumber.
static byte	encodeAngle(float angle) Encodes an angle, loosing some precision.
static short	encodeAngleToShort(float angle)
static short	encodeSmallFloatingPointNumber(float smallNumber, int precision) Encodes positive numbers less than Short.MAX_VALUE * 2 / precision (6553.4 for precision = 1).

Methods inherited from class java.lang.Object

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

Method Detail

decodeAngle

public static float decodeAngle(byte encodedAngle)

Decodes a previously encoded angle.

Parameters:

encodedAngle - The encoded angle.

Returns:

The decoded angle.

decodeAngleFromShort

public static float decodeAngleFromShort(short encodedAngle)

decodeSmallFloatingPointNumber

public static float decodeSmallFloatingPointNumber(short encodedNumber,
                                                   int precision)

Decodes a small floating point number, previously encoded with encodeSmallFloatingPointNumber.

Parameters:

encodedNumber - The encoded number

precision - The precision of the encoded number. The same precision, used for encoding.

Returns:

The decoded small floating point number.

encodeAngle

public static byte encodeAngle(float angle)

Encodes an angle, loosing some precision. The encoded / decoded values can differ at max. around 1.43 degrees from the original one.

Parameters:

angle - The angle

Returns:

The encoded angle.

encodeAngleToShort

public static short encodeAngleToShort(float angle)

encodeSmallFloatingPointNumber

public static short encodeSmallFloatingPointNumber(float smallNumber,
                                                   int precision)

Encodes positive numbers less than Short.MAX_VALUE * 2 / precision (6553.4 for precision = 1).

Parameters:

smallNumber - The small number to encode

precision - The comma precision for the encoding process.

Returns:

The encoded number.