crop method

  1. @override
LuminanceSource crop(
  1. int left,
  2. int top,
  3. int width,
  4. int height,
)
override

Returns a new object with cropped image data. Implementations may keep a reference to the original data rather than a copy. Only callable if isCropSupported() is true.

@param left The left coordinate, which must be in [0,getWidth()) @param top The top coordinate, which must be in [0,getHeight()) @param width The width of the rectangle to crop. @param height The height of the rectangle to crop. @return A cropped version of this object.

Implementation

@override
LuminanceSource crop(int left, int top, int width, int height) =>
    RGBLuminanceSource._(
      _luminances,
      _dataWidth,
      _dataHeight,
      _left + left,
      _top + top,
      width,
      height,
    );