Growth fiber heart
1. scatter a sphere
2. draw a heart curve as path
3. choose seed points
4. every frame get seed's neighbors points in solver node .
5. calculate points velocity. (neighbor points - seed)
6. bring velocity to PopDopnet drive particle
7. convert particle as curve by id attribute (also you can convert volumetrail)
8. set silver material
Paper : Jack's Frost: Controllable Magic Frost Simulations for 'Rise of the Guardians'