Class BrightnessContrastFilter
- All Implemented Interfaces:
ImageConsumer
,Cloneable
For brightness, the valid range is -2.0,..,0.0,..,2.0
.
A value of 0.0
means no change.
Negative values will make the pixels darker.
Maximum negative value (-2
) will make all filtered pixels black.
Positive values will make the pixels brighter.
Maximum positive value (2
) will make all filtered pixels white.
For contrast, the valid range is -1.0,..,0.0,..,1.0
.
A value of 0.0
means no change.
Negative values will reduce contrast.
Maximum negative value (-1
) will make all filtered pixels grey
(no contrast).
Positive values will increase contrast.
Maximum positive value (1
) will make all filtered pixels primary
colors (either black, white, cyan, magenta, yellow, red, blue or green).
- Version:
- $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/image/BrightnessContrastFilter.java#1 $
- Author:
- Harald Kuhr, last modified by $Author: haku $
-
Field Summary
Fields inherited from class java.awt.image.RGBImageFilter
canFilterIndexColorModel, newmodel, origmodel
Fields inherited from class java.awt.image.ImageFilter
consumer
Fields inherited from interface java.awt.image.ImageConsumer
COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT
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Constructor Summary
ConstructorsConstructorDescriptionCreates a BrightnessContrastFilter with default values (brightness=0.3, contrast=0.3
).BrightnessContrastFilter
(float pBrightness, float pContrast) Creates a BrightnessContrastFilter with the given values for brightness and contrast. -
Method Summary
Modifier and TypeMethodDescriptionint
filterRGB
(int pX, int pY, int pARGB) Filters one pixel, adjusting brightness and contrast according to this filter.Methods inherited from class java.awt.image.RGBImageFilter
filterIndexColorModel, filterRGBPixels, setColorModel, setPixels, setPixels, substituteColorModel
Methods inherited from class java.awt.image.ImageFilter
clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setDimensions, setHints, setProperties
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Constructor Details
-
BrightnessContrastFilter
public BrightnessContrastFilter()Creates a BrightnessContrastFilter with default values (brightness=0.3, contrast=0.3
).This will slightly increase both brightness and contrast.
-
BrightnessContrastFilter
public BrightnessContrastFilter(float pBrightness, float pContrast) Creates a BrightnessContrastFilter with the given values for brightness and contrast.For brightness, the valid range is
-2.0,..,0.0,..,2.0
. A value of0.0
means no change. Negative values will make the pixels darker. Maximum negative value (-2
) will make all filtered pixels black. Positive values will make the pixels brighter. Maximum positive value (2
) will make all filtered pixels white.For contrast, the valid range is
-1.0,..,0.0,..,1.0
. A value of0.0
means no change. Negative values will reduce contrast. Maximum negative value (-1
) will make all filtered pixels grey (no contrast). Positive values will increase contrast. Maximum positive value (1
) will make all filtered pixels primary colors (either black, white, cyan, magenta, yellow, red, blue or green).- Parameters:
pBrightness
- adjust the brightness of the image, in the range-2.0,..,0.0,..,2.0
.pContrast
- adjust the contrast of the image, in the range-1.0,..,0.0,..,1.0
.
-
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Method Details
-
filterRGB
public int filterRGB(int pX, int pY, int pARGB) Filters one pixel, adjusting brightness and contrast according to this filter.- Specified by:
filterRGB
in classRGBImageFilter
- Parameters:
pX
- xpY
- ypARGB
- pixel value in default color space- Returns:
- the filtered pixel value in the default color space
-