public final class InvertedLuminanceSource extends LuminanceSource
LuminanceSource which inverts the luminances it returns -- black becomes
white and vice versa, and each value becomes (255-value).| Constructor and Description |
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InvertedLuminanceSource(LuminanceSource delegate) |
| Modifier and Type | Method and Description |
|---|---|
LuminanceSource |
crop(int left,
int top,
int width,
int height)
Returns a new object with cropped image data.
|
byte[] |
getMatrix()
Fetches luminance data for the underlying bitmap.
|
byte[] |
getRow(int y,
byte[] row)
Fetches one row of luminance data from the underlying platform's bitmap.
|
LuminanceSource |
invert() |
boolean |
isCropSupported() |
boolean |
isRotateSupported() |
LuminanceSource |
rotateCounterClockwise()
Returns a new object with rotated image data by 90 degrees counterclockwise.
|
LuminanceSource |
rotateCounterClockwise45()
Returns a new object with rotated image data by 45 degrees counterclockwise.
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getHeight, getWidth, toStringpublic InvertedLuminanceSource(LuminanceSource delegate)
public byte[] getRow(int y,
byte[] row)
LuminanceSourcegetRow in class LuminanceSourcey - The row to fetch, which must be in [0,getHeight())row - An optional preallocated array. If null or too small, it will be ignored.
Always use the returned object, and ignore the .length of the array.public byte[] getMatrix()
LuminanceSourceint luminance = array[y * width + x] & 0xffgetMatrix in class LuminanceSourcepublic boolean isCropSupported()
isCropSupported in class LuminanceSourcepublic LuminanceSource crop(int left, int top, int width, int height)
LuminanceSourcecrop in class LuminanceSourceleft - The left coordinate, which must be in [0,getWidth())top - The top coordinate, which must be in [0,getHeight())width - The width of the rectangle to crop.height - The height of the rectangle to crop.public boolean isRotateSupported()
isRotateSupported in class LuminanceSourcepublic LuminanceSource invert()
invert in class LuminanceSourceLuminanceSource since invert undoes itselfpublic LuminanceSource rotateCounterClockwise()
LuminanceSourceLuminanceSource.isRotateSupported() is true.rotateCounterClockwise in class LuminanceSourcepublic LuminanceSource rotateCounterClockwise45()
LuminanceSourceLuminanceSource.isRotateSupported() is true.rotateCounterClockwise45 in class LuminanceSourceCopyright © 2007–2019. All rights reserved.