Problem with nulls from 3D camera track

[Walter Soyka]

You will probably benefit from Dan Ebberts’s expression to orient a layer to the camera plane. Alt-click the stopwatch for a layer’s orientation property and paste in the following:

L = thisComp.layer("Camera 1");
u = fromWorldVec(L.toWorldVec([1,0,0]));
v = fromWorldVec(L.toWorldVec([0,1,0]));
w = normalize(fromWorldVec(L.toWorldVec([0,0,1])));

sinb = clamp(w[0],-1,1);
b = Math.asin(sinb);
cosb = Math.cos(b);
if (Math.abs(cosb) > .0005){
c = -Math.atan2(v[0],u[0]);
a = -Math.atan2(w[1],w[2]);
}else{
a = (sinb < 0 ? -1 : 1)*Math.atan2(u[1],v[1]);
c = 0;
}
[radiansToDegrees(a),radiansToDegrees(b),radiansToDegrees(c)]

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
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[Adam Lewen]

Thanks Walter
Unfortunately the script gave me a similar result to what I had. But I did manage to fine a solution that I was happy with.
Analyzing again and changing the 3D track camera to a fixed and specifying my own angle of view (a really wide one worked great :-0 not sure why, I will test to see more results)

But this way I managed to have the colored planes moving with me in a nice manner!

Thanks for replying and I will save this script for future tasks!

Adam