Houdini - POP Wind vs POP Force
A POP Force is a pushing force – it accelerates particles – each step adds to the particle’s @v.
A POP Wind is a pulling force. If we have this setting:
An attribute is created on the particle called @targetv – in this case {0,2,0}. Over time, the particle will match its own @v to @targetv. This also means that the particle’s @v will never exceed @targetv – as apposed to a POP Force, which keeps adding to @v.
In effect, POP Wind looks like constant movement – vs an accelerating movement created by a POP Force.
