CompuServe Messages

Jeff, PMJI, but your question made me curious myself, and I experimented a *little* with trying to create your desired effect. I assumed you wanted the dust to be swirling tornado-style, besides achieving the other dust storm characteristics. Although the vapor emission can be treated to look similar to a dust cloud, and can be influenced by secondary motion as well, my simple tests which merely rotated the axp cube and moved it toward the camera may not be exactly what you're looking for. The routine lets you use 1 of 3 particle types which are mapped in various ways, and the mapping is critical to the effect. Since these are not really 3D particles like spheres spinning in a force field, rotating the axp is not very convincing for this effect, and when the axp cube envelops the camera as you desired, you may not get the effect you're looking for either. Possibly by using a custom animated opacity map on the vapor particles, you might could get something close, I don't know. Then again, maybe someone else could jump in and offer some better advice on achieving this with Vapor. Otherwise, you might try Blackbox's Vortex routine using larger intersecting plane particles with opacity mapping ? BILL