apply method Null safety

  1. @override
void apply(
  1. BitmapData bitmapData,
  2. [Rectangle<num>? rectangle]
)
override

Implementation

@override
void apply(BitmapData bitmapData, [Rectangle<num>? rectangle]) {
  final isLittleEndianSystem = env.isLittleEndianSystem;

  final d0 = ((isLittleEndianSystem ? factorR : factorA) * 65536).round();
  final d1 = ((isLittleEndianSystem ? factorG : factorB) * 65536).round();
  final d2 = ((isLittleEndianSystem ? factorB : factorG) * 65536).round();
  final d3 = ((isLittleEndianSystem ? factorA : factorR) * 65536).round();

  final renderTextureQuad = rectangle == null
      ? bitmapData.renderTextureQuad
      : bitmapData.renderTextureQuad.cut(rectangle);

  final imageData = renderTextureQuad.getImageData();
  final List<int> data = imageData.data;

  for (var index = 0; index <= data.length - 4; index += 4) {
    final c0 = data[index + 0];
    final c1 = data[index + 1];
    final c2 = data[index + 2];
    final c3 = data[index + 3];
    data[index + 0] = ((d0 * c0) | 0) >> 16;
    data[index + 1] = ((d1 * c1) | 0) >> 16;
    data[index + 2] = ((d2 * c2) | 0) >> 16;
    data[index + 3] = ((d3 * c3) | 0) >> 16;
  }

  renderTextureQuad.putImageData(imageData);
}