RaycastHit.point moves by itself

Questions & Answers
1

Hi! I’m trying to do a simple thing: do a Raycast from one object to another and register the hit position by placing a little red sphere “redDot” there. But for some reason my sphere moves infinitely from the hit position to raycast origin. Here’s my code:

	public GameObject redDot; // red sphere
	private Ray dwn;
	void Start ()
	{
		dwn = new Ray (transform.position, Vector3.down);
	}
		void Update ()
	{
		RaycastHit hit;
		if (Physics.Raycast (dwn, out hit))
			redDot.transform.position = hit.point;
		Debug.Log (hit.point);
	}
`

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2

Turn the collider off on your red sphere. My guess is that the first hit is on the surface, so you place the sphere, the second hit is on the surface of the sphere, which moves the sphere back, the third hit is on the sphere, which moves it back, etc.