java.lang.Object
- com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShading
- - com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShadingType4
  - - com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShadingType6

All Implemented Interfaces:

COSObjectable
```
public class PDShadingType6
extends PDShadingType4
```
Resources for a shading type 6 (Coons Patch Mesh).

Field Summary
- Fields inherited from class com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShading
  SHADING_TYPE1, SHADING_TYPE2, SHADING_TYPE3, SHADING_TYPE4, SHADING_TYPE5, SHADING_TYPE6, SHADING_TYPE7

Constructor Summary

Constructors
Constructor Description

PDShadingType6(COSDictionary shadingDictionary)
Constructor using the given shading dictionary.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected com.tom_roush.pdfbox.pdmodel.graphics.shading.Patch`	`generatePatch(PointF[] points, float[][] color)`
`int`	`getBitsPerComponent()`	The bits per component of this shading.
`int`	`getBitsPerCoordinate()`	The bits per coordinate of this shading.
`RectF`	`getBounds(AffineTransform xform, Matrix matrix)`	Calculate a bounding rectangle around the areas of this shading context.
`PDRange`	`getDecodeForParameter(int paramNum)`	Get the decode for the input parameter.
`int`	`getNumberOfColorComponents()`	The number of color components of this shading.
`int`	`getShadingType()`	This will return the shading type.
`protected float`	`interpolate(float src, long srcMax, float dstMin, float dstMax)`	Calculate the interpolation, see p.345 pdf spec 1.7.
`protected com.tom_roush.pdfbox.pdmodel.graphics.shading.Patch`	`readPatch(ImageInputStream input, boolean isFree, PointF[] implicitEdge, float[][] implicitCornerColor, long maxSrcCoord, long maxSrcColor, PDRange rangeX, PDRange rangeY, PDRange[] colRange, Matrix matrix, AffineTransform xform, int controlPoints)`	Read a single patch from a data stream, a patch contains information of its coordinates and color parameters.
`protected com.tom_roush.pdfbox.pdmodel.graphics.shading.Vertex`	`readVertex(ImageInputStream input, long maxSrcCoord, long maxSrcColor, PDRange rangeX, PDRange rangeY, PDRange[] colRangeTab, Matrix matrix, AffineTransform xform)`	Read a vertex from the bit input stream performs interpolations.
`void`	`setBitsPerComponent(int bitsPerComponent)`	Set the number of bits per component.
`void`	`setBitsPerCoordinate(int bitsPerCoordinate)`	Set the number of bits per coordinate.
`void`	`setDecodeValues(COSArray decodeValues)`	This will set the decode values.

Methods inherited from class com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShadingType4
getBitsPerFlag, setBitsPerFlag

Methods inherited from class com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShading
create, evalFunction, evalFunction, getAntiAlias, getBackground, getBBox, getColorSpace, getCOSObject, getFunction, getType, setAntiAlias, setBackground, setBBox, setColorSpace, setFunction, setFunction, setShadingType

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- PDShadingType6
```
public PDShadingType6(COSDictionary shadingDictionary)
```
  Constructor using the given shading dictionary.
  
  Parameters:
  
  shadingDictionary - the dictionary for this shading

Method Detail

getShadingType
```
public int getShadingType()
```
Description copied from class: PDShading

This will return the shading type.

Overrides:

getShadingType in class PDShadingType4

Returns:

the shading typ

generatePatch

protected com.tom_roush.pdfbox.pdmodel.graphics.shading.Patch generatePatch(PointF[] points,
                                                                            float[][] color)

getBounds
```
public RectF getBounds(AffineTransform xform,
                       Matrix matrix)
                throws IOException
```
Description copied from class: PDShading

Calculate a bounding rectangle around the areas of this shading context.

Returns:

Bounding rectangle or null, if not supported by this shading type.

Throws:

IOException

readPatch

protected com.tom_roush.pdfbox.pdmodel.graphics.shading.Patch readPatch(ImageInputStream input,
                                                                        boolean isFree,
                                                                        PointF[] implicitEdge,
                                                                        float[][] implicitCornerColor,
                                                                        long maxSrcCoord,
                                                                        long maxSrcColor,
                                                                        PDRange rangeX,
                                                                        PDRange rangeY,
                                                                        PDRange[] colRange,
                                                                        Matrix matrix,
                                                                        AffineTransform xform,
                                                                        int controlPoints)
                                                                 throws IOException

Read a single patch from a data stream, a patch contains information of its coordinates and color parameters.

Parameters:: input - the image source data stream; isFree - whether this is a free patch; implicitEdge - implicit edge when a patch is not free, otherwise it's not used; implicitCornerColor - implicit colors when a patch is not free, otherwise it's not used; maxSrcCoord - the maximum coordinate value calculated from source data; maxSrcColor - the maximum color value calculated from source data; rangeX - range for coordinate x; rangeY - range for coordinate y; colRange - range for color; matrix - the pattern matrix concatenated with that of the parent content stream; xform - transformation for user to device space; controlPoints - number of control points, 12 for type 6 shading and 16 for type 7 shading
Returns:: a single patch
Throws:: IOException - when something went wrong

getBitsPerComponent
```
public int getBitsPerComponent()
```
The bits per component of this shading. This will return -1 if one has not been set.

Returns:

the number of bits per component

setBitsPerComponent
```
public void setBitsPerComponent(int bitsPerComponent)
```
Set the number of bits per component.

Parameters:

bitsPerComponent - the number of bits per component

getBitsPerCoordinate
```
public int getBitsPerCoordinate()
```
The bits per coordinate of this shading. This will return -1 if one has not been set.

Returns:

the number of bits per coordinate

setBitsPerCoordinate
```
public void setBitsPerCoordinate(int bitsPerCoordinate)
```
Set the number of bits per coordinate.

Parameters:

bitsPerCoordinate - the number of bits per coordinate

getNumberOfColorComponents
```
public int getNumberOfColorComponents()
                               throws IOException
```
The number of color components of this shading.

Returns:

number of color components of this shading

Throws:

IOException

setDecodeValues
```
public void setDecodeValues(COSArray decodeValues)
```
This will set the decode values.

Parameters:

decodeValues - the new decode values

getDecodeForParameter
```
public PDRange getDecodeForParameter(int paramNum)
```
Get the decode for the input parameter.

Parameters:

paramNum - the function parameter number

Returns:

the decode parameter range or null if none is set

interpolate
```
protected float interpolate(float src,
                            long srcMax,
                            float dstMin,
                            float dstMax)
```
Calculate the interpolation, see p.345 pdf spec 1.7.

Parameters:

src - src value

srcMax - max src value (2^bits-1)

dstMin - min dst value

dstMax - max dst value

Returns:

interpolated value

readVertex

protected com.tom_roush.pdfbox.pdmodel.graphics.shading.Vertex readVertex(ImageInputStream input,
                                                                          long maxSrcCoord,
                                                                          long maxSrcColor,
                                                                          PDRange rangeX,
                                                                          PDRange rangeY,
                                                                          PDRange[] colRangeTab,
                                                                          Matrix matrix,
                                                                          AffineTransform xform)
                                                                   throws IOException

Read a vertex from the bit input stream performs interpolations.

Parameters:: input - bit input stream; maxSrcCoord - max value for source coordinate (2^bits-1); maxSrcColor - max value for source color (2^bits-1); rangeX - dest range for X; rangeY - dest range for Y; colRangeTab - dest range array for colors; matrix - the pattern matrix concatenated with that of the parent content stream
Returns:: a new vertex with the flag and the interpolated values
Throws:: IOException - if something went wrong

Class PDShadingType6

Field Summary

Fields inherited from class com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShading

Constructor Summary

Method Summary

Methods inherited from class com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShadingType4

Methods inherited from class com.tom_roush.pdfbox.pdmodel.graphics.shading.PDShading

Methods inherited from class java.lang.Object

Constructor Detail

PDShadingType6

Method Detail

getShadingType

generatePatch

getBounds

readPatch

getBitsPerComponent

setBitsPerComponent

getBitsPerCoordinate

setBitsPerCoordinate

getNumberOfColorComponents

setDecodeValues

getDecodeForParameter

interpolate

readVertex