drawBackgroundArcOfSectors method

void drawBackgroundArcOfSectors(Canvas canvas, Size canvasSize, { Color color = const Color.fromRGBO(128, 128, 128, 1), required List<SectorAttributes> allSectorAttributes, Offset centerOffset = const Offset(0, 0), double assemblyAngle = 175, required double angleArcDegrees, double angleOffset = 0, required double insideHole, required double rayonArc, double backgroundOpacity = 0.1, required Color widgetColorBackground, })

Implementation

void drawBackgroundArcOfSectors(Canvas canvas, Size canvasSize,
    {Color color = const Color.fromRGBO(128, 128, 128, 1),
    required List<SectorAttributes> allSectorAttributes,
    Offset centerOffset = const Offset(0, 0),
    double assemblyAngle = 175,
    required double angleArcDegrees,
    double angleOffset = 0,
    required double insideHole,
    required double rayonArc,
    double backgroundOpacity = 0.1,
    required Color widgetColorBackground}) {
  double angleDebut = ((-angleArcDegrees / 2) + angleOffset);

  final paint = new Paint();
  paint.color = color;

  var center = Offset(canvasSize.width / 2, canvasSize.height / 2);

  // print("&&&&& allSectorAttributes &&&&& " + allSectorAttributes.length.toString());

  int allSectorsSize = 0;

  for (SectorAttributes sector in allSectorAttributes) {
    // print("* sectorSize = " + sector.size.toString());
    allSectorsSize += sector.size;
  }
  // print("allSectorsSize = " + allSectorsSize.toString());

  double arcOffset = 0;
  for (SectorAttributes sector in allSectorAttributes) {
    paint.color = sector.elementColor ?? backgroundColor;
    double sweep = sector.size / allSectorsSize * angleArcDegrees;
    drawAnArc(canvas, paint,
        center: center,
        centerOffset: centerOffset,
        rayonArc: rayonArc,
        startAngleInDegrees:
            angleDebut.degreesToRadians + arcOffset.degreesToRadians,
        sweepAngleInDegrees: sweep.degreesToRadians);
    arcOffset += sweep;
  }

  final paintBackground = new Paint();
  paintBackground.color =
      widgetColorBackground.withOpacity(1 - backgroundOpacity);

  drawAnArc(canvas, paintBackground,
      center: center,
      centerOffset: centerOffset,
      rayonArc: insideHole,
      startAngleInDegrees: angleDebut.degreesToRadians,
      sweepAngleInDegrees: assemblyAngle.degreesToRadians);
}