Help With Normal Flipping / Particles

[EffectsPanda_at_large]

I have included the file here. I have been trying to figure out how to fix the normals from flipping. I have used the point sop, and the vector pop nodes and several other methods. But I seem unable to fix the problem. Any help would be appericated. when you play the animation you will notice that the geo stands up on edge then falls back into place

Thanks in advancesnowbreak4.hip

Edited October 14, 2007 by EffectsPanda_at_large

[eyevex]

I have included the file here. I have been trying to figure out how to fix the normals from flipping. I have used the point sop, and the vector pop nodes and several other methods. But I seem unable to fix the problem. Any help would be appericated. when you play the animation you will notice that the geo stands up on edge then falls back into place

Use precalculate normal on the facet sop in the snow geo. This way the up direction is defined when it feeds to the popnet.