com.sun.j3d.utils.compression

Class CompressionStreamColor

java.lang.Object

com.sun.j3d.utils.compression.CompressionStreamElement

com.sun.j3d.utils.compression.CompressionStreamColor

 class CompressionStreamColor
extends CompressionStreamElement

This class represents a color in a compression stream. It maintains both floating-point and quantized representations. This color may be bundled with a vertex or exist separately as a global color.

Field Summary

Fields

Modifier and Type	Field and Description
private int	A
(package private) int	aAbsolute
private int	B
(package private) int	bAbsolute
private boolean	color3
private boolean	color4
private float	colorA
private float	colorB
private float	colorG
private float	colorR
private int	G
(package private) int	gAbsolute
private int	R
(package private) int	rAbsolute

Fields inherited from class com.sun.j3d.utils.compression.CompressionStreamElement

absolute, length, lengthMask, quantizationMask, shift

Constructor Summary

Constructors

Constructor and Description
CompressionStreamColor(CompressionStream stream, Color3f c3) Create a CompressionStreamColor.
CompressionStreamColor(CompressionStream stream, Color4f c4) Create a CompressionStreamColor.

Method Summary

Methods

Modifier and Type	Method and Description
private void	outputColor(HuffmanTable table, CommandStream output, int header, int headerLength)
(package private) void	outputCommand(HuffmanTable table, CommandStream output) Output a setColor command.
(package private) void	outputSubcommand(HuffmanTable table, CommandStream output) Output a color subcommand.
(package private) void	quantize(CompressionStream stream, HuffmanTable huffmanTable) Quantize a floating point color to fixed point integer components of the specified number of bits.
java.lang.String	toString()

Methods inherited from class com.sun.j3d.utils.compression.CompressionStreamElement

computeLengthShift, computeLengthShift, computeLengthShift

Methods inherited from class java.lang.Object

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

Field Detail

R

private int R

G

private int G

B

private int B

A

private int A

color3

private boolean color3

color4

private boolean color4

colorR

private float colorR

colorG

private float colorG

colorB

private float colorB

colorA

private float colorA

rAbsolute

int rAbsolute

gAbsolute

int gAbsolute

bAbsolute

int bAbsolute

aAbsolute

int aAbsolute

Constructor Detail

CompressionStreamColor

CompressionStreamColor(CompressionStream stream,
                      Color3f c3)

Create a CompressionStreamColor.

Parameters:

stream - CompressionStream associated with this element

color3 - floating-point representation to be encoded

CompressionStreamColor

CompressionStreamColor(CompressionStream stream,
                      Color4f c4)

Create a CompressionStreamColor.

Parameters:

stream - CompressionStream associated with this element

color4 - floating-point representation to be encoded

Method Detail

quantize

void quantize(CompressionStream stream,
            HuffmanTable huffmanTable)

Quantize a floating point color to fixed point integer components of the specified number of bits. The bit length can range from a maximum of 16 to a minimum of 2 bits since negative colors are not defined.

The bit length is the total number of bits in the signed version of the fixed point representation of the input color, which is assumed to be normalized into the [0..1) range. With the maximum bit length of 16, 15 bits of positive colors can be represented; a bit length of 9 is needed to get the 8 bit positive color size in common use.

Specified by:

quantize in class CompressionStreamElement

Parameters:

stream - CompressionStream associated with this element

table - HuffmanTable for collecting data about the quantized representation of this element

outputCommand

void outputCommand(HuffmanTable table,
                 CommandStream output)

Output a setColor command.

Overrides:

outputCommand in class CompressionStreamElement

Parameters:

table - HuffmanTable mapping quantized representations to compressed encodings

output - CommandStream for collecting compressed output

outputSubcommand

void outputSubcommand(HuffmanTable table,
                    CommandStream output)

Output a color subcommand.

Parameters:

table - HuffmanTable mapping quantized representations to compressed encodings

output - CommandStream for collecting compressed output

outputColor

private void outputColor(HuffmanTable table,
               CommandStream output,
               int header,
               int headerLength)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object