all dinamically by expressions

[Mike Clasby]

If you keyframe the movement of the airplane, then pickwhip the beam endpoint to the anchor point of the airplane (this adds an expression) you should be fine. Unless I’m not understanding what you want to do.

If the airplane is off just a little bit, adjust the airplane’s anchorpoint to be in the center of the airplane, by double clicking the layer then moving the anchor point in the layer window that opens up.

[Serfior]

i think you dont. the only thing that i want to edit it that two null layers. these null layers set beams and “plane” starting and ening point. i already do the beam effect with de pickwhip but i dont know how to animate the plane with expressions with the coordinates of the null layers. i dont want to keyframe the movement of the plane. i want it to be with expressions.

[Mylenium]

Try this:

beam_start=thisComp.layer(“Beam”).effect(“Beam”)(“Starting Point”);
beam_end=thisComp.layer(“Beam”).effect(“Beam”)(“Ending Point”);
beam_length=end=thisComp.layer(“Beam”).effect(“Beam”)(“Length”);

X=linear(beam_length,0,100,beam_start[0],beam_end[0]);
Y=linear(beam_length,0,100,beam_start[1],beam_end[1]);

[X,Y]

Mylenium

[Pour Myl

[Serfior]

it works perfect!
is there any way to auto rotate that graphics having these to points? like “Rotating a layer along a motion path”…

thanks again 😉

[Mylenium]

That’ easy. I suggest you go to

https://voir.mylenium.de/creation/tutes/ae_tut_world.html

All you need to know is explained in this tutorial (including an alternative to the Beam effect).

Mylenium

[Pour Myl