# TP Move on Surface

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TP Move on Surface is very similar to TP Object Collision. It's main goal is to guide particles along the surface of a polygon object
On: Activates the Preset. This parameter can be easily animated to switch it on and off as needed
Particle Group: Thinking Particles group that will be used
Surface Object: Polygon Object used to guide the partilces along it's surface
Friction: Amount of friction the particles have with the surface
Align: Enable the alignment of particles along their direction of movement
Alignment Laziness Speed of alignment, the higher the value the longer it takes the particles to get aligned
Example file Movie (QT)
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