I'm looking for a way to correct a little error that is occurring in
The movielink below is a registration of this installation, the error
is visible about 3/4ths into the movie.
Look for : the little bar on top going away, leaving just the big
panorama in the background visible. The scrolling goes smooth except
for a little hickup
on the right side, where one panel of the panorama flashes on top
before going away again.
Below is a part of the patch for this installation. The problem is
this : I move 4 panels left>right or right>left containing part of
the panorama. Once they are offscreen, they are moved to the other
side to create endless scrolling.
The way these panels move is regulated by the sensor in the rotating
chair. Since this sensor detects a given number of concrete steps in
the rotation, I interpolate the motion of the panels using a little
abstraction I made called 'bounce' (also below).
Now, this 'bounce' abstraction uses the bline object, this all works
well to move the panels normally, but when whey have to move to the
other end after going offscreen, the bline object would move them
from say point -100 to 100, going through every step in between and
thus passing through the projected image. Since this is not desired,
I detect when the pictures x-position is > than a certain nr. and if
so, set the new position to bline "immediately".
I don't know where something exactly goes wrong, whether it is in the
'immediate' setting of the new location or with the detection which
opens the gate to send the location to 'immediate' or not. I just
thought I'd post it.. perhaps someone has an "aaah that's why"-
moment... since all those I had didn't solve it.
I'm afraid that this might all still be a bit vague but I can only
ask and cross my fingers :D
I've sent the patches in a new mail.