08-17-2016, 11:29 AM
Yes, that was what I was doing... 
The problem I'm having is that the bounding of the vdb is different to the fumefx grid, applying the transform to the vdb gives me the approximate location, but is still offset, because of the different bounding box sizes. I need to work out what that extra offset would be.
Here's what I mean. Is there any formula for working this out? Also the bounding box is going to change size over time.
Both are translated 663.558 units in Z
![[Image: fume_vdb2.jpg]](https://s3.postimg.org/punldu9r7/fume_vdb2.jpg)
The problem I'm having is that the bounding of the vdb is different to the fumefx grid, applying the transform to the vdb gives me the approximate location, but is still offset, because of the different bounding box sizes. I need to work out what that extra offset would be.
Here's what I mean. Is there any formula for working this out? Also the bounding box is going to change size over time.
Both are translated 663.558 units in Z