public void CleanUpNativeData(IntPtr native_data)
{
var representation = new BodyParametersRepresentation();
Marshal.PtrToStructure(native_data, representation);
for (int i = 0; i < representation.geopotential_size; ++i)
{
Marshal.DestroyStructure(
representation.geopotential.At(
i * Marshal.SizeOf(typeof(BodyGeopotentialElement))),
typeof(BodyGeopotentialElement));
}
Marshal.FreeHGlobal(representation.geopotential);
Marshal.FreeHGlobal(native_data);
}
public IntPtr MarshalManagedToNative(object managed_object)
{
var parameters = managed_object as BodyParameters;
Debug.Assert(parameters != null, nameof(parameters) + " != null");
var representation = new BodyParametersRepresentation {
angular_frequency = parameters.angular_frequency,
axis_declination = parameters.axis_declination,
axis_right_ascension = parameters.axis_right_ascension,
gravitational_parameter = parameters.gravitational_parameter,
j2 = parameters.j2,
max_radius = parameters.max_radius,
mean_radius = parameters.mean_radius,
min_radius = parameters.min_radius,
name = parameters.name,
reference_angle = parameters.reference_angle,
reference_instant = parameters.reference_instant,
reference_radius = parameters.reference_radius,
geopotential_size = parameters.geopotential?.Length ?? 0
};
if (representation.geopotential_size == 0)
{
representation.geopotential = IntPtr.Zero;
}
else
{
int sizeof_element = Marshal.SizeOf(typeof(BodyGeopotentialElement));
representation.geopotential = Marshal.AllocHGlobal(
sizeof_element * parameters.geopotential.Length);
for (int i = 0; i < parameters.geopotential.Length; ++i)
{
Marshal.StructureToPtr(
parameters.geopotential[i],
representation.geopotential.At(i * sizeof_element),
fDeleteOld: false);
}
}
IntPtr buffer = Marshal.AllocHGlobal(Marshal.SizeOf(representation));
Marshal.StructureToPtr(representation, buffer, fDeleteOld: false);
return(buffer);
}
