Most of my spherical panoramas are of cityscapes and townscapes, usually taken at eye level from the street. This very often gives a result where most of the subject interest is in the top half of the image, i.e. above the horizon, with the lower half occupied by uninteresting foreground matter. For an example please see (a) in the illustration, below, where the dotted line represents eye level, which with a tilt value of zero will be centred vertically within the panorama's window.
I realise that I can tilt the panorama to lower the horizon, but this of course results in all vertical lines converging towards the top of the image, as in (b) below. Not an attractive proposition for architectural subjects.
I can sort of overcome the problem by making the panorama window deeper than I require, and masking off the unwanted foreground in the HTML page by placing a box over the lower part of the panorama window, as in (c), below, where the grey dotted line indicates the masked area of the window and the red dotted line the box which is obscuring it. While this strategy works, it does not seem very elegant, and I am concerned about how robust it is regarding browser compatibility.
A possible solution might be for Pano2VR to include, perhaps within the 'Display' pane of the settings screen, an option to vertically offset the panorama within its window. Obviously this would result in the panorama visibly rotating around a point other than the centre of the window when it is tilted to show the zenith or nadir, but I don't see that as a huge issue.
Might this be possible, Thomas, or can you or anyone else suggest an alternative, please?
Regards to all
Andrew
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