Arcs

The Principle of Arcs  in animation is based of the fact that most  actions in real life occur in arcs as gravity causes objects in motion to arc between the start and end points.

Adding arcs to movements in animations will make the movements more fluid and realistic as can be seen in the image below from Dante Rinaldi’s posts on the animation principles 

arcs03

The shallower the arc the faster the object’s movement will appear  the more pronounced the arc, the slower the object will appear to move.

This can be seen in this GIF of Toothless from Dreamworks’ How to Train Your Dragon where Toothless seems to slow down after coming through the clouds as the arc gets more pronounced.

tumblr_mcmjmxkxt01qeeuo4o1_r1_500

Dreamworks – How to Train Your  Dragon (2010)

 

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