com.sun.j3d.utils.geometry.compression

Class GeometryCompressor

java.lang.Object

com.sun.j3d.utils.geometry.compression.GeometryCompressor

public class GeometryCompressor
extends java.lang.Object

A GeometryCompressor takes a stream of geometric elements and quantization parameters (the CompressionStream object) and compresses it into a stream of commands as defined by appendix B of the Java 3D specification. The resulting data may be output in the form of a CompressedGeometryData node component or appended to a CompressedGeometryFile.

Since:

Java 3D 1.5

See Also:

CompressionStream, CompressedGeometryData, CompressedGeometryFile

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	benchmark
private CompressedGeometryData.Header	cgHeader
private HuffmanTable	huffmanTable
private CommandStream	outputBuffer
private static boolean	printHuffman
private static boolean	printStream
private long	startTime

Constructor Summary

Constructors

Constructor and Description
GeometryCompressor()

Method Summary

Methods

Modifier and Type	Method and Description
CompressedGeometryData	compress(CompressionStream stream) Compress a stream into a CompressedGeometryData node component.
void	compress(CompressionStream stream, CompressedGeometryFile f) Compress a stream and append the output to a CompressedGeometryFile.
private void	compressStream(CompressionStream stream)
private void	printBench(CompressionStream stream)

Methods inherited from class java.lang.Object

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

Field Detail

benchmark

private static final boolean benchmark

See Also:

Constant Field Values

printStream

private static final boolean printStream

See Also:

Constant Field Values

printHuffman

private static final boolean printHuffman

See Also:

Constant Field Values

huffmanTable

private HuffmanTable huffmanTable

outputBuffer

private CommandStream outputBuffer

cgHeader

private CompressedGeometryData.Header cgHeader

startTime

private long startTime

Constructor Detail

GeometryCompressor

public GeometryCompressor()

Method Detail

compress

public CompressedGeometryData compress(CompressionStream stream)

Compress a stream into a CompressedGeometryData node component.

Parameters:

stream - CompressionStream containing the geometry to be compressed

Returns:

a CompressedGeometryData node component

compress

public void compress(CompressionStream stream,
            CompressedGeometryFile f)
              throws java.io.IOException

Compress a stream and append the output to a CompressedGeometryFile. The resource remains open for subsequent updates; its close() method must be called to create a valid compressed geometry resource file.

Parameters:

stream - CompressionStream containing the geometry to be compressed

f - a currently open CompressedGeometryFile with write access

Throws:

java.io.IOException - if write fails

compressStream

private void compressStream(CompressionStream stream)

printBench

private void printBench(CompressionStream stream)