Hi alex, I am not sure what you're trying to do, but I am eager to help you... do you want to project the video onto a wall/ceiling hemisphere inside a real room? or are you talking about virtual projections? I guess what you have to do first is distort the circled video back into a square and then use that to texture the sphere. marius.
sphere with a ? is it just the mapping on the spherefor any distortion you Alex wrote: > Maybe a different subject will inspire some help? > > basically, I have video that was shot on a mirrored spherical ball.. > this gives a circular image inside a rectangular video, I've figured > out how to crop it so that I just get the square that surrounds the > circle, but I cannot figure out how to correctly map this texture onto > a sphere so that it is only on one hemisphere and so that the circle's > circumference is on a "great circle" of the sphere? [ie it the circle > is warped out so that it becomes a hemisphere]. > > I figure maybe I have to do some GEMgl stuff for this? > > if anyone has done this, would you please share? > > If not, any advice? > > Thanks, > -Alex > > > On 10/10/07, Alex <[EMAIL PROTECTED]> wrote: >> I have some panoramic video that I want to use to texture a hemisphere >> [or rather, the bottom half of a sphere]. >> >> I cannot simply texture the sphere with the video because the warping >> is not correct.. it seems that I need some sort of non-rectangular >> warping of the image before I texture the object, or a non-rectangular >> mapping of the texture onto the sphere. >> >> Any ideas or advice? Does anyone else have experience working with >> panoramic video in Gem? >> >> -Alex >> > > _______________________________________________ > PD-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > _______________________________________________ PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list