janzen@ant.dec.com (Tom LMO2/O23 296-5421) (05/03/88)
We are getting a little distracted by this talk of stereoscopy; nevertheless, I reply to the note that perhaps warned me that I was looking at the images in reverse relationship by crossing my eyes. I don't cross my eyes. I un-cross them, as my note said. I trick my eyes to triangulate as though looking off in the distance, but focus a couple feet away. Therefore, the directions the eyes look are almost parallel. In fact, the early version of my little program was rotating the object in the wrong direction. This was hard to notice in a wire-frame drawing of sine oscillations in each axis until I added pin-hole camera geometry perspective to project the image on the screen; then it was clear I had to fix the rotation. In short, I use my eyes without a viewer to establish exactly the same result as a less talented person with a viewer. Tom Janzen Digital Equipment Corp 111 Locke Marlboro 01752. (. ) ( .)