-
Keeping 3D layer square with camera
I need a 3D layer to always be absolutely square to the camera. “Orient to Camera” still twists and rotates the layer as it approaches the edge of the comp.
Any ideas how to do this? (I vaguely feel like I’ve asked this before)
Here’s what I’m talking about:
-
2 Replies
-
I think this orientation expression does what you want:
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)]
Dan
-
Amazing, per usual, Dan! Thank you!
Reply to this Discussion! Login or Sign Up