operator [] method

Implementation

@override
FromProperty? operator [](int index) {
  if (index < 0 || index >= length) {
    throw RangeError.index(index, this, 'index');
  }
  final buffer = SpineBindings.bindings.spine_array_from_property_buffer(nativePtr.cast());
  if (buffer[index].address == 0) return null;
  final rtti = SpineBindings.bindings.spine_from_property_get_rtti(buffer[index]);
  final className = SpineBindings.bindings.spine_rtti_get_class_name(rtti).cast<Utf8>().toDartString();
  switch (className) {
    case 'FromRotate':
      final castedPtr = SpineBindings.bindings.spine_from_property_cast_to_from_rotate(buffer[index]);
      return FromRotate.fromPointer(castedPtr);
    case 'FromScaleX':
      final castedPtr = SpineBindings.bindings.spine_from_property_cast_to_from_scale_x(buffer[index]);
      return FromScaleX.fromPointer(castedPtr);
    case 'FromScaleY':
      final castedPtr = SpineBindings.bindings.spine_from_property_cast_to_from_scale_y(buffer[index]);
      return FromScaleY.fromPointer(castedPtr);
    case 'FromShearY':
      final castedPtr = SpineBindings.bindings.spine_from_property_cast_to_from_shear_y(buffer[index]);
      return FromShearY.fromPointer(castedPtr);
    case 'FromX':
      final castedPtr = SpineBindings.bindings.spine_from_property_cast_to_from_x(buffer[index]);
      return FromX.fromPointer(castedPtr);
    case 'FromY':
      final castedPtr = SpineBindings.bindings.spine_from_property_cast_to_from_y(buffer[index]);
      return FromY.fromPointer(castedPtr);
    default:
      throw UnsupportedError('Unknown concrete type: $className for abstract class FromProperty');
  }
}