Class CompressedGeometryData.Header
- java.lang.Object
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- com.sun.j3d.utils.geometry.compression.CompressedGeometryData.Header
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- Enclosing class:
- CompressedGeometryData
public static class CompressedGeometryData.Header extends java.lang.Object
The Header class is a data container for the header information, used in conjunction with a CompressedGeometryData object. This information is used to aid the decompression of the compressed geometry.All instance data is declared public and no get or set methods are provided.
- Since:
- Java 3D 1.5
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Field Summary
Fields Modifier and Type Field Description static int
ALPHA_IN_BUFFER
bufferDataPresent: bit indicating that alpha information is bundled with the vertices in the compressed geometry buffer.int
bufferDataPresent
Contains bits indicating what data is bundled with the vertices in the compressed geometry buffer.int
bufferType
Describes the type of data in the compressed geometry buffer.static int
COLOR_IN_BUFFER
bufferDataPresent: bit indicating that RGB color information is bundled with the vertices in the compressed geometry buffer.static int
LINE_BUFFER
bufferType: compressed geometry is made up of line segments.javax.vecmath.Point3d
lowerBound
A point that defines the lower bound of the x, y, and z components for all positions in the compressed geometry buffer.int
majorVersionNumber
The major version number for the compressed geometry format that was used to compress the geometry.int
minorMinorVersionNumber
The minor-minor version number for the compressed geometry format that was used to compress the geometry.int
minorVersionNumber
The minor version number for the compressed geometry format that was used to compress the geometry.static int
NORMAL_IN_BUFFER
bufferDataPresent: bit indicating that normal information is bundled with the vertices in the compressed geometry buffer.static int
POINT_BUFFER
bufferType: compressed geometry is made up of individual points.int
size
Size of the compressed geometry in bytes.int
start
Offset in bytes of the start of the compressed geometry from the beginning of the compressed geometry byte array passed to the CompressedGeometryData constructor.static int
TRIANGLE_BUFFER
bufferType: compressed geometry is made up of triangles.javax.vecmath.Point3d
upperBound
A point that defines the upper bound of the x, y, and z components for all positions in the compressed geometry buffer.
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Constructor Summary
Constructors Constructor Description Header()
Creates a new Header object used for the creation of a CompressedGeometryData object.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
toString()
Returns a String describing the contents of the Header object.
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Field Detail
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POINT_BUFFER
public static final int POINT_BUFFER
bufferType: compressed geometry is made up of individual points.- See Also:
- Constant Field Values
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LINE_BUFFER
public static final int LINE_BUFFER
bufferType: compressed geometry is made up of line segments.- See Also:
- Constant Field Values
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TRIANGLE_BUFFER
public static final int TRIANGLE_BUFFER
bufferType: compressed geometry is made up of triangles.- See Also:
- Constant Field Values
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NORMAL_IN_BUFFER
public static final int NORMAL_IN_BUFFER
bufferDataPresent: bit indicating that normal information is bundled with the vertices in the compressed geometry buffer.- See Also:
- Constant Field Values
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COLOR_IN_BUFFER
public static final int COLOR_IN_BUFFER
bufferDataPresent: bit indicating that RGB color information is bundled with the vertices in the compressed geometry buffer.- See Also:
- Constant Field Values
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ALPHA_IN_BUFFER
public static final int ALPHA_IN_BUFFER
bufferDataPresent: bit indicating that alpha information is bundled with the vertices in the compressed geometry buffer.- See Also:
- Constant Field Values
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majorVersionNumber
public int majorVersionNumber
The major version number for the compressed geometry format that was used to compress the geometry. If the version number of compressed geometry is incompatible with the supported version of compressed geometry in the current version of Java 3D, the compressed geometry obejct will not be rendered.- See Also:
Canvas3D#queryProperties
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minorVersionNumber
public int minorVersionNumber
The minor version number for the compressed geometry format that was used to compress the geometry. If the version number of compressed geometry is incompatible with the supported version of compressed geometry in the current version of Java 3D, the compressed geometry obejct will not be rendered.- See Also:
Canvas3D#queryProperties
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minorMinorVersionNumber
public int minorMinorVersionNumber
The minor-minor version number for the compressed geometry format that was used to compress the geometry. If the version number of compressed geometry is incompatible with the supported version of compressed geometry in the current version of Java 3D, the compressed geometry obejct will not be rendered.- See Also:
Canvas3D#queryProperties
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bufferType
public int bufferType
Describes the type of data in the compressed geometry buffer. Only one type may be present in any given compressed geometry buffer.
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bufferDataPresent
public int bufferDataPresent
Contains bits indicating what data is bundled with the vertices in the compressed geometry buffer. If this data is not present (e.g. color) then this info will be inherited from the Appearance node.
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size
public int size
Size of the compressed geometry in bytes.
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start
public int start
Offset in bytes of the start of the compressed geometry from the beginning of the compressed geometry byte array passed to the CompressedGeometryData constructor.If the CompressedGeometryData is created with reference access semantics, then this allow external compressors or file readers to embed several blocks of compressed geometry in a single large byte array, possibly interspersed with metadata that is not specific to Java 3D, without having to copy each block to a separate byte array.
If the CompressedGeometryData is created with copy access semantics, then
size
bytes of compressed geometry data are copied from the offset indicated bystart
instead of copying the entire byte array. The getCompressedGeometry() method will return only the bytes used to construct the object, and the getCompressedGeometryHeader() method will return a header with thestart
field set to 0.
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lowerBound
public javax.vecmath.Point3d lowerBound
A point that defines the lower bound of the x, y, and z components for all positions in the compressed geometry buffer. If null, a lower bound of (-1,-1,-1) is assumed. Java 3D will use this information to construct a bounding box around compressed geometry objects that are used in nodes for which the auto compute bounds flag is true. The default value for this point is null.
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upperBound
public javax.vecmath.Point3d upperBound
A point that defines the upper bound of the x, y, and z components for all positions in the compressed geometry buffer. If null, an upper bound of (1,1,1) is assumed. Java 3D will use this information to construct a bounding box around compressed geometry objects that are used in nodes for which the auto compute bounds flag is true. The default value for this point is null.
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Constructor Detail
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Header
public Header()
Creates a new Header object used for the creation of a CompressedGeometryData object. All instance data is declared public and no get or set methods are provided. All values are set to 0 by default and must be filled in by the application.- See Also:
CompressedGeometryData
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