code: private void calcAngleStep() {
          this.angleStep100ft = (2 * Math.PI) / (getMaxValue() - getMinValue());
          this.angleStep1000ft = angleStep100ft / 10.0;
          this.angleStep10000ft = angleStep1000ft / 10.0;
      }
docs: <editor-fold defaultstate="collapsed" desc="Misc">