title: How to find a point X between two Vector3 in Unity3d
body: <p>OK, it's not easy explain me so i will use an image.</p>
  
  <p>I have the following problem :</p>
  
  <h2>I have a line between two points A and B. I need to calculate the coordinates of the 'X' point knowing that it is perpendicular to the point C.</h2>
  
  <p><a href="https://i.stack.imgur.com/zTG8w.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zTG8w.jpg" alt="Editor situation"></a></p>