What is Repel Geometry
After adding an extra attribute on regular mesh object, this geometry mesh will become repel geometry. And there are 2 mode of repel, ouside and inside.
Usage
We need firstly mark this object repel geometry.
Adding attribute
Repel outside
When the auto repel distance is 1 (greater than 0), the agents will keep ouside of repel mesh and never penetrate inside of it.
keep outside
Repel inside
When the auto repel distance is -1 (less than 0), the agents will keep inside of repel mesh and never penetrate out from it.
keep inside