TornPainterBackground constructor

TornPainterBackground(Path path, double width, double height, Color backgroundColor, bool hasNoise, Color noiseColor, bool hasShadow, Offset shadowOffset, Color shadowColor,)

Constuctor of the TornPainterBackground

Implementation

TornPainterBackground(
  this.path,
  this.width,
  this.height,
  Color backgroundColor,
  this.hasNoise,
  this.noiseColor,
  this.hasShadow,
  Offset shadowOffset,
  this.shadowColor,
) {
  shiftedPath = path.shift(shadowOffset);
  paintBackground = Paint()
    ..color = backgroundColor
    ..style = PaintingStyle.fill;

  if (hasNoise) {
    final List<List<double>> noise = noise2(width.toInt(), height.toInt(),
        noiseType: NoiseType.Perlin,
        octaves: 5,
        frequency: 0.75,
        cellularDistanceFunction: CellularDistanceFunction.Euclidean,
        cellularReturnType: CellularReturnType.CellValue);

    for (var x = 0; x < width; x++) {
      for (var y = 0; y < height; y++) {
        // var c = (0x80 + 0x80 * noise[x][y]).floor(); // grayscale
        final offset = Offset(x.toDouble(), y.toDouble());
        if (!path.contains(offset)) {
          continue;
        }
        final color = Color.fromRGBO(
            noiseColor.red, noiseColor.green, noiseColor.blue, noise[x][y]);
        noisePoints.putIfAbsent(color, () => []);
        noisePoints[color]!.add(offset);
      }
    }
  }
}