com.luciad.imaging.operator.util

LuciadLightspeedClass TLcdColorLookupTable.Builder<B extends TLcdColorLookupTable.Builder<B>>

java.lang.Object

com.luciad.imaging.operator.util.TLcdColorLookupTable.Builder<B>

Enclosing class:

TLcdColorLookupTable

public static class TLcdColorLookupTable.Builder<B extends TLcdColorLookupTable.Builder<B>>
extends Object

Builder for color lookup tables. The default table is 2x2x2 pixels with 8-bit color components, uses linear interpolation and multiplies the opacity from the input and lookup table color for the final result. The actual filter must be specified as either a ColorFilter or a pixel buffer.

For example to create a grey-scale filter:

   TLcdColorLookupTable table = TLcdColorLookupTable.newBuilder().
     filter(
       new ILcdColorFilter() {
         public void apply( float[] aRGBColorSFCT ) {
           float lum = 0.2126f * aRGBColorSFCT[ 0 ] + 0.7152f * aRGBColorSFCT[ 1 ] + 0.0722f * aRGBColorSFCT[ 2 ];
           aRGBColorSFCT[ 0 ] = aRGBColorSFCT[ 1 ] = aRGBColorSFCT[ 2 ] = lum;
         }
       }
     ).
     build();
 

Method Summary

Modifier and Type	Method and Description
B	alphaMode(TLcdColorLookupTable.AlphaMode aAlphaMode) Sets the mode use for the alpha channel.
TLcdColorLookupTable	build() Builds the color lookup table.
B	componentType(TLcdLookupTable.ComponentType aComponentType) Sets the type of the table's color components.
B	filter(Buffer aPixelData) Sets the table's entries directly from a buffer.
B	filter(ILcdColorFilter aColorFilter) Sets the table's entries from a color filter.
B	interpolation(ELcdInterpolationType aInterpolationType) Sets the interpolation type between table pixels.
B	size(int aWidth, int aHeight, int aDepth) Sets the size of the table.

Methods inherited from class java.lang.Object

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

Method Detail

size

public B size(int aWidth,
              int aHeight,
              int aDepth)

Sets the size of the table.

Note that the size of the lookup table should be chosen carefully to avoid high memory usage and performance problems. Some typical sizes are:

• 2x2x2 for a linear filter
• 16x16x16 for a non-linear filter
• 256x1x1 for a filter that only changes the red color channel

Parameters:

aWidth - the width of the table

aHeight - the height of the table

aDepth - the depth of the table

Returns:

this builder

componentType

public B componentType(TLcdLookupTable.ComponentType aComponentType)

Sets the type of the table's color components.

Typically a byte provides sufficient accuracy for rendering.

Parameters:

aComponentType - the component type

Returns:

this builder

interpolation

public B interpolation(ELcdInterpolationType aInterpolationType)

Sets the interpolation type between table pixels. Note that only NONE and LINEAR are currently supported.

Parameters:

aInterpolationType - the interpolation type

Returns:

this builder

alphaMode

public B alphaMode(TLcdColorLookupTable.AlphaMode aAlphaMode)

Sets the mode use for the alpha channel.

Parameters:

aAlphaMode - the alpha mode

Returns:

this builder

filter

public B filter(ILcdColorFilter aColorFilter)

Sets the table's entries from a color filter.

Parameters:

aColorFilter - the color filter

Returns:

this builder

filter

public B filter(Buffer aPixelData)

Sets the table's entries directly from a buffer.

The buffer should contain the appropriate number of bytes according to the table size and component type. Each table entry has 4 components. See TLcdColorLookupTable and TLcdLookupTable for details.

Parameters:

aPixelData - the pixel buffer

Returns:

this builder

build

public TLcdColorLookupTable build()

Builds the color lookup table.

Returns:

the color lookup table