How can I shorten Vector3 without changing it's direction?-CodePudding

I need to make an object to follow mouse position, but object is supposed to be closer to the camera.

I tried to normalize rayCastHit Vector and then multiply it. Another thing I did was just dividing rayCastHit Vector by some num. Neither of the methods worked.

Vector3 vector = new Vector3(1, 2, 3);
Vector3 vector1 = new Vector3(1, 4, 5);
Gizmos.color = Color.red;
Gizmos.DrawLine(vector1, vector.normalized);

Gizmos.color = Color.green;
Gizmos.DrawLine(vector1, vector.normalized  * 2);

CodePudding user response：

Gizmos.DrawLine requires a start and end position!

You seem to be passing in a start position and a direction.

Either do

Gizmos.DrawLine(vector1, vector1   vector.normalized * 2);

Or rather use Gizmos.DrawRay instead which takes a start position and a direction

Gizmos.DrawRay(vector1, vector.normalized * 2);

Or in case the vector actually is an end position you rather want to do

Gizmos.DrawLine(vector1, vector1   (vector - vector1).normalized * 2);

Or accordingly

Gizmos.DrawRay(vector1, (vector - vector1).normalized * 2);