QTVR FOV x (PAN & TILT)

[Mam�o - Toolshed]

I developing a CD-ROM that has an image archive that will contain pictures that can be zoomed
Thwy are very big (arround 2000x2000)pixels, so we choosed to implement it using QTVR panorama
with Warpmode set to #none.

It works fine standalone.

The next step in development is showing a thumbnail of the image with the zoom-square marked on it.
This is the part where I am facing problems - the relations beetween FOV and MAX/MIN PAN makes no
sense, it seems that there is a non-linear relation beetween those.

The panorama has a 0.81 pixel aspect and its being displayed as a 4:3 aspect(1.333) sprite (this is one of the examples)

if I zoomout at maximun I get a (sprite n).fieldofview equals to something arround 67!?!?!
why not 100 degrees that is the 'node sweep' of my QTVR movie??

ok then, but where this number comes from??

I need to make a relation beetween the s.FieldOfView property and the percentage of the image that is displayed.
after that I need to get the max/min pan for each FOV value... sounds dificult

even if I get to do that, i will still need to do that for the TILT property too


Am I in a mess?? ehhe

I wonder if should I move back to a big bitmap + mask - but that runs very bad on older machines (K6-III-500Mhz wich is our standard bad-machine)



please, any help would be very appreciated (it is due dec 20th) and its only one part of the CD.

Luiz Gustavo Castelan P�voas


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