particle texture
I used a texture to influence density, lifetime and size of the particles
you can download the blend file here
See also:
particle density volumetric material
keyed particles
Texture forcefield experiment 7 - hair particles
Texture forcefield experiment 6 - colored clouds
Texture forcefield experiment 5 - stucci curl
keyed particles
Texture forcefield experiment 7 - hair particles
Texture forcefield experiment 6 - colored clouds
Texture forcefield experiment 5 - stucci curl