SDK Question planet or moon oapi?

[fred18]

Hi all,

I looked in the api docs but couldn't find any api that tells automatically if the reference planet is an actual planet or a moon of another planet.

I'll see if there is a way to find it out anyway, but it could be a good to have.


Fred

 

[Enjo]

I don't know anything like that from oapi, but author of TransX, Duncans wrote original version of the following code:
https://sourceforge.net/p/enjomitchsorbit/codeHG/ci/default/tree/TransX/src/BodyProvider.cpp#l66

The basic idea is that the orbiting body has a smaller distance to the major body than to other bodies, and that's the only way to detect it.

 

[Face]

I looked in the api docs but couldn't find any api that tells automatically if the reference planet is an actual planet or a moon of another planet.

In OMP, I ended up parsing the solar system configuration file.

 

[fred18]

Thanks guys,

I just did this, it works!

bool RadioProc::IsMoon(OBJHANDLE hplanet)
{
	CELBODY *cb;
	cb=oapiGetCelbodyInterface(hplanet);
	int Version=cb->Version();
	if(Version==2)
	{
		OBJHANDLE h_sun=((CELBODY2*)cb)->GetParent();
		CELBODY *cbsun;
		cbsun=oapiGetCelbodyInterface(h_sun);
		int Version_sun=cbsun->Version();
		if(Version_sun==2)
		{
			OBJHANDLE h_null=((CELBODY2*)cbsun)->GetParent();
			if(h_null!=NULL)
			{
				return TRUE;
			}
		}
	}
	return FALSE;
}