Hi Tom,
> - How / Where can I get the exact coordinates of the camera viewpoint I placed manually ?
Use the extended ViewAngleDialog.htm file that Brian linked to above, it's here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=6962.13
The updated version adds camera xyz location controls to the 3D view angles dialog box, which you can access under Options > View > "3D view angles" button.
> - Is it possible to rotate the camera around a specific coordinate (fixed / defined by a point object) ?
With the regular built in view controls MoI will only rotate the camera around the current view target point. But you could rotate it around whatever point you like using your own math calculations, see here for an example: https://academo.org/demos/rotation-about-point/
> - If the viewpoint is infinite (horizon) just type in a very high value for Y ?
Sorry I don't understand this part - you probably don't want to put in a very high value for the camera's y coordinate since that will place your eye point very very far away from your model and with perspective foreshortening your model will be a tiny speck on the screen.
Can you explain in some more detail about what you're trying to do with the horizon?
- Michael
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