How to zoom in on an object in QML?

Question

3D

The task is to make a 3dviewer using QML. I figured out how to open a 3d model, set up the light, scene, but I don’t understand how to zoom in and out of the camera from the model.
For example, to change the position of the camera vertically and horizontally, the following parameters are used: panAboutViewCenter , tiltAboutViewCenter . But, for the approximation did not find anything.
Perhaps someone has done something similar and knows how to implement this functionality?

Answer 1

Although, I think I already found the answer. Zooming occurs when the fieldOfView
parameter changes . The documentation says that this is a change in the camera's viewing angle, but this option suits me. If there are better options, please correct me. Thanks!)

Answer 2

You also have a position property.
Position actually moves the camera (viewer) to the object. fieldOfView is if you hold binoculars to your eyes and change the lens with a different viewing angle. The effects are similar. What you need - decide for yourself. For example, in a hall, a camera that does not move, but only changes the viewing angle, of course, there is a feeling of collision with an object.
The difference will be during the rotation of the camera, because. the axis of rotation is at position.