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Concentric circles followup — need expression to position logo in center
This is what I have so far:
I have arranged 24 frames around each circle using position and rotation expressions.
I have 10 of these circles with the radius increasing by a variable of 200 with
each circle, i.e. the first circle has a radius of 600, the 2nd circle has a radius
of 800, the third circle has a radius of 1000, etc until the 10th circle which has
a radius of 2400.This is what I need:
I need to center a 3d logo (made with invigorator) at the center of these circles.
I imagine that the radius for this logo could be 400. What expression could I use
for the logo such that no matter how I move the camera around the circles, the logo
stays in the center of the whole thing? -
1 Reply
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[Shaun] ”
I need to center a 3d logo (made with invigorator) at the center of these circles.
I imagine that the radius for this logo could be 400. What expression could I use
for the logo such that no matter how I move the camera around the circles, the logo
stays in the center of the whole thing?”Do it the other way around: Tie your circles to the logo.
center=thisComp.layer(“Logo”).position; //position of the logo
radius=200; //one circle
angle=degreesToRadians(360/24); //circle segmentsX=center[0]+Math.sin(angle*index)*radius;
Y=0;
Z=center[2]+Math.cos(angle*index)*radius;[X,Y,Z]
I don’t use Invigorator, but I know that it can be made to use a reference object, so your “Logo” in the above code should be this treference object. To permanently orient it towards camera, use eitehr auto-orinet or this code on the orientation property:
lookAt(position,thisComp.layer(“Camera”).position)
Mylenium
[Pour Myl
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