PointModel constructor
Implementation
PointModel({
  this.drawOrder = 1,
  this.altitudeMode = 'relativeToGround',
  required this.lat,
  required this.lng,
  required this.altitude,
});
PointModel({
  this.drawOrder = 1,
  this.altitudeMode = 'relativeToGround',
  required this.lat,
  required this.lng,
  required this.altitude,
});