How to limite camera zoom In/Out

Jul 18, 2014 at 10:24 AM
I'm trying to visualize a mesh using Helix 3D, it works fine, the only problem i got is how to limite the HelixViewport3D camera zoom. In fact, sometimes my model disappear when i zoom in or out.

Before Zoom :
Image

After Zoom
Image

Any idea how can i solve that issue
Regards,
Jul 18, 2014 at 6:54 PM
Have you tried PerspectiveCamera instead of Orthographic one?