The atan2() function calculates the angle between two positions. The angle it calculates can be used to rotate a shape toward something. In this example, the eyes rotate to look at the cursor.
関連する実例
A point on the unit circle, together with the corresponding sine and cosine values on their graphs.
Sine and Cosine
Animate circular, back and forth, and wave motion.
Two eyes on a black background.
Aim
Rotate toward a point.
Rainbow ring made up of triangles whose vertices lie on two concentric circles.
Triangle Strip
Split a ring into triangles.