Fx-director slide projector flicker problem

[niravmadhvani]

I'm not able to prevent the fx-director slide projection to randomly flip within an animation of the spot-light position. Also when the angle to the lighted object comes near 90 degree, the slide projection becomes irritated (like if only one pixel is beamed)

http://threesixo.com/projekte/projector\_mi...tor/a/index.htm

Here is a link to a site with a small streaming video for MediaPlayer or QT5.0 of the problem.

I've also put there the SI-scene (54 Kb).

Any suggestion is very appreciated.
Thanks,

fhassani@threesixo.com

[atyss]

Salut Frank,

I downloaded your database and found the problem. What you experienced is a common transformation problem that affects only rotations, most of the time.

The image's flipping is caused by the position of your spot. Since your spot is placed right on a global axe (0 unit), the renderer is not sure in which orientation to put the image, so he changes its mind everyframe.

The solution is to put your projector just a slight unit up of 0 in all axes. For example, your spot is at 0 on Y axis. Put it on 0.001 (it worked on my machine). And do not make your spot cross the global center (0,0,0). A good idea would be to put the whole scene far from the global center.

I created a small scene of my own to test this. I can send it to you if you wish.

Hope this helps
Bernard Lebel