BIG Problems, simple solution

    While it seemed my equation was working properly, when I increased the size of the matrix so that I could manipulate a longer image appropriate for wrapping around a cylinder, suddenly things were wrong.  The image looked awful and blocky and the image was off center.  I will admit my equation was not quite right, but I had fixed it, realizing that and yet it still was not working.  What could be wrong?!

    After wasting MANNNNNY hours trying all sorts of things and many new equations, I finally figured it out.  I never specified the dimensions for jit.qt.movie and it was defaulting to 320x240.  Using an 840x240 image (a small version for testing purposes), and a matrix with the same dimensions, all the math was coming out wrong, since the equation calls the x dimension as a constant.  BIG problem, simple solution.  I typed in the dimensions for jit.qt.movie and it was all sorted out.  My result is here for viewing. 

Computing Success, Physical Dilemmas

 A conversation with a physics major has brought about a new equation, similar to the others I had tried, but different enough, as the results to the left show.  This seems to be working generally.  I have this patch functioning as a subpatch inside a patch rendering a 3D cylinder with this as a texture.  I am still trying to determine how to delete half of the cylinder so that this matrix only stretches over a semicircular surface, rather than all the way around the cylinder. Once that is completed I will set up the motion tracking to determine how this texture will change with the viewer's position and angle.

    I  want to start constructing the frame for the projection material as soon as possible.  I will need to take some  measurements at the installation site.  In my discussion with a professor from the sculpture department, I was encouraged to consider using rear projection.  The amount of  space and shape of the room will determine if that will be possible.  If frontal projection is the only option, the projection surface will be made with wooden panels instead of cloth, as I was advised is the easiest method.  I was also encouraged to think about how to produce a total immersion, and to consider more projections and the configuration of the installation.  I must somehow balance efficiency and ease with the experiential success of the installation.  I believe my measurements will give me some answers as to the bounds of efficiency and I could then better weigh these concerns.

Spatial Mapping is Not My Friend

I had held out from posting, hoping that at any moment (over the last week), I would have the solution to the problem of the expression needed for the spatial map I am trying to create.  But that moment has not come, though I feel as if I've tried almost everything.  Above is my patch as is.  As you can see, it doesn't work.  The image should look increasingly stretched as you move from the center in either direction, while the center should correspond exactly to the center of the original picture.  I'm quite exhausted at this point and it is getting old spending every free moment I have trying to solve the problem.