常力

参考

Force force field visualization.

The Force field is the simplest of the fields. It gives a constant force towards(positive strength) or away from (negative strength) the object's origin.Newtonian particles are attracted to a field with negative strength,and are blown away from a field with positive strength.

对于 群体 具有正强度的场可以用作 目标 ，具有负强度的场可以用作 目标 。无论是类鸟群寻求或飞球/大鳄依赖于物理的群体的设置。

Example