fixedRotationAngle property

int get fixedRotationAngle

Implementation

int get fixedRotationAngle => _fixedRotationAngle;

set fixedRotationAngle (int v)

Implementation

set fixedRotationAngle(int v) {
  //只支持 0，90，180， 270, 360
  const support = [-270, -180, -90, 0, 90, 180, 270];
  if (!support.contains(v)) {
    print('不在支持的角度数据当中');
    return;
  }
  var ret = v;
  if (v <= -270) {
    ret = 90;
  } else if (v >= 270) {
    ret = -90;
  }

  //实际最后结果只有 -180, -90, 0, 90, 180
  _fixedRotationAngle = ret;
}