Dot Product of two vectors.
The dot product is a float value equal to the magnitudes of the two vectors multiplied together
and then multiplied by the cosine of the angle between them.
For normalized vectors Dot returns 1 if they point in exactly the same direction,
-1 if they point in completely opposite directions and zero if the vectors are perpendicular.
// detects if other transform is behind this object
using UnityEngine; using System.Collections;
public class ExampleClass : MonoBehaviour { public Transform other;
void Update() { if (other) { Vector3 forward = transform.TransformDirection(Vector3.forward); Vector3 toOther = other.position - transform.position;
if (Vector3.Dot(forward, toOther) < 0) { print("The other transform is behind me!"); } } } }
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