For applying friction proportional to the particle's current velocity. 更多...
| import 语句： | import QtQuick.Particles 2.2 |
| 继承： | Affector |
| factor : real |
A drag will be applied to moving objects which is this factor of their current velocity.
| threshold : real |
The drag will only be applied to objects with a velocity above the threshold velocity. The drag applied will bring objects down to the threshold velocity, but no further.
The default threshold is 0
