mz11

Imagine if you filmed a match head burning close up, then comped it on to an image of a building. It would look pretty silly, right? That's what I'm looking at. Surely someone here has had to create pyro fx on a large scale object and has some tips.

If I apply pyro FX flames to a box, the flames appear to be burning on a relatively small object. But what if that box is meant to be the size of a skyscraper? Scaling the box up by thousands of units prior to creating the pyro flames does not work.

Any tips on the best parms to change the global scale of the pyro effect, to appear that flames are burning on a giant object?

edward

It's like a cached cloth sim writes out empty velocity vectors by default.

Oops, posted too late. In that case, have you examined the value of the cached out velocity vectors? Perhaps they're too small and just need to be multiplied into some larger range for your camera parameters?

Well, I followed your tip and looked at the velocity values in the non-trail-sop cache (straight out of the dop import), and sure enough they are all zeroes!