i have to convert/distort a 2d Texture to something like that screenshot.
i hope you get the idea.
any formula, links, hlsl-codes, ideas etc. welcome!!
many thanx in advance!
https://vvvv.org/sites/default/files/imagecache/large/images/Spheroidkl.JPG
where did you take that screenshot from? i mean, what exactly is happening, or what do you want to achieve?
a certain kind of projection distortion or just a look-alike spherical distortion?
Does this have anything to do with spherical mapping?
http://sites.google.com/site/vlibraryapplib/Home/tutorials/sphere-mapping
https://vvvv.org/sites/default/files/imagecache/large/images/Sphere.png
Have you tried just making a sphere and plugging your texture into it? Does this not achieve what you are trying to do?
Ah ok,of course i have to be much more precise:
currently i play around with a http://www.pufferfishdisplays.co.uk/products/puffersphere-xxl/ , d= 4 meters :)
the projector is mounted horizontal and the main spectators POV is on the opposite side.
so i tried some reverse engineering using Projector (EX9):
the result comes quite close to that what i need but it doesn’t fit exactly.
reason for that may be that the Barco Projector is used with its own lens and in ~ 40cm distance within the puffersphere is another really evil extreme wideangle lens…
pls see attached patch
https://vvvv.org/sites/default/files/imagecache/large/images/DSCN0120.png
see lower right corner: that’s the display of my laptop; 4m are really large…
Projector (EX9) help.v4p (16.7 kB)