toJson method
Implementation
Map<String, dynamic> toJson() {
return {
'x': x,
'y': y,
if (radiusX != null) 'radiusX': radiusX,
if (radiusY != null) 'radiusY': radiusY,
if (rotationAngle != null) 'rotationAngle': rotationAngle,
if (force != null) 'force': force,
if (tangentialPressure != null) 'tangentialPressure': tangentialPressure,
if (tiltX != null) 'tiltX': tiltX,
if (tiltY != null) 'tiltY': tiltY,
if (twist != null) 'twist': twist,
if (id != null) 'id': id,
};
}