title: How Matlab calculates the camera view angle?
body: <p>I am using matlab to visualise a scene. In order to zoom in the scene, I can do that by eather:
  - Fix the cameraposition and the cameratarget and change the cameraviewangle.or 
  - Fix the cameratarget and the cameraview angle and moving the camera along the viewing line (defined by the cameraPosition and the cameraTarget).</p>
  
  <p>I know how to set the values of cameraposition CameraTarget and viewangle, but I do not how to define the optimal view angle. In auto mode of cameraviewangle, matlab calculate the smalest view angle that capture all the scene from the specefied camera position. I appreciate any help in understanding this.</p>
  
  <p>Iman</p>