Zoom in and out

Q&A about the latest versions
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Alain_83740
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Sat Jul 25, 2020 1:40 pm

Hello the forum,

How do you limit the zoom in and out?

Thank you for your help.

Alain
Il vaut mieux un qui sait que cent qui cherchent.
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360Texas
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Sat Jul 25, 2020 5:27 pm

Zoom in out are expressed as Degrees ° or Pixels (FOV) field of view on the image horizon.

Pano2vr 'Viewing Parameters"

We chose Degrees

Min = zoom in or 50° narrow angle of view limit on the horizon

Max = zoom out or 100 ° wider angle of view limit on horizon

Be sure to click [Set] button to lock in the values

This is based on what a human eye normal vision typically can see.
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Dave
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Alain_83740
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Sun Jul 26, 2020 2:30 pm

Hello 360Texas,

When you say, be sure to click "Adjust." So I do exactly what you tell me, but when I click on "Adjust" the value goes back to 100 °.

Thank you for your help.

Alain
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360Texas
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Sun Jul 26, 2020 3:58 pm

In your tour... select an equirectangle panorama image.

Looking at your values... please use zoom in MIN 50°
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Branigan
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Mon Jul 27, 2020 11:16 am

Alain_83740 wrote:
Sat Jul 25, 2020 1:40 pm
Hello the forum,

How do you limit the zoom in and out?

Thank you for your help.

Alain
You'll find this area is a bit... interesting...; assuming you've set your FoV Mode to Diagonal (only if you want your tour to scale correctly(ish) on Mobiles and Desktops in both Portrait and Landscape modes)

First you'll find that when you make the change from the default FoV mode of Vertical (because everyone is only ever working on mobiles in Portrait mode....?) to Diagonal, then all the FoV values you previously used will now look wrong. You'll need to adjust them upwards. So an FoV of 90 might need to be about 100 to look the same (varies on each device of course). Also your Hotspot sizes will change.

You'll find the FoV Min Max limits cause other problems. You can have 90 as your default FoV, but if you put say, 80 and 100 in the Limits: you will not only find you can't zoom in one direction or the other, but your default FoV is not looking like what you set it to (90). You're actually being locked by the FoV Min Max limits which overrides your Default FoV at one end or the other (depends on Portrait or Landcape mode viewing). You'll have to put in much wider limits to first 'unlock' your original FoV, then adjust further to get the Zoom range you want; which will bear only a passing resemblance to the values you put in.

You might find either limit only has to be a few degrees larger/smaller than your Default FoV, but will still give you quite a large range. Adjusting by single degrees can make quite a difference.

It seems like the Default FoV is adjusted by an internal scaling factor according to the FoV Mode (Vertical, Horizontal, Diagonal) ; but the FoV Min Max limits are apparently not adjusted (or adjusted differently?) and so they clash.

It also means you get slightly different results for the same FoV Min Max limits on Desktop and Mobiles, where the "scaling factor" is going to be different in Landscape and Portrait modes. So on one you could have a long Zoom In range, but a small Zoom Out range and on the other: vice versa with the same FoV Min Max values. :?

Hotspot images will change size, so there's that to deal with too. They need to be made larger.
Alain_83740
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Joined: Mon Feb 10, 2020 3:36 pm
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Mon Jul 27, 2020 6:12 pm

Thanks for your advice Branigan,

I'm new to Pano2VR and still haven't mastered all the intricacies of the software. My biggest regret so far is that I should have worked on my English when I was a student because there are a lot of video tutorials but too bad they are only in English.

Once again, thank you for your advice.

Alain
Il vaut mieux un qui sait que cent qui cherchent.
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