NAN and mantra

[Guest xionmark]

Hello,

I'm getting NAN complaints from mantra even though I'm clamping the values in question to the standard C++ numeric limits. Is there a different limit I should be using in the HDK?

The message from mantra:

mantra: Geometry undefined contains NANs

This is how I'm trying to clamp the velocity being passed to mantra, seems fine to me:

		 SYSclamp(v[0], std::numeric_limits<float>::min(), std::numeric_limits<float>::max());
		 SYSclamp(v[1], std::numeric_limits<float>::min(), std::numeric_limits<float>::max());
		 SYSclamp(v[2], std::numeric_limits<float>::min(), std::numeric_limits<float>::max());

Many thanks!

Edited December 3, 2012 by xionmark

[edward]

How do you know it's the velocity? Perhaps it's somewhere else in the geometry like P?

[Guest xionmark]

Hi Edward,

It did affect P as well, but there was a common variable used in calculating both v and P. Once I identified the questionable var I quickly located the error; there was a condition that would set this variable to 0, and thus subsequent calculations generated NAN's. (!)

As often is the case one needs to step away from the computer for the answer to arrive ... :-)

--Mark