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java.lang.Objectorg.apache.fop.util.bitmap.DitherUtil
public class DitherUtil
Utility methods for dithering.
Field Summary | |
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static int |
DITHER_MATRIX_2X2
Selects a 2x2 Bayer dither matrix (5 grayscales) |
static int |
DITHER_MATRIX_4X4
Selects a 4x4 Bayer dither matrix (17 grayscales) |
static int |
DITHER_MATRIX_8X8
Selects a 8x8 Bayer dither matrix (65 grayscales) |
Constructor Summary | |
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DitherUtil()
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Method Summary | |
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static int[] |
getBayerBasePattern(int matrix)
Returns the Bayer dither base pattern for a particular matrix size. |
static byte[] |
getBayerDither(int matrix,
java.awt.Color col,
boolean doubleMatrix)
Returns a byte array containing the dither pattern for the given 8-bit gray value. |
static byte[] |
getBayerDither(int matrix,
int gray255,
boolean doubleMatrix)
Returns a byte array containing the dither pattern for the given 8-bit gray value. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int DITHER_MATRIX_2X2
public static final int DITHER_MATRIX_4X4
public static final int DITHER_MATRIX_8X8
Constructor Detail |
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public DitherUtil()
Method Detail |
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public static int[] getBayerBasePattern(int matrix)
matrix
- the matrix size (DITHER_MATRIX_2X2
, DITHER_MATRIX_4X4
or DITHER_MATRIX_8X8
)
public static byte[] getBayerDither(int matrix, int gray255, boolean doubleMatrix)
matrix
- the matrix size (DITHER_MATRIX_2X2
, DITHER_MATRIX_4X4
or DITHER_MATRIX_8X8
)gray255
- the gray value (0-255)doubleMatrix
- true if the 4x4 matrix shall be doubled to a 8x8
public static byte[] getBayerDither(int matrix, java.awt.Color col, boolean doubleMatrix)
matrix
- the matrix size (DITHER_MATRIX_2X2
, DITHER_MATRIX_4X4
or DITHER_MATRIX_8X8
)col
- the colordoubleMatrix
- true if the 4x4 matrix shall be doubled to a 8x8
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