public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof XYStepAreaRenderer)) {
            return false;
        }
        XYStepAreaRenderer that = (XYStepAreaRenderer) obj;
        if (this.showOutline != that.showOutline) {
            return false;
        }
        if (this.shapesVisible != that.shapesVisible) {
            return false;
        }
        if (this.shapesFilled != that.shapesFilled) {
            return false;
        }
        if (this.plotArea != that.plotArea) {
            return false;
        }
        if (this.rangeBase != that.rangeBase) {
            return false;
        }
        return super.equals(obj);