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Java Source Code / Java Documentation » 6.0 JDK Modules » java 3d » com.sun.j3d.utils.compression   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.sun.j3d.utils.compression.CompressedGeometryFile CompressedGeometryFile public class CompressedGeometryFile (Code) This class provides methods to read and write compressed geometry resource files. These files usually end with the .cg extension and support sequential as well as random access to multiple compressed geometry objects. com.sun.j3d.utils.geometry.compression.CompressedGeometryFile Field Summary final static  int ALPHA_PRESENT_MASK      Bit in compressed geometry data descriptor encoding presence of alphas. final static  int BLOCK_HEADER_SIZE      Block header total size in bytes. final static  int COLOR_PRESENT_MASK      Bit in compressed geometry data descriptor encoding presence of colors. final static  int DIRECTORY_OFFSET_OFFSET      Byte offset of the directory offset from start of file. final static  int GEOM_DATA_OFFSET      Byte offset of the compressed geometry data descriptor from start of individual compressed geometry block. final static  int HEADER_SIZE      File header total size in bytes. final static  int MAGIC_NUMBER      The magic number which identifies the compressed geometry file type. final static  int MAGIC_NUMBER_OFFSET      Byte offset of the magic number from start of file. final static  int MAJOR_VERSION_OFFSET      Byte offset of the major version number from start of file. final static  int MINOR_MINOR_VERSION_OFFSET      Byte offset of the minor minor version number from start of file. final static  int MINOR_VERSION_OFFSET      Byte offset of the minor version number from start of file. final static  int NORMAL_PRESENT_MASK      Bit in compressed geometry data descriptor encoding presence of normals. final static  int OBJECT_COUNT_OFFSET      Byte offset of the number of objects from start of file. final static  int OBJECT_SIZE_OFFSET      Byte offset of the object size from start of individual compressed geometry block. final static  int TYPE_LINE      Value in compressed geometry data descriptor for a line buffer type. final static  int TYPE_MASK      Bits in compressed geometry data descriptor which encode the buffer type. final static  int TYPE_POINT      Value in compressed geometry data descriptor for a point buffer type. final static  int TYPE_TRIANGLE      Value in compressed geometry data descriptor for a triangle buffer type.  int bufferNextObjectCount       int bufferNextObjectOffset       int bufferObjectCount       int bufferObjectStart       byte cgBuffer       RandomAccessFile cgFile       CompressedGeometryHeader cgh       long directory       long directoryOffset       String fileName       boolean fileUpdate       int geomDataType       int geomSize       int geomStart       int magicNumber       int majorVersionNumber       int minorMinorVersionNumber       int minorVersionNumber       int objectCount       int objectIndex       int objectSizes      Constructor Summary public   CompressedGeometryFile(String file)      Construct a new CompressedGeometryFile instance associated with the specified file. public   CompressedGeometryFile(String file, boolean rw)      Construct a new CompressedGeometryFile instance associated with the specified file. public   CompressedGeometryFile(RandomAccessFile file)      Construct a new CompressedGeometryFile instance associated with a currently open RandomAccessFile. Method Summary public  void clear()      Delete all compressed objects from this instance. public  void close()      Release the resources associated with this instance. protected  void finalize()      Release file resources when this object is garbage collected. public  int getCurrentIndex()      Return the current object index associated with this instance. public  String getFileName()      Return a string containing the file name associated with this instance or null if there is none. public  int getMajorVersionNumber()      Return the major version number of the most recent compressor used to compress any of the objects in this instance. public  int getMinorMinorVersionNumber()      Return the subminor version number of the most recent compressor used to compress any of the objects in this instance. public  int getMinorVersionNumber()      Return the minor version number of the most recent compressor used to compress any of the objects in this instance. public  int getObjectCount()      Return the number of compressed objects in this instance.  void initialize()       CompressedGeometry newCG(int geomSize, int geomStart, int geomDataType)       void open(String fname, boolean rw)      public  CompressedGeometry[] read()      Read all compressed geometry objects contained in the instance. public  CompressedGeometry read(int index)      Read the compressed geometry object at the specified index.  void readDirectory(long offset, long[] directory)       void readFileHeader()      public  CompressedGeometry readNext()      Read the next compressed geometry object in the instance.  CompressedGeometry readNext(int bufferReadLimit)       void setFilePointer(long offset)      public  void write(CompressedGeometry cg)      Add a compressed geometry node component to the end of the instance. The current object index becomes invalid; an immediately following call to readNext() will return null. public  void write(CompressedGeometryHeader cgh, byte geometry)      Add a buffer of compressed geometry data to the end of the resource.  void writeFileDirectory()       void writeFileHeader()      Field Detail ALPHA_PRESENT_MASK final static int ALPHA_PRESENT_MASK(Code) Bit in compressed geometry data descriptor encoding presence of alphas. BLOCK_HEADER_SIZE final static int BLOCK_HEADER_SIZE(Code) Block header total size in bytes. COLOR_PRESENT_MASK final static int COLOR_PRESENT_MASK(Code) Bit in compressed geometry data descriptor encoding presence of colors. DIRECTORY_OFFSET_OFFSET final static int DIRECTORY_OFFSET_OFFSET(Code) Byte offset of the directory offset from start of file. This offset is long word aligned since the directory offset is a long. GEOM_DATA_OFFSET final static int GEOM_DATA_OFFSET(Code) Byte offset of the compressed geometry data descriptor from start of individual compressed geometry block. HEADER_SIZE final static int HEADER_SIZE(Code) File header total size in bytes. MAGIC_NUMBER final static int MAGIC_NUMBER(Code) The magic number which identifies the compressed geometry file type. MAGIC_NUMBER_OFFSET final static int MAGIC_NUMBER_OFFSET(Code) Byte offset of the magic number from start of file. MAJOR_VERSION_OFFSET final static int MAJOR_VERSION_OFFSET(Code) Byte offset of the major version number from start of file. MINOR_MINOR_VERSION_OFFSET final static int MINOR_MINOR_VERSION_OFFSET(Code) Byte offset of the minor minor version number from start of file. MINOR_VERSION_OFFSET final static int MINOR_VERSION_OFFSET(Code) Byte offset of the minor version number from start of file. NORMAL_PRESENT_MASK final static int NORMAL_PRESENT_MASK(Code) Bit in compressed geometry data descriptor encoding presence of normals. OBJECT_COUNT_OFFSET final static int OBJECT_COUNT_OFFSET(Code) Byte offset of the number of objects from start of file. OBJECT_SIZE_OFFSET final static int OBJECT_SIZE_OFFSET(Code) Byte offset of the object size from start of individual compressed geometry block. TYPE_LINE final static int TYPE_LINE(Code) Value in compressed geometry data descriptor for a line buffer type. TYPE_MASK final static int TYPE_MASK(Code) Bits in compressed geometry data descriptor which encode the buffer type. TYPE_POINT final static int TYPE_POINT(Code) Value in compressed geometry data descriptor for a point buffer type. TYPE_TRIANGLE final static int TYPE_TRIANGLE(Code) Value in compressed geometry data descriptor for a triangle buffer type. bufferNextObjectCount int bufferNextObjectCount(Code) bufferNextObjectOffset int bufferNextObjectOffset(Code) bufferObjectCount int bufferObjectCount(Code) bufferObjectStart int bufferObjectStart(Code) cgBuffer byte cgBuffer(Code) cgFile RandomAccessFile cgFile(Code) cgh CompressedGeometryHeader cgh(Code) directory long directory(Code) directoryOffset long directoryOffset(Code) fileName String fileName(Code) fileUpdate boolean fileUpdate(Code) geomDataType int geomDataType(Code) geomSize int geomSize(Code) geomStart int geomStart(Code) magicNumber int magicNumber(Code) majorVersionNumber int majorVersionNumber(Code) minorMinorVersionNumber int minorMinorVersionNumber(Code) minorVersionNumber int minorVersionNumber(Code) objectCount int objectCount(Code) objectIndex int objectIndex(Code) objectSizes int objectSizes(Code) Constructor Detail CompressedGeometryFile public CompressedGeometryFile(String file) throws IOException(Code) Construct a new CompressedGeometryFile instance associated with the specified file. An attempt is made to open the file with read-only access; if this fails then a FileNotFoundException is thrown. Parameters:   file - path to the compressed geometry resource file exception:   FileNotFoundException - if file doesn't exist orcannot be read exception:   IllegalArgumentException - if the file is not a compressedgeometry resource file exception:   IOException - if there is a header or directory read error CompressedGeometryFile public CompressedGeometryFile(String file, boolean rw) throws IOException(Code) Construct a new CompressedGeometryFile instance associated with the specified file. Parameters:   file - path to the compressed geometry resource file Parameters:   rw - if true, opens the file for read and write access or attemptsto create one if it doesn't exist; if false, opens the file withread-only access exception:   FileNotFoundException - if file doesn't exist oraccess permissions disallow access exception:   IllegalArgumentException - if the file is not a compressedgeometry resource file exception:   IOException - if there is a header or directory read error CompressedGeometryFile public CompressedGeometryFile(RandomAccessFile file) throws IOException(Code) Construct a new CompressedGeometryFile instance associated with a currently open RandomAccessFile. Parameters:   file - currently open RandomAccessFile exception:   IllegalArgumentException - if the file is not a compressedgeometry resource file exception:   IOException - if there is a header or directory read error Method Detail clear public void clear() throws IOException(Code) Delete all compressed objects from this instance. This method may only be called after successfully creating a CompressedGeometryFile instance with read-write access, so a corrupted or otherwise invalid resource must be removed manually before it can be rewritten. The close() method must be called sometime after invoking clear() in order to write out the new directory structure. exception:   IOException - if clear fails close public void close()(Code) Release the resources associated with this instance. Write out final header and directory if contents were updated. This method must be called in order to create a valid compressed geometry resource file if any updates were made. finalize protected void finalize()(Code) Release file resources when this object is garbage collected. getCurrentIndex public int getCurrentIndex()(Code) Return the current object index associated with this instance. This is the index of the object that would be returned by an immediately following call to the readNext() method. Its initial value is 0; -1 is returned if the last object has been read. current object index, or -1 if at end getFileName public String getFileName()(Code) Return a string containing the file name associated with this instance or null if there is none. file name associated with this instance or null if there isnone getMajorVersionNumber public int getMajorVersionNumber()(Code) Return the major version number of the most recent compressor used to compress any of the objects in this instance. major version number getMinorMinorVersionNumber public int getMinorMinorVersionNumber()(Code) Return the subminor version number of the most recent compressor used to compress any of the objects in this instance. subminor version number getMinorVersionNumber public int getMinorVersionNumber()(Code) Return the minor version number of the most recent compressor used to compress any of the objects in this instance. minor version number getObjectCount public int getObjectCount()(Code) Return the number of compressed objects in this instance. number of compressed objects initialize void initialize() throws IOException(Code) newCG CompressedGeometry newCG(int geomSize, int geomStart, int geomDataType)(Code) open void open(String fname, boolean rw) throws FileNotFoundException, IOException(Code) read public CompressedGeometry[] read() throws IOException(Code) Read all compressed geometry objects contained in the instance. The current object index becomes invalid; an immediately following call to readNext() will return null. an array of CompressedGeometry node components. exception:   IOException - if read fails read public CompressedGeometry read(int index) throws IOException(Code) Read the compressed geometry object at the specified index. The current object index is set to the subsequent object unless the last object has been read, in which case the index becomes invalid and an immediately following call to readNext() will return null. Parameters:   index - compressed geometry object to read a CompressedGeometry node component exception:   IndexOutOfBoundsException - if object index isout of range exception:   IOException - if read fails readDirectory void readDirectory(long offset, long[] directory) throws IOException(Code) readFileHeader void readFileHeader() throws IOException(Code) readNext public CompressedGeometry readNext() throws IOException(Code) Read the next compressed geometry object in the instance. This is initially the first object (index 0) in the instance; otherwise, it is whatever object is next after the last one read. The current object index is incremented by 1 after the read. When the last object is read the index becomes invalid and an immediately subsequent call to readNext() returns null. a CompressedGeometry node component, or null if the last objecthas been read exception:   IOException - if read fails readNext CompressedGeometry readNext(int bufferReadLimit) throws IOException(Code) setFilePointer void setFilePointer(long offset) throws IOException(Code) write public void write(CompressedGeometry cg) throws IOException(Code) Add a compressed geometry node component to the end of the instance. The current object index becomes invalid; an immediately following call to readNext() will return null. The close() method must be called at some later time in order to create a valid compressed geometry file. Parameters:   cg - a compressed geometry node component exception:   CapabilityNotSetException - if unable to get compressedgeometry data from the node component exception:   IOException - if write fails write public void write(CompressedGeometryHeader cgh, byte geometry) throws IOException(Code) Add a buffer of compressed geometry data to the end of the resource. The current object index becomes invalid; an immediately following call to readNext() will return null. The close() method must be called at some later time in order to create a valid compressed geometry file. Parameters:   cgh - a CompressedGeometryHeader object describing the data. Parameters:   geometry - the compressed geometry data exception:   IOException - if write fails writeFileDirectory void writeFileDirectory() throws IOException(Code) writeFileHeader void writeFileHeader() throws IOException(Code) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)