User Guide: AFX Force System
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AFX Force System
The force system is a new and still highly experimental part of AFX. It evolved from a fireworks prototyping project and it's a mechanism for moving AFX effects in a force-driven, physics-like manner.
The force system introduces force-effects which are like other AFX effects in the way they are added to a choreographer, but unlike other effects, they don't do anything directly. Instead, multiple force-effects are grouped together in force-sets, each simulating a closed universe of forces. Then other non-force effects can be configured to react to the forces in a particular force-set using a special force transform modifier.
For example, consider a typical fireworks explosion. When a fireworks shell explodes, it scatters a cluster of burning particles called stars. The movement behavior of each star can be approximated reasonably well by subjecting them to the forces of gravity and drag.
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