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.