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ContactPoint.normal

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public var normal: Vector3;
public Vector3 normal;

Description

Normal of the contact point.

	// Print how many points are colliding this transform 
	// And print the first point normal that is colliding.
	function OnCollisionEnter(other : Collision) {
	 	print("Points colliding: " + other.contacts.Length);
		print("First normal of the point that collide: " + other.contacts[0].normal);
	}
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void OnCollisionEnter(Collision other) { print("Points colliding: " + other.contacts.Length); print("First normal of the point that collide: " + other.contacts[0].normal); } }