com.itextpdf.kernel.pdf.colorspace.shading

Class PdfLatticeFormGouraudShadedTriangleShading

java.lang.Object

com.itextpdf.kernel.pdf.PdfObjectWrapper<PdfDictionary>

com.itextpdf.kernel.pdf.colorspace.shading.AbstractPdfShading

com.itextpdf.kernel.pdf.colorspace.shading.AbstractPdfShadingMesh

com.itextpdf.kernel.pdf.colorspace.shading.PdfLatticeFormGouraudShadedTriangleShading

public class PdfLatticeFormGouraudShadedTriangleShading
extends AbstractPdfShadingMesh

The class that extends AbstractPdfShading and AbstractPdfShadingMesh classes and is in charge of Shading Dictionary with lattice-form Gouraud-shaded triangle mesh type.

This type is similar to PdfFreeFormGouraudShadedTriangleShading but instead of using free-form geometry, the vertices are arranged in a pseudorectangular lattice, which is topologically equivalent to a rectangular grid. The vertices are organized into rows, which need not be geometrically linear.

The verticals data in stream is similar to PdfFreeFormGouraudShadedTriangleShading, except there is no edge flag.

Constructor Summary

Constructors

Constructor and Description
PdfLatticeFormGouraudShadedTriangleShading(PdfColorSpace cs, int bitsPerCoordinate, int bitsPerComponent, int verticesPerRow, float[] decode) Creates the new instance of the class.
PdfLatticeFormGouraudShadedTriangleShading(PdfColorSpace cs, int bitsPerCoordinate, int bitsPerComponent, int verticesPerRow, PdfArray decode) Creates the new instance of the class.
PdfLatticeFormGouraudShadedTriangleShading(PdfStream pdfStream) Creates the new instance of the class from the existing PdfStream.

Method Summary

Modifier and Type	Method and Description
int	getVerticesPerRow() Gets the number of vertices in each row of the lattice.
void	setVerticesPerRow(int verticesPerRow) Sets the number of vertices in each row of the lattice.

Methods inherited from class com.itextpdf.kernel.pdf.colorspace.shading.AbstractPdfShadingMesh

getBitsPerComponent, getBitsPerCoordinate, getDecode, setBitsPerComponent, setBitsPerCoordinate, setDecode, setDecode

Methods inherited from class com.itextpdf.kernel.pdf.colorspace.shading.AbstractPdfShading

flush, getColorSpace, getFunction, getShadingType, isWrappedObjectMustBeIndirect, makeShading, setFunction, setFunction

Methods inherited from class com.itextpdf.kernel.pdf.PdfObjectWrapper

ensureObjectIsAddedToDocument, ensureUnderlyingObjectHasIndirectReference, getPdfObject, isFlushed, makeIndirect, makeIndirect, markObjectAsIndirect, setForbidRelease, setModified, setPdfObject, unsetForbidRelease

Methods inherited from class java.lang.Object

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

Constructor Detail

PdfLatticeFormGouraudShadedTriangleShading

public PdfLatticeFormGouraudShadedTriangleShading(PdfStream pdfStream)

Creates the new instance of the class from the existing PdfStream.

Parameters:

pdfStream - from which this PdfLatticeFormGouraudShadedTriangleShading will be created

PdfLatticeFormGouraudShadedTriangleShading

public PdfLatticeFormGouraudShadedTriangleShading(PdfColorSpace cs,
                                                  int bitsPerCoordinate,
                                                  int bitsPerComponent,
                                                  int verticesPerRow,
                                                  float[] decode)

Creates the new instance of the class.

Parameters:

cs - the PdfColorSpace object in which colour values shall be expressed. The special Pattern space isn't excepted

bitsPerCoordinate - the number of bits used to represent each vertex coordinate. The value shall be 1, 2, 4, 8, 12, 16, 24, or 32

bitsPerComponent - the number of bits used to represent each colour component. The value shall be 1, 2, 4, 8, 12, or 16

verticesPerRow - the number of vertices in each row of the lattice (shall be > 1). The number of rows need not be specified

decode - the int[] of numbers specifying how to map vertex coordinates and colour components into the appropriate ranges of values. The ranges shall be specified as follows: [x_min x_max y_min y_max c1_min c1_max … cn_min cn_max]. Only one pair of color values shall be specified if a Function entry is present

PdfLatticeFormGouraudShadedTriangleShading

public PdfLatticeFormGouraudShadedTriangleShading(PdfColorSpace cs,
                                                  int bitsPerCoordinate,
                                                  int bitsPerComponent,
                                                  int verticesPerRow,
                                                  PdfArray decode)

Creates the new instance of the class.

Parameters:

cs - the PdfColorSpace object in which colour values shall be expressed. The special Pattern space isn't excepted

bitsPerCoordinate - the number of bits used to represent each vertex coordinate. The value shall be 1, 2, 4, 8, 12, 16, 24, or 32

bitsPerComponent - the number of bits used to represent each colour component. The value shall be 1, 2, 4, 8, 12, or 16

verticesPerRow - the number of vertices in each row of the lattice (shall be > 1). The number of rows need not be specified

decode - the PdfArray of numbers specifying how to map vertex coordinates and colour components into the appropriate ranges of values. The ranges shall be specified as follows: [x_min x_max y_min y_max c1_min c1_max … cn_min cn_max]. Only one pair of color values shall be specified if a Function entry is present

Method Detail

getVerticesPerRow

public int getVerticesPerRow()

Gets the number of vertices in each row of the lattice.

Returns:

the number of vertices. Can only be greater than 1

setVerticesPerRow

public final void setVerticesPerRow(int verticesPerRow)

Sets the number of vertices in each row of the lattice. The number of rows need not be specified.

Parameters:

verticesPerRow - the number of vertices to be set. Shall be greater than 1